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  • females
  • Patterns of SPP1 mRNA and protein expression in placental and uterine tissues supplying the smallest and a normal-sized foetus from the same uterus were examined in Large White-Landrace (LW-LR), Large White (LW) and Meishan (MS) females 40 and 45 of pregnancy. (bl.uk)
  • In western Hudson Bay, we predict climate warming-induced litter size declines that jeopardize population viability: ∼28% of pregnant females failed to reproduce for energetic reasons during the early 1990s, but 40-73% could fail if spring sea ice break-up occurs 1 month earlier than during the 1990s, and 55-100% if break-up occurs 2 months earlier. (nih.gov)
  • Females are polyestrous and produce two or three litters during the breeding season. (wikipedia.org)
  • About 20% of females from the first litter breed during the summer of birth. (wikipedia.org)
  • genotype
  • There was also a significant difference in genotype distributions of the 16 bp indel between mothers of single-lamb and multi-lamb litters in the studied goat population ( P = 0.001). (frontiersin.org)
  • whereas
  • Mothers of four-pup litters responded stronger and showed no decrease in responsiveness from day 8 to 20, whereas mothers of two-pup litters responded less and decreased responsiveness from day 8 to 20. (biomedsearch.com)
  • protein
  • SPP1 protein levels in normal sized foetuses were significantly higher than in the smallest litter mates for all the tissues. (bl.uk)
  • In both breeds, significant differences between sizes were found in some tissues, with similar expression patterns in respect to size, for both mRNA and protein in endometrial tissues when compared to contemporary LW. (bl.uk)
  • In placenta, the direction of the expression differed between breeds, with a higher expression of mRNA and protein in the normal-sized MS foetuses and in the smallest sized LW foetuses. (bl.uk)
  • The comparison of SPP1 expression between different foetal sizes and different breeds revealed associations between breed, foetal size, and SPP1 protein, factors implicated in PS and LS. (bl.uk)
  • We determined that l -amino acid oxidase, mitochondrial malate dehydrogenase 2, NAD (MDH2), cytosolic 5′-nucleotidase 1B, lysozyme-like protein 4, and calmodulin (CALM) were significantly and abundantly expressed in high-litter size spermatozoa. (pubmedcentralcanada.ca)
  • methods
  • He says one challenge the pork industry faces is the reliance on " inefficient methods to evaluate semen quality that could directly affect litter size. (asbmb.org)
  • consideration
  • The authors' findings suggest that special consideration of the annual distribution of oestrus and litter size is unnecessary for the management of assistance dog breeding colonies similar to those in the UK. (bmj.com)
  • small
  • The mat is soft for your cat's paws, and has small indents to catch and hold litter, plus an outer channel all around the mat to trap any bits of errant litter that may try to escape. (pawshop.co.uk)
  • season
  • There was no evidence of regular seasonal variations in oestrus or litter size by meteorological season or month. (bmj.com)
  • years
  • In order to improve the reproductive performance, it has been intensively selected to increase the litter size for about 10 years. (ajas.info)
  • female
  • In this study, goat KDM6A mRNA expression profiles were determined, insertion/deletion (indel) variants in the gene identified, indel variants effect on KDM6A gene expression assessed, and their association with first-born litter size analyzed in 2326 healthy female Shaanbei white cashmere goats. (frontiersin.org)
  • However
  • However, placenta expression was higher in the normal-sized foetuses compared to the smallest ones. (bl.uk)
  • However, at present there are conflicting data regarding seasonality in oestrus (and litter size) in domestic dogs. (bmj.com)
  • order
  • With the aim of describing some reproductive parameters of the giant otters living in a hydroelectric lake, 56 field excursions to Balbina Hydroelectric Reservoir, hereafter Balbina Lake, were carried out between September 2001 and September 2010 in order to gather information about cub weight and length, litter size and reproductive period of the species in that area. (lajamjournal.org)
  • period
  • The authors also evaluated the relationship between month and litter size for 1609 litters observed during the same period. (bmj.com)
  • The reproductive period and the litter size produced by giant otters in Balbina Lake were within the range reported in literature for non-dammed areas, indicating that these reproductive parameters were not changed by the reservoir. (lajamjournal.org)
  • year
  • Knowledge of seasonality in oestrus and litter size of bitches in assistance dog breeding colonies may support colony management through the efficient allocation throughout the year of resources required for the breeding programme. (bmj.com)
  • available
  • Unlike other cat litter mats that trap litter under carpet fibers, making cleaning difficult and leading to mold and mildew, the PetsN'all Litterbox Mat is easy-to-clean with multiple options not available with other mats. (pawshop.co.uk)
  • Minimum
  • In 2001, the Peruvian authorities introduced a minimum size requirement of 60 cm (24 in) for tollo. (wikipedia.org)
  • study
  • This retrospective study assessed the accuracy of gestational age and litter size predictions in 76 bitches using one of two techniques. (vetcontact.com)
  • difficult
  • More precise data suitable for model validation do not exist, and it is noteworthy in this regard that the predicted litter size changes will be difficult to document if monitoring focuses on X* rather than on X (Fig. 3c,d). (nih.gov)