It can be argued that sire selection is the single most important element of a successful breeding program. Of course, it goes without saying that you must first have established the breeding objectives for your herd. This is where the two national genetic selection indexes, LPI and Pro$, have a critical role to play. Canadian Dairy Network (CDN) and each breed association provides lists of top animals... proven sires, genomic young bulls, cows and heifers, ranked based on their LPI and Pro$. These indexes have been developed and implemented to guide Canadian producers in terms of setting their breeding goals and then realizing them.. Optimum Sire Selection Strategy. The ideal strategy for producers to achieve their breeding objectives is first to rank sires based on your preferred selection index. Once the highest sires for that index are identified, then the second step is to determine how to best incorporate them in your herd by avoiding matings that result in too much inbreeding and/or a ...
The Indonesia Cattle Breeding Program (ICB), which commenced in February 2016, is a program established under the auspices of the Indonesia-Australia Partnership on Food Security in the Red Meat and Cattle Sector (the Partnership), with the purpose of promoting sustainable commercial scale beef cattle breeding in Indonesia. The project aims to pilot a range of different breeding models with private sector partners to assess commercially sustainable approaches that can be up-scaled to facilitate investment, innovation and expansion of the beef cattle breeding industry in Indonesia.
The Indonesia Cattle Breeding Program (ICB), which commenced in February 2016, is a program established under the auspices of the Indonesia-Australia Partnership on Food Security in the Red Meat and Cattle Sector (the Partnership), with the purpose of promoting sustainable commercial scale beef cattle breeding in Indonesia. The project aims to pilot a range of different breeding models with private sector partners to assess commercially sustainable approaches that can be up-scaled to facilitate investment, innovation and expansion of the beef cattle breeding industry in Indonesia.
The majority of beef breed associations have made (or are currently making) substantial changes to their National Cattle Evaluation. These changes ultimately benefit commercial bull buyers by providing improved
Shirali M., Miraei‐Ashtiani S.R., Pakdel A., Haley C., Navarro P. and Pong‐Wong R, 2015, A Comparison of the Sensitivity of the BayesC and Genomic Best Linear Unbiased Prediction (GBLUP) Methods of Estimating Genomic Breeding Values under Different Quantitative Trait Locus (QTL) Model Assumptions, Iranian Journal of Applied Animal Science, 5(1), 41-46 Shirali M., Miraei‐Ashtiani S.R., Pakdel A., Haley C., Navarro P. and Pong‐Wong R, 2015, A Comparison of the Sensitivity of the BayesC and Genomic Best Linear Unbiased Prediction (GBLUP) Methods of Estimating Genomic Breeding Values under Different Quantitative Trait Locus (QTL) Model Assumptions, Iranian Journal of Applied Animal Science, 5(1), 41-46
Animal breeding is a branch of animal science that addresses the evaluation (using best linear unbiased prediction and other methods) of the genetic value (estimated breeding value, EBV) of livestock. Selecting for breeding animals with superior EBV in growth rate, egg, meat, milk, or wool production, or with other desirable traits has revolutionized livestock production throughout the world. The scientific theory of animal breeding incorporates population genetics, quantitative genetics, statistics, and recently molecular genomics and is based on the pioneering work of Sewall Wright, Jay Lush, and Charles Henderson. Breeding stock is a group of animals used for the purpose of planned breeding. When individuals are looking to breed animals, they look for certain valuable traits in purebred animals, or may intend to use some type of crossbreeding to produce a new type of stock with different, and presumably superior abilities in a given area of endeavor. For example, when breeding swine the ...
Due to the absence of accurate pedigree information, it has not been possible to implement genetic evaluations for crossbred cattle in African small-holder systems. Genomic selection techniques that do not rely on pedigree information could, therefore, be a useful alternative. The objective of this study was to examine the feasibility of using genomic selection techniques in a crossbred cattle population using data from Kenya provided by the Dairy Genetics East Africa Project. Genomic estimated breeding values for milk yield were estimated using 2 prediction methods, GBLUP and BayesC, and accuracies were calculated as the correlation between yield deviations and genomic breeding values included in the estimation process, mimicking the situation for young bulls. The accuracy of evaluation ranged from 0.28 to 0.41, depending on the validation population and prediction method used. No significant differences were found in accuracy between the 2 prediction methods. The results suggest that there is ...
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Advances in Animal Breeding ISSN 9371-4726 Vol. 1 (3), pp. 024-028, July, 2017. © International Scholars Journals. Full Length Research Paper. Phenotypic and genetic trend lines of milk yield and the breeding values of the cows. *Pervez Benazir, Nusrat Ali Zardari and Malala Afridi. Department Livestock Production, University of Veterinary and Animal Sciences, Lahore, Pakistan.. E-mail: [email protected] Accepted 20 June, 2017. Abstract. A total of 937 pedigree, breeding and performance records of 567 Friesian cows at the Livestock Experiment Station Bhunikey Dist. Kasur (Pakistan) spanning the years 1982-2001 were analyzed using Best Linear Unbiased Predictions procedure. Individual animal models were fitted to total milk yield from all lactations to estimate breeding values by Restricted Maximum Likelihood methodology. Milk yield and lactation length averaged 3391.66 ± 137.97 kg and 278.40 ± 90.17 days, respectively. The estimated breeding values for milk yield ranged from -354 to 503 ...
Application of New Genetic Technologies to Animal Breeding by Association for the Advancement of Animal Breeding and Genetics published September 2005. The ISBN is 9780643093003. The publisher is CSIRO Publishing. Buy Application of New Genetic Technologies to Animal Breeding from CSIRO PUBLISHING online.
The objective of this study was to estimate genetic parameters for weekly body weight of feed intake of individually fed beef bulls at centralized testing stations in South Africa using random regression models (RRM). The model for cumulative feed intake included the fixed linear regression on third order orthogonal Legendre polynomials of the actual days on test (7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77 and 84 day) for starting age group and contemporary group effects. Random regressions on third order orthogonal Legendre polynomials were included for the additive genetic effect of the animal and the additional random effect of weaning-herd-year (WHY) and on fourth order for the additional random permanent environmental effect of the animal. The model for body weights included the fixed linear regression on fourth order orthogonal Legendre polynomials of the actual days on test for starting age group and contemporary group effects. Random regressions on fourth order orthogonal Legendre ...
Overview press publications with toplists of bulls. The file with breeding values of sire opens when clicking on download. The lists are sorted according to NVI with the exception of the beef merit index. Sire that are not included in the toplists can be found with the function Sire Search.. Information on the publication. For information about the publication, see News. The national toplists contains breeding values based on Dutch/Flemish daughter information. The Interbull toplists contains converted breeding values based on information from abroad. The genomic toplists contains breeding values based on pedigree information combined with genomic information. The combined toplists contains the top 500 bulls on NVI-base from the described list ...
Agreed strategy to influence prevalence of a defined phenotype in a defined population. Breeding programs for specific traits have been established in many countries. They are most commonly restricted to inherited disorders. Disease-specific breeding programs have been instituted for such disorders as hip dysplasia, hereditary eye defects, and a number of other conditions possible to reveal by phenotypic or genotypic screening methods. Their values are indisputable, but they do not account very well for breed variations in prevalence, population structure, and other traits. The goal for planned, organized, and agreed breeding plans is broader than just a few specified genetic disorders.. This presentation will review Swedish experiences to establish breed-specific breeding programs, taking into account not only disease-specific breeding programs but also how to handle other undesired as well as desired traits and how to adapt them to population structure and other differences between various ...
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Introduction. In the scenario of dairy cattle genetic selection, the possibility to improve breeding value estimation is driving the research aimed at replacing the use of cumulative lactation records by test day (TD) measurements. Random regression (RR) models have been widely studied and evaluated for genetic evaluation at national level in many countries. RR models have the advantage of flexibility to account for the environmental and genetic components of the shape of the lactation curve. Currently, 11 countries are using TD records in their genetic evaluation systems for production in dairy cattle. Among them, eight countries use RR models (Interbull, 2008).. The random regression allows to fit sub-models for adjusting the lactation curve, assumes a structure for genetic and environmental variation specific to individual TD yields and variable correlation between TD yields (Schaeffer, 2004). The use of TD records greatly increases the amount of data to be analyzed, thus requiring the ...
Investigations in wheat (Triticum aestivum L. em Thell) using molecular and conventional breeding techniques for abiotic and biotic ...
Genome-wide dense markers have been used to detect genes and estimate relative genetic values. Among many methods, Bayesian techniques have been widely used and shown to be powerful in genome-wide breeding value estimation and association studies. However, computation is known to be intensive under the Bayesian framework, and specifying a prior distribution for each parameter is always required for Bayesian computation. We propose the use of hierarchical likelihood to solve such problems. Using double hierarchical generalized linear models, we analyzed the simulated dataset provided by the QTLMAS 2010 workshop. Marker-specific variances estimated by double hierarchical generalized linear models identified the QTL with large effects for both the quantitative and binary traits. The QTL positions were detected with very high accuracy. For young individuals without phenotypic records, the true and estimated breeding values had Pearson correlation of 0.60 for the quantitative trait and 0.72 for the binary
GENES STILL IN HIDING. Traditional dairy cattle breeding is founded on production information and other phenotype information collected from animals. The greater the volume of genealogical information available, the more accurate the evaluation that can be made of an animals breeding value. Evaluation based on offspring, the progeny test, is an efficient, if slow method of acquiring reliable information on the bull genome. Progeny test information for a young bull is only obtained five years after the onset of semination.. The breeders dream is to be able to study animal genes and decide from them directly which individuals are worth selecting as parents of the future generation. Variations in the genomic loci present in the DNA of chromosomes, known as markers, can be employed in the monitoring of gene inheritance. From the available material on 12 parent bulls and their 493 sons, Nina Schulmans research identified which QTL are connected with particular economically important traits. Twelve ...
Most producers are faced with difficult decisions when choosing bulls that address the contributions of both maternal and carcass traits. Not only is there variation in the attributes of multiple breeds, but variation within a breed is substantial. By combining ultrasound and AI (artificial insemination), a producer can develop a breeding program that optimizes both maternal and carcass traits. Prior to the start of a normal breeding season (or during the first 21-30 days of the breeding season) bulls possessing high maternal traits may be selected and used in an AI system. After this time, natural service bulls, selected for carcass merit, can be used for the remainder of the breeding season. Using ultrasound, the producer may now determine which females are pregnant with AI-sired heifer calves based on the age and sex of the fetus. These females can be managed separately with the knowledge that they are pregnant with heifer calves possessing quality maternal traits that have the potential to ...
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The breeding programs widely used to supplement fisheries and conserve... Circumventing mate choice is likely to have negative consequences for...Wedekind and two co-authors had previously shown that mate choice can ...Currently most breeding programs for small populations focus on prese...Ways to incorporate mate choice into breeding programs include allowin...,Breeding,programs,should,incorporate,mate,choice,biological,biology news articles,biology news today,latest biology news,current biology news,biology newsletters
To help address industry problems, Panthee takes a multifaceted approach - part conventional breeding, part molecular marker-assisted selection (MAS). MAS isnt genetic engineering; its simply a breeding short-cut thats especially helpful when it comes to developing disease-resistant varieties using DNA-based markers.. In conventional breeding methods, scientists would inoculate plants with a disease to see which ones are resistant, but that runs the risk of spreading the disease, Panthee explains. However, with MAS, scientists can look for what are called markers - sequences of nucleotides that make up a segment of DNA - that are near the genes of interest in the genome.. To develop a tomato resistant to tomato mosaic virus, for example, Panthee has identified the molecular marker that is tightly linked with the TMV resistance gene, so as he breeds successive generations of plants, he selects only plants that contain that marker.. "I keep on selecting plants that contain the TMV resistance ...
books.google.comhttps://books.google.com/books/about/More_than_half_a_century_of_pedigree_cat.html?id=gcpJAAAAYAAJ&utm_source=gb-gplus-shareMore than half a century of pedigree cattle breeding in the Netherlands ...
In genomic selection, prediction accuracy is highly driven by the size of animals in the reference population (RP). Combining related populations from different countries and regions or using a related population with large size of RP has been considered to be viable strategies in cattle breeding. The genetic relationship between related populations is important for improving the genomic predictive ability. In this study, we used 122 French bulls as test individuals. The genomic estimated breeding values (GEBVs) evaluated using French RP, America RP and Chinese RP were compared. The results showed that the GEBVs were in higher concordance using French RP and American RP compared with using Chinese population. The persistence analysis, kinship analysis and the principal component analysis (PCA) were performed for 270 French bulls, 270 American bulls and 270 Chinese bulls to interpret the results. All the analyses illustrated that the genetic relationship between French bulls and American bulls ...
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Author: Written by Davis, K. C., M. W. Tess, D. D. Kress, D. E. Doornbos, and D. C. Anderson Journal: Journal of Animal Science, Oct 1994; 72: 2585 - 2590.. Abstract: Data collected during a 10-yr study at the Northern Agricultural Research Center (NARC), Havre, MT were used in construction of a simulation model to evaluate production systems using different breed groups. Five dam breed groups, straightbred Hereford (HH), 50% Angus-50% Hereford (AH), 25% Simmental-75% Hereford (1S3H), 50% Simmental-50% Hereford (1S1H), and 75% Simmental-25% Hereford (3S1H), were studied. The simulated system was a northern range cow-calf production system with spring calving and fall weaning. Replacement heifers were purchased and all calves were marketed at weaning. All nonpregnant females were sold in the fall. Statistical analyses of the data yielded input values (least squares means for breed group x age x sex subclasses) for cow and calf weights, pregnancy rate, dystocia, and calf survival. Pregnancy, ...
An intermediate approach between the two extremes discussed above can be obtained by using multivariate models where marker effects are allowed to be different but correlated across subpopulations. This approach has been considered in animal breeding applications involving multibreed analysis where it did not lead to a consistent improvement of prediction performance (Karoui et al. 2012; Olson et al. 2012; Makgahlela et al. 2013). However, less effort has been made to investigate the impact of population structure on estimation of marker effects in the context of genome-based prediction in plant breeding. While in animal breeding large clearly separated breeds exist, in plant breeding population structure can have very different forms and origins, including combined analysis of data from multiple, connected, breeding programs, diversity panels, and differently structured mating designs that lead to various forms of multiparental populations.. For genome-based prediction in multiple biparental ...
An intermediate approach between the two extremes discussed above can be obtained by using multivariate models where marker effects are allowed to be different but correlated across subpopulations. This approach has been considered in animal breeding applications involving multibreed analysis where it did not lead to a consistent improvement of prediction performance (Karoui et al. 2012; Olson et al. 2012; Makgahlela et al. 2013). However, less effort has been made to investigate the impact of population structure on estimation of marker effects in the context of genome-based prediction in plant breeding. While in animal breeding large clearly separated breeds exist, in plant breeding population structure can have very different forms and origins, including combined analysis of data from multiple, connected, breeding programs, diversity panels, and differently structured mating designs that lead to various forms of multiparental populations.. For genome-based prediction in multiple biparental ...
Genomic prediction of breeding values when modeling genotype × environment interaction using pedigree and dense molecular markers. 2012. Burgueño, J.; Campos, G. de los; Weigel, K.; Crossa, J.. Crop Science 52 (2): 707-719. DOI: 10.2135/cropsci2011.06. ...
Artificial selection is a process of selective breeding that has been used by humans for thousands of years. It is the earliest form of biotechnology, where plants or animals with specific traits were selected to breed so that their desired traits could be duplicated. Over the years, selective breeding has done everything from create larger fruits to horse breeds that have specific gaits.. The advantage of selective breeding is that it uses the processes of natural selection, but under direct supervision from carefully selected animals or plants with the desired traits. There are no genetic modifications or other forms of tampering that could potentially harm people and the risk to the plant or animal is often very minimal at the same time.. The disadvantage of selective breeding is that it can take a long time for the process to work. In horse breeding, for example, the given standard to establish a new breed is to have offspring with the desired traits to be produced over the course of 7 ...
REGINA - Breed associations have been around for more than a century but today their roles are changing. Wade Shafer, executive vice-president of
Due to man-made time constraints with breed registries, many breeders want to speed up the onset of the breeding season to have foals born as close to January 1 as possible. So how do we match up the natural breeding season with the man-made operational breeding season?
Genomic selection is a new form of marker-assisted selection, which has primarily been used by large companies … but thats changing. As the technology becomes more affordable, mid-size companies are also starting to see its value.. Recently, the cost of DNA sequencing has dropped drastically giving more plant breeders access to more marker panels and platforms to cost-effectively genotype a large number of samples. These improved breeding platforms allow for new varieties to be brought to market faster and cheaper. Two such platforms are array-based genotyping and genotyping by sequencing.. Traditionally, many selections in breeding programs were made based on plant phenotypic evaluation or taking the result of a few trait-linked markers into account for quality, disease and pest resistance.. With the new technologies being used, genomic selection allows breeders to simultaneously consider the effect of all the markers in the genome to calculate the Genomic Estimated Breeding Value (GEBV), ...
Additional file 1, Table S1 shows the posterior means (standard deviations) of direct and maternal heritabilities of GL and liabilities to CD and SB for each model. Posterior distributions of direct and maternal heritabilities for the three calving traits were similar across categories of GL and between models (RMM1, RMM2 and RMM3) and were also similar to their counterparts from the SMM. The posterior mean of direct heritability of GL was higher than that for maternal heritability (0.39 vs. 0.08-0.07); corresponding estimates for CD (0.08-0.10 vs. 0.07-0.08) and SB (0.05-0.08 vs. 0.08-0.11) were smaller than those for direct heritability and similar between them. Heritability estimates were within the range of values reported in previous studies [15-17]; estimates for CD and SB were higher than those used in routine genetic evaluations of CD and SB in US Holsteins, except for the direct heritability of CD [18, 19].. Features of the posterior distributions of genetic correlations in the four ...
SPECIAL REPORT / New plant breeding techniques focus on developing new seed traits within a given species through genetic engineering. A troubling question for policymakers is whether these techniques should fall under GMO legislation.
Read "Mind the gap: analysis of marker-assisted breeding strategies for inbred mouse strains, Mammalian Genome" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
The genetic evaluation of some economic traits by nature is applied for the categorical data following the discrete distribution such as calving difficulty. Janss and Foulley (1993) used a Bayesian method for bivariate genetic evaluation of both continuous and discrete natures. Wang et al. (1997) implemented a fully Bayesian analysis via Gibbs sampling to infer the genetic merit and the genetic parameters in a joint analysis of calving ease and birth weight. Abdallah and McDaniel (2000) reported that the heritability estimate of days open was 0.03. In this study, the genetic parameters of heritabilities, genetic and phenotypic correlations were estimated using the bivariate threshold animal model via Gibbs sampling for both discrete and continuous natures of calving difficulty and days open.. ...
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The average effect of social programs on outcomes such as earnings is a parameter of primary interest in econometric evaluations studies. New results on using exclusion restrictions to identify and estimate average treatment effects are presented. Identification is achieved given a minimum of parametric assumptions, initially without reference to a latent index framework. Most econometric analyses of evaluation models motivate identifying assumptions using models of individual behavior. Our technical conditions do not fit easily into a conventional discrete choice framework, rather they fit into a framework where the source of identifying information is institutional knowledge regarding program administration. This framework also suggests an attractive experimental design for research using human subjects, in which eligible participants need not be denied treatment. We present a simple instrumental variables estimator for the average effect of treatment on program participants, and show that the ...
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Genetic correlations between functional herd life and conformation traits are presented in Table 3. Correlations between functional herd life and body structure traits were variable. In general, body structure traits had a low to moderate negative correlation with functional herd life (-0.04 to -0.27), except for stature, where the genetic correlation was positive (0.15). Samoré et al. (2010), in a study on Italian Brown Swiss, also found low to moderate negative genetic correlations between body structure traits and functional herd life (-0.07 to -0.22). However, only body depth, dairy strength, rump angle, thurl width and rear leg side view were significantly correlated with functional herd life in the current study. The small genetic correlation between rear leg side view and functional herd life observed in the current study is consistent with the results by Vollema & Groen (1997), who reported a negative genetic correlation between rear leg side view and functional herd life (-0.17). ...
Forty-two native, new and foreign breeds were analyzed for 18 traits. Principal component (PC) analysis showed that the first three PCs accounted for 82.6% of the total variation. The first PC is a Size and Weight Factor (SWF) and accounts for 50.5% of the total variation. The second PC is a Skin and Bone Factor (SBF) and accounts for 20.8% of the variation. The third PC is a Reproduction and Fat Factor (RFF) and accounts for 11.3% of the total variation. Non-lean meat carcass traits (skin, bone and fat) are associated with reproductive performance. Plotting SBF against SWF is useful in grouping of breed groups. This grouping is in agreement with that obtained by cluster analysis. Breeds from the same geographical area tend to be in the same performance group, suggesting genetic connections in the past. Cluster analysis indicated six genetic types. New breeds showed the shortest genetic distance to the foreign contributor breeds ...
This topic outlines the importance of growth, fat and muscle to lamb profitability and in meeting carcase specifications for target markets. Variation between breeds and crossbreeding types is illustrated. The concept of heritability and genetic variation for growth and carcase traits is introduced. Genetic evaluation of animals and the national program (LAMBPLAN) are outlined together with the concept of estimated breeding values (EBVs) and indexes for evaluating the genetic merit of animals. Research results are presented that show EBVs really do work with high EBV rams producing on average higher performing progeny. The use of EBVs to select appropriate rams to produce lambs for which a high proportion will meet varying target market carcase specifications is illustrated. While the focus is on selection of the best ram it is important to remember that the sire only contributes half the genes to the lamb for growth and carcase traits and the dam contributes the other half. The genetic merit of ...
This study focuses on the value of the genetic lag associated with maintaining sows for additional parities in a commercial swine herd. Three traits were included in this study: number born alive (NBA), 21 day litter weight (W21), and days to market (D250). The economic values assigned to these traits were $22.00/pig, $0.70/lb., and $0.17/day, respectively. The genetic improvement per generation made for each trait was assumed to be 0.3 pigs, 3.0 lbs., and 3.0 days, respectively. It was estimated that the value of the genetic lag associated with retaining a sow to P3, P5, and P7 was $24.80, $46.89, and $73.97 in a herd whose seedstock supplier has a generation interval of 1.5 years. This minimal loss does not justify the costs of developing a gilt and decreased P1 production. Therefore, sows should remain in the breeding herd until culling for non-voluntary reasons or inferior production becomes necessary.
The project aims to develop a novel strategy to improve longevity and maternal traits in a pig breeding program. We will evaluate the use of genetic markers on crossbred animals to strength pig breeding. A method called genomic selection (GS) will be used, which utilizes DNA-markers for the genetic …. Läs mer ...
Citation: Wiggans, G.R., Wright, J.R., Muenzenberger, C.J., Neitzel, R.R. 2012. Genetic evaluation of mobility for Brown Swiss dairy cattle. Journal of Dairy Science. 95(Suppl. 2):267(abstr. T43). 2012. Interpretive Summary: Technical Abstract: Genetic parameters were estimated for mobility score and 16 current linear type traits for Brown Swiss dairy cattle. Mobility is defined as a composite trait measuring the cows ability to move as well as the structure of her feet, pasterns, and legs. Scores from 50-99 were assigned by appraisers for the Brown Swiss Cattle Breeders Association beginning in June 2007. Only scores made before 69 mo of age were used. After edits, 32,710 records were available for 19,472 cows in 819 herds. The model included fixed effects for the interaction of herd and appraisal date (2109 groups); appraisal age within parity (46 groups); lactation stage within parity (21 groups), as well as random effects for animal, permanent environment and residual error. A multitrait ...
On the other hand SSR technology, includes systems such as Cre/loxP and Flp/FRT used to carry out deletions, insertions, translocations and inversions at high efficiency at specific sites in the DNA of cells and organisms which can, among others, cause knockdown or knock-in genes in the genome of eukaryotes, depending on the orientation of the specific sites (loxP, FLP, etc.) which flank the targeted site. Genome and gene editing techniques offer many option in improving crop, these techniques can change from a specific single nucleotide to a full allele or by inserting a specific sequence (a gene for example) in a specific region or place in the vast genome of an organism. The precision which these techniques offer is what will eventually make them the method of choice for the scientific community in understanding molecular mechanisms and also for the breeding community for the improvement of new varieties over conventional breeding or genetic engineering methods. This technology shows enhanced ...
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Because who wouldnt want to send a potato flying into space? Youve just landed on the worlds largest Spud Cannon Database with a creative community unlike any other. You can learn how to build yourself a potato cannon, share ideas, and ask questions. Post on the forums or in the chat! Modifying Airsoft and pellet rifles, or maybe even your old Nerf gun? You bet weve got that too. So read up, check out all the pictures, and be sure to register and show us what you got!
Animal breeding and Genetics. Instructor: Dr. Jihad Abdallah Lecture 1 Cells and chromosomes. Animal Cell. Cell Boundaries. Plasma Membrane: An outer covering that defines the cell boundary Slideshow 4615227 by ronni
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As all Center components will use genetically engineered mice, a central Animal Breeding Core (AB Core) will be used to meet the animal needs of all Center proj...
Working in the cannabis industry in Colorado is extremely competitive and rapidly changing. With new advancements and opportunities at every corner, we have to prioritize efficiency in our breeding program to keep up with a growing market. Conventional breeding methods take a lot of time, labor, and off-site lab testing that slows down our breeding process and costs a lot of money! Working with the Medicinal Genomics team and their youPCR system has given us the opportunity to collect imperative data about our plants in a short amount of time. With the ability to accurately detect plant gender and CBD presence from our seedlings, our selection process has become much easier. YouPCR is easy to use, and our results have been 100% accurate. We would highly recommend getting in touch with the Medicinal Genomics team and seeing what they can do for your garden ...
The key factor to progress in plant breeding is the number of genotypes that can be evaluated phenotypically (Cooper et al. 2014b). Unfortunately, field testing is slow and costly, forcing breeders to limit the number of genotypes that is phenotyped. Genomic prediction offers the potential to alleviate this limitation, allowing to broaden the pool of genotypes for selection, and thereby increasing selection intensity (Crossa et al. 2013; Windhausen et al. 2012) and efficiency of breeding programs (Heffner et al. 2010; Crossa et al. 2013; Windhausen et al. 2012; Hickey et al. 2014; Longin et al. 2015).. In genomic selection, genome-enabled genotypic or breeding values are calculated from genomic prediction models as sums of effects for large numbers of markers, often without explicitly testing individual marker-trait associations (Meuwissen et al. 2001). Genomic prediction models are developed for a target population of genotypes (TPG). The TPG describes the full collection of existing and future ...
The research programmes embrace modern genomics and are designed to underpin crop improvement programmes for inbreeding and outbreeding species. Methodologies developed are appropriate for a wide range of other species and our work also encompasses red kites, Welsh ponies, meat traceability, sticklebacks, snakes and woodmice.. The group benefits from close engagement with IBERS Public Good Plant Breeding Research Group which provides a test bed for hypothesis testing and integration of new breeding strategies for crop improvement.. ...
Devision of Breeding and Genetics (former name is Department of Breeding) was established in 1980s, which is undertaking the animal breeding and genetic researches. The main goal of this division is to accelerate livestock genetic improvement. Objectives ...
Techniques used in breeding programs meant to yield the perfect dairy cow may soon more accurately predict a persons genetic risk for skin cancer.
AR, Tab 9, Abstract of Offers, at 275; Tab 10, Past Performance Report, at 279; Tab 11, Relevant Experience Report, at 290.. As reflected in the source selection decision, both proposals were assigned a low risk rating under the relevant experience factor, because both offerors or their subcontractors possessed experience that was similar in size, scope, and complexity to the project here. AR, Tab 14, Source Selection Decision, at 311-12. For the past performance factor, the evaluation team assigned SDVEs proposal an outstanding rating, based solely on the evaluation of SDVEs performance. As noted by the agency, the references indicated that "SDVE was an outstanding company" that was, among other things, "extremely conscious of safety issues." The agency noted that the customers were "very happy" with SDVEs performance and that all sources contacted said they would do business with SDVE in the future. AR, Tab 14, Source Selection Decision, at 308. Smiths proposal received an above average ...
Primary objective of any plant breeding programme is selection of the best genotype from an array of breeding lines (genotypes). Conventionally, selection involves various traits that are expressed in plants (phenotypes) and the selection tools employed by the breeders involve qualitative (visual or perceivable traits) and/ or biometrical (quantitative) traits. However, since gene expression is always modified by the environment due to several adaptive reasons, selection of traits is not always as successful as it should be. This led to the thinking of selecting directly for the genes themselves, as the genes are coded on the DNA molecules that are free of environmental interference. However, selection of genes was not an easy job as it appeared to be, because of their obscure locations on the genome. Hence, this is achieved indirectly by selecting detectable DNA variations in the individual genomes, which are either associated or closely linked to the target genes, as detected by the ...
All bulls purchased after February 1st, 2019 for use as natural service sires in the Show-Me-Select Replacement Heifer Program™ must be DNA tested to have genomic-enhanced EPDs. All bulls used as natural service sires after February 1st, 2020 must have genomic-enhanced EPDs, regardless of when they were purchased. Seedstock producers classifying bulls as Show-Me-Select qualified in sale books must have genomic-enhanced EPDs on those lots ...
From designer coral bacteria to lithium-air batteries, next year could bring a fascinating slew of environmental advancements (and challenges).
We were the first UK native breed society to devise and implement a scheme such as this and its aims are to show the qualities of our ponies in as many different disciplines as possible, thus enhancing our steadily growing reputation for good quality, useful ponies. With a breed of pony that is capable of such a diverse range of disciplines, it is an enormous task to try and establish a means of highlighting the best points of individual ponies with a fair comparison across the disciplines. The elite scheme is ambitious and it is still not perfect, and further changes may be made in the coming years as it continues to evolve. ...
Plant Breeding and Cultivar Development features an optimal balance between classical and modern tools and techniques related to plant breeding. Written...
ANGUS MEANS BUSINESS. The American Angus Association is the nations largest beef breed organization, serving more than 25,000 members across the United States, Canada and several other countries. Its home to an extensive breed registry that grows by nearly 300,000 animals each year. The Association also provides programs and services to farmers, ranchers and others who rely on Angus to produce quality genetics for the beef industry and quality beef for consumers. For more information about Angus cattle and the American Angus Association, visit www.ANGUS.org ...
Here is what Im saying. Your animal science book will say this about this breed and that about that breed. As mentioined above all of the "heritage" breeds have been here for at least 100 years. For various reasons they didnt pass the "sniff test". Im not saying that they dont have a place. Just for what ever reason they got bypassed. Black Angus and "others" got brought up. Angus has a vast selection of genetics. You can have grass fed to supreme feedlot preformance. There is a lot of advantages to the breed like calving vigor etc. Angus has done an awesome job of marketing, or a used car salesman. Other breeds do have advantages. Cross breeding does pay. I talked to a researcher at UNL about heterosis. He said, on your first cross or F1 you get 14# of extra gain at weaning over a straight bred. Now a 3 way cross, is a bigger gain in heterosis. You have to look at your marketing plan. For instance with me I use Hereford on Angus. I get a percentage of red white face calves, say 10%. Now in my ...
As part of the National Greyhound Welfare Strategy, a number of new GRNSW Greyhound Racing Rules relating to breeding and vaccination requirements will commence on 1 July 2015. These Rules are aimed at improving the health and welfare of our breeding females, and to minimise the number of greyhounds bred that may not be suitable for racing. Click here to download a consolidated list of the Rules commencing from 1 July 2015. ...
We regularly monitor the farming industry. Strong reputation in agricultural sector. Full understanding of a particular nature of B2B.
Clothing with society logo can now be ordered direct from the suppliers. You have the choice of having the full logo-with the pony or just the text. Several colours available. More lines will be added as requested ...
This textbook is suitable for self-learning, or for teaching an upper-year university course on derivative-free and blackbox optimization.
Read Genetic Analyses of Wheat and Molecular Marker-Assisted Breeding, Volume 1 Genetics Map and QTL Mapping by Jichun Tian with Rakuten Kobo. The book mainly describes the QTL mappings and efficacy analyses that are associated with wheat productivity, quality, p...
Like all the Landrace strains that are to be found in the north European countries, the British strain is white in color, has the characteristic heavy drooped ear that covers much of the face, is very long, muscular and is known for producing high quality pork. According to a pamplet published by the Landrace Breed Committee of the National Pig Breeders Association, British Landrace have been found to produce less back fat than the other British breeds in tests and have been found to have the most rapid growth in gilts and second most rapid growth in young boars. The same studies found them to be longer and to have the highest percentage of high priced cuts, with 36.5% of the side being ham and rump. The English first imported Landrace from Denmark in 1949 and used them in experimental studies. In 1953, further importations of registered breeding stock were officially made and the breed society was formed. It amalgamated with the National Pig Breeders Association in 1978. Now, in turn, England ...
Recent advances in genetic research have paved the way for more effective identification and screening of genetic diseases in the horse. With these developments come new ethical considerations with respect to breeding practices, testing, and disclosure.
Under the breeding plan conducted by NLBC, many calves are born at Iwate station. Tokachi Station has the role of bringing up candidate bulls. We gather male calves (about 7-8 months old) from Iwate station, and bring them up until we get their progeny test results. During the waiting period, we collect their semen, make frozen semen, and store them. Proven Sires are selected out of them according to their progeny test results. Now there are about 100 heads of bulls in this station ...
In this instructable Im going to teach you how to build the original hairspray powered potato cannon. Sometims it is also called a potato gun. Making this cannon...
Water Cannon News. Find breaking news, commentary, and archival information about Water Cannon From The tribunedigital-sunsentinel
NEW YORK - An 18th century cannon was found loaded with gun powder and a cannon ball Friday during a routine cleaning at the Central Park Conservancy.
The impaired fertility problem affected mainly gilts and first parity sows; however, older sows had a higher farrowing rate. Therefore the high parity profile may in the short term have been beneficial to the fertility of the herd.. It is normally stated that oestrus period in the sow lasts 24-60 hours and ovulation occurs. 38-42 hours after the onset of heat. Service should take place up to 12 hours before ovulation. A delay in mating could result in lowered embryo survival [13]. Oestrus detection occurred every 24 hours. Therefore, some gilts or sows may have been on the point of ovulation when first detected resulting in conception failure. White [19] suggested checking for signs of oestrus at least every 12 hours.. Gilts that have been moved into a boar pen for service and returned to a group pen can experience increased stress levels sufficient to cause pregnancy failure [18]. In the present case study gilts were returned immediately after service to group pens for a period of three to five ...
The American Hereford Association is second-largest U.S. beef breed associations with more than 7,000 active adult and junior members. The American Hereford Association is a not-for-profit organization.
The American Hereford Association is second-largest U.S. beef breed associations with more than 7,000 active adult and junior members. The American Hereford Association is a not-for-profit organization.
A dog breeding establishment is one where a person carries on at a premises a business of breeding dogs for sale andor a person whose bitch or bitches give birth to five or more litters in any 12-month period. Licences to breed dogs for sale are issued under the Breeding of Dogs Acts 1973 (www.opsi.gov.ukRevisedStatutesActsukpga1973cukpga_19730060_en_1) and 1991 (www.opsi.gov.ukactsacts1991Ukpga_19910064_en_1.htm) and are renewable annually
A dog breeding establishment is one where a person carries on at a premises a business of breeding dogs for sale andor a person whose bitch or bitches give birth to five or more litters in any 12-month period. Licences to breed dogs for sale are issued under the Breeding of Dogs Acts 1973 (www.opsi.gov.ukRevisedStatutesActsukpga1973cukpga_19730060_en_1) and 1991 (www.opsi.gov.ukactsacts1991Ukpga_19910064_en_1.htm) and are renewable annually
You may have always wanted to raise a litter of puppies. However, breeding your dog is a huge undertaking, which should not be done without proper preparation.
Current research in my laboratory has two principal goals, which are 1) identification of single nucleotide polymorphism (SNP) markers having predictive merit for production and meat quality traits in cattle, and 2) annotation of functional aspects of the bovine genome. Data from genetic studies of population of cattle have identified regions of the genome carrying variation among individuals that affects production characteristics. We have been developing DNA markers that accurately track inheritance of this variation, which we hope can be added to genetic improvement programs that would thus be better able to target specific traits for improvement. In addition, we have begun studies of an emerging class of regulatory molecules encoded by the genome called micro- RNAs, short and specific RNA sequences that appear to have the capacity to act as key regulators of growth, development, and tissue homeostasis. Focus for these studies is muscle development, growth, and repair, with some preliminary ...
Riverside Ranch Breeding Station offers a full-service, European approved, breeding facility operating at the highest standards of equine management.
in Proceedings ICAR 2018 (2018). Recent research showed the usefulness of using estimated breeding values (EBV) for mid-infrared (MIR) based biomarkers in genetic improvement. A novel class of biomarkers was defined based on modelling ... [more ▼]. Recent research showed the usefulness of using estimated breeding values (EBV) for mid-infrared (MIR) based biomarkers in genetic improvement. A novel class of biomarkers was defined based on modelling responses of milk composition (e.g., mid-infrared (MIR) based) to stress expressed on continuous scales using reaction norm models. Heat stress is an important aspect of dairy production even in temperate climates as shown in recent studies. Implementation of genomic selection for tolerance to heat stress is therefore not only an issue for Australian dairy cattle, a country that introduced recently such an evaluation. The question remains open if using milk composition based heat stress resilience genomically enhanced EBV (GEBV) is not a viable ...
Breeding Rabbits It s very important for any rabbit owner to be responsible with their rabbits, so generally, responsible breeding should be done under the guide of a responsible, experienced breeder as a mentor. Most likely, if you need this information to help you with deliberate breeding, then you have not done it in a responsible way, which is very important to think about. That said, this information and being aware of these things will likely be of use if your rabbits have a
An independent animal breeding is to be maintained in Switzerland. The Confederation support therefore inland breeding and assist the breeders in their striving to achieve a cost-effective, qualitatively high-standing and environmentally fair production.. ...
Plant & Food Research is internationally renowned for innovation in plant breeding, with traditional breeding approaches being combined with modern genomics techniques to develop better cultivars, faster. Our researchers target new markers, genomics and breeding tools to deliver new cultivars with resistance to pests and diseases, human health attributes and novel fruits, vegetables and grains. With genomic approaches now a key element in plant research and the investigation of bacterial, fungal and insect pathogens, our need for bioinformatics has increased markedly.. In this role youll combine applied research with bioinformatics support and consultancy services to Plant & Food Research scientists and collaborators. This will include the analysis of entire genomes, contributions to scientific programmes and publications, and the development of bioinformatics tools and applications. Current priorities include the analysis of large data sets from Next Generation Sequencing and software ...
The aim of this study was to estimate genetic parameters in the U.K. pedigree Holstein-Friesian (HF) population using an animal model (AM), and to investigate some implications of the results for genetic improvement. In a theoretical study it was shown that little bias in estimating variances components is introduced by grouping herds according to their mean (milk) production, a common practice for investigating heterogeneity of variance in dairy populations. For each of 26 large pedigree herds, comprising a total of 7720 HF cows, variances and h2 for first lactation fat yield were estimated with residual maximum likelihood (REML) using an AM. The mean fat yield was 212 kg. The mean and range of individual herd h2 estimates were 0.38 and 0.03-0.80 respectively, and the average standard error of the h2 estimates was 0.19. Using likelihood ratio (LR) tests it was found that individual herd h2 were not significantly different from each other (P> 0.05), but that phenotypic variances differed ...
Trans Ova Genetics is a beef and dairy genetics company providing assisted reproduction technologies to help livestock breeders achieve their ultimate breeding goals. Now offering reproductive services for small ruminants. Located in Iowa, Missouri, Texas, Maryland, Oklahoma, South Dakota, California, Washington
All of this is in addition to attempting to breed the next world-beater for the show ring!. Healthy, beautiful dogs that are sound in temperament and body are the aim of all dedicated dog breeders. The end result is often a compromise of various factors, including economic ones, but where soundness impacts the dogs quality of life, we must make honest attempts to decrease the incidence of any problems. Breed clubs should incorporate any available testing that can reduce the incidence of disease or improve soundness within the breed.. The more we know of all the factors affecting our breeding stock before breeding a litter, the better equipped we will be to find solutions to potential problems and reduce the number of unsound dogs being produced. This has benefits for all, but particularly for the dogs.. ...
Molecular breeding can complement traditional breeding approaches to achieve genetic gains in a more efficient way. In the present study, genetic mapping was conducted in a sorghum recombinant inbred line (RIL) population developed from Tx436 (a non-stay-green high food quality inbred) × 00MN7645 (a stay-green high yield inbred) and evaluated in eight environments (location and year combination) i ...
Purebred dogs are appealing for their characteristic traits, but the selective breeding process also leads to a variety of inherited diseases.
Background In genomic models that assign an individual variance to each marker, the contribution of one marker to the posterior distribution of the marker variance is only one degree of freedom (df),...
The estimates for the two traits are nearly identical, but the standard error of the second trait is larger because of the missing observation. The Estimate column in the "Solution for Random Effects" table lists the best linear unbiased predictions (BLUPs) of the breeding values of both traits for all three animals. The p-values are missing because the default containment method for computing degrees of freedom results in zero degrees of freedom for the random effects parameter tests. ...
Domestication of Dogs Began about 50,000 years ago 14,000 years ago - artificial selection -Dogs with desired forms of traits were bred Modern breeds are the result
Markers which are listed in your results in parentheses are markers which are considered non-phylogenetic. Basically that means that those markers occur too frequently or change too frequently to be relevant to determining ancestry. These are treated as optional by mthap and do not contribute to scoring.. Markers which are listed in the haplogroup defining markers in parentheses are those marked as optional in the reference chart. This happens when the known sequences are too limited to be completely confident where the marker occurs, or where the marker frequently reverts back to the reference sequence value. These are also considered to be optional and are not scored. ...
Publications Dodds, K. G., McEwan, J. C., Brauning, R., Anderson, R. A., Van Stijn, T. C., Kristjánsson, T., et al. (2015). Construction of relatedness matrices using genotyping-by-sequencing data. BMC Genomics, 16, 1047.. Dodds, K. G., Auvray, B., Newman, S.-A. N., & McEwan, J. C. (2014). Genomic breed prediction in New Zealand sheep. BMC Genetics, 15, 92. Dodds, K. G., Auvray, B., Lee, M., Newman, S.-A. N., & McEwan, J. C. (2014). Genomic selection in New Zealand dual purpose sheep. Proceedings of the 10th World Congress of Genetics Applied to Livestock Production. Dodds, K. G., Tate, M. L., & Sise, J. A. (2005). Genetic evaluation using parentage information from genetic markers. Journal of Animal Science, 83(10), 2271-2279. Dodds, K. G., & McEwan, J. C. (1997). Calculating exact probabilities of allele frequency differences in divergent selection lines. Proceedings of the Association for the Advancement of Animal Breeding and Genetics, 12, 556-560. Dodds, K. G., Tate, M. L., McEwan, J. ...
Our classical plant breeding program involves individually hand-pollinating generations of flowers over time, to develop new and improved varieties of peppers. We carefully select and trial on the basis of flavor, appearance, uniformity, disease resistance, and productivity under a range of growing conditions. Many of our JSS-Bred peppers have gone on to become award-winning grower favorites!