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2018, N 1 (31) |
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VETERINARY SCIENCE AND ANIMAL INDUSTRIES
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Pavlova N., Filippova N., Dodokhov V Kurtanov Kh. |
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Relationship of polymorphism of CSN3, BLGB and PRL genes with milk productivity in simmental cows of the Republic of Sakha (Yakutia) |
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The study revealed a polymorphism of the genes examined. In the studied sample of cows there is a significant prevalence of animals with genotype AB (55,4%) gene CSN3. The frequency of the A allele was 0.652, allele B - 0,348. By gene bLGB found that animals with BB genotype (46.4%) were more common, the frequency of allele B (0.634) prevailed over the frequency of allele A (0.366). With regard to the gene PRL it found that the most common genotype was studied among cows - AA (75%), while the frequency of allele A prevailed over the frequency of allele B is more than four times and amounted to 0.875. In this sample, the cows were found animals with genotype BB PRL gene. The highest milk yield and fat content in milk, possessed animals with genotype BB gene CSN3 (1827,50 ± 100,74; 4,14 ± 0,34), with the AA genotype gene bLGB (1820,36 ± 87,98; 3 99 ± 0,09), with the AA genotype gene Prl (1766,55 ± 39,78). Smallest metrics were milking animals with the genotype AB (1703,77 ± 46,87) on the kappa-casein gene with the AA genotype (1657,46 ± 45,6) gene and beta-lactoglobulin with genotype AB (1605,64 ± 67 44) prolactin gene. When milk production study depending on the genotype of the complex CSN3 / bLGB / Prl, on udoyu rates were higher in animals with genotype AA / AB / AA (1839,83 ± 135,46), and fat content in milk - with genotype AB / AA / AA (4,13 ± 0,24).
Keywords: GENE, KAPPA-CASEIN, BETA-LACTOGLOBULIN, PROLACTIN, ALLELE, GENOTYPE, POLYMORPHISM, CATTLE |