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Brachyspira: A genus of spiral bacteria of the family Brachyspiraceae.Spirochaetales Infections: Infections with bacteria of the order SPIROCHAETALES.Brachyspira hyodysenteriae: A species of anaerobic, spiral bacteria that was formerly classified as Serpulina hyodysenteriae and Treponema hyodysenteriae (and for a short while, Serpula hyodysenteriae). This organism is the agent of swine dysentery.Spirochaetales: An order of slender, flexuous, helically coiled bacteria, with one or more complete turns in the helix.Spirochaetaceae: A family of spiral bacteria of the order SPIROCHAETALES.Gram-Negative Bacterial Infections: Infections caused by bacteria that show up as pink (negative) when treated by the gram-staining method.Swine Diseases: Diseases of domestic swine and of the wild boar of the genus Sus.Dysentery: Acute inflammation of the intestine associated with infectious DIARRHEA of various etiologies, generally acquired by eating contaminated food containing TOXINS, BIOLOGICAL derived from BACTERIA or other microorganisms. Dysentery is characterized initially by watery FECES then by bloody mucoid stools. It is often associated with ABDOMINAL PAIN; FEVER; and DEHYDRATION.Intestinal Diseases: Pathological processes in any segment of the INTESTINE from DUODENUM to RECTUM.Spirochaeta: A genus of flexible, spiral rods found in hydrogen sulfide-containing mud, sewage, and polluted water. None of the species properly referred to in this genus are pathogenic.Swine: Any of various animals that constitute the family Suidae and comprise stout-bodied, short-legged omnivorous mammals with thick skin, usually covered with coarse bristles, a rather long mobile snout, and small tail. Included are the genera Babyrousa, Phacochoerus (wart hogs), and Sus, the latter containing the domestic pig (see SUS SCROFA).Bacterial Shedding: The expelling of bacteria from the body. Important routes include the respiratory tract, genital tract, and intestinal tract.Lawsonia Bacteria: A genus of gram-negative, obligate intracellular bacteria causing a proliferative enteritis in animals, especially pigs, deer, horses, and rabbits.Desulfovibrionaceae Infections: Infections with bacteria of the family Desulfovibrionaceae.Feces: Excrement from the INTESTINES, containing unabsorbed solids, waste products, secretions, and BACTERIA of the DIGESTIVE SYSTEM.RNA, Ribosomal, 16S: Constituent of 30S subunit prokaryotic ribosomes containing 1600 nucleotides and 21 proteins. 16S rRNA is involved in initiation of polypeptide synthesis.Hippurates: Salts and esters of hippuric acid.DNA, Ribosomal: DNA sequences encoding RIBOSOMAL RNA and the segments of DNA separating the individual ribosomal RNA genes, referred to as RIBOSOMAL SPACER DNA.Cecum: The blind sac or outpouching area of the LARGE INTESTINE that is below the entrance of the SMALL INTESTINE. It has a worm-like extension, the vermiform APPENDIX.Saskatchewan: A province of Canada, lying between the provinces of Alberta and Manitoba. Its capital is Regina. It is entirely a plains region with prairie in the south and wooded country with many lakes and swamps in the north. The name was taken from the Saskatchewan River from the Cree name Kisiskatchewani Sipi, meaning rapid-flowing river. (From Webster's New Geographical Dictionary, 1988, p1083 & Room, Brewer's Dictionary of Names, 1992, p486)DNA, Bacterial: Deoxyribonucleic acid that makes up the genetic material of bacteria.Carbadox: An antibacterial agent that has been used in veterinary practice for treating swine dysentery and enteritis and for promoting growth. However, its use has been prohibited in the UK following reports of carcinogenicity and mutagenicity. (From Martindale, The Extra Pharmacopoeia, 30th ed, p125)Colon: The segment of LARGE INTESTINE between the CECUM and the RECTUM. It includes the ASCENDING COLON; the TRANSVERSE COLON; the DESCENDING COLON; and the SIGMOID COLON.Diarrhea: An increased liquidity or decreased consistency of FECES, such as running stool. Fecal consistency is related to the ratio of water-holding capacity of insoluble solids to total water, rather than the amount of water present. Diarrhea is not hyperdefecation or increased fecal weight.Intestines: The section of the alimentary canal from the STOMACH to the ANAL CANAL. It includes the LARGE INTESTINE and SMALL INTESTINE.Phylogeny: The relationships of groups of organisms as reflected by their genetic makeup.Poultry Diseases: Diseases of birds which are raised as a source of meat or eggs for human consumption and are usually found in barnyards, hatcheries, etc. The concept is differentiated from BIRD DISEASES which is for diseases of birds not considered poultry and usually found in zoos, parks, and the wild.