title: [Genetic nature of atrophic rhinitis in swine. I. The results of a test cross and bacteriological study in atrophic rhinitis in swine].
abstract: It is well established that the swine atrophic rhinitis (AR) is controlled by the only gene with two alleles, R and r, the former being a dominant. Our study was designed to determine the role of these factors in appearance of AR of swine among the offspring. Normal and diseased pairs of animals were mated. The heterozygotic (Rr) phenotypically normal but potentially ill hogs and sows were revealed at the farm where AR was spread. The phenotypically normal hogs and sows (RR, Rr) were mated with diseased (rr) or potentially diseased ones, and phenotypically normal heterozygotic (Rr) hogs and sows (control). The diseased sucking-pigs revealed in the litter were removed. It has been established that the sucking-pigs were normal when mating normal homozygotic animals. These sucking-pigs were used to replace the live-stock of sows. When mating normal homozygotic animals with recessive ones, the sucking-pigs were also normal, the normal alleles being dominant. In matings of heterozygotic animals 27.3% of the litter were wry-snouted. However, even healthy heterozygotic animals should not be used for replacing the live-stock, because they have both the normal and recessive alleles. When recessive animals were mated, all sucking-pigs proved to have the symptoms of AR. Such sucking-pigs, together with their parents were necessarily removed.
mesh_terms: D000818:Animals; D001884:Bordetella / Q000302:isolation & purification; D003433:Crosses, Genetic; D004926:Escherichia coli / Q000302:isolation & purification; D005260:Female; D005808:Genes, Recessive; D005838:Genotype; D008297:Male; D009174:Mycoplasma / Q000302:isolation & purification; D009296:Nasal Cavity / Q000382:microbiology; D009297:Nasal Mucosa / Q000382:microbiology; D010325:Pasteurella / Q000302:isolation & purification; D011550:Pseudomonas aeruginosa / Q000302:isolation & purification; D012222:Rhinitis, Atrophic / Q000235:genetics / Q000382:microbiology / Q000662:veterinary*; D013552:Swine; D013553:Swine Diseases / Q000235:genetics* / Q000382:microbiology; D014244:Trichomonas / Q000302:isolation & purification
vernacular_title: Geneticheskaia priroda atroficheskogo rinita u svineĭ. Soobshchenie I. Rezul'taty analiziruiushchego skreshchivaniia i bakteriologicheskogo issledovaniia pri atroficheskom rinite u svineĭ.