| Abstrakt: |
In the world market, there is a tendency towards an increase in demand for poultry products. Therefore, it is necessary to confirm the need to intensify the production of chicken meat and eggs, as the most popular type of poultry products by consumers. One of the modern ways to increase the efficiency of the breeding process is the use of molecular genetic markers. Heterozygous individuals with genotype AG for myostatin gene up to 29 days of feeding have a comparable live weight with broilers with genotype GG and are even insignificantly inferior to the last 7.07 g of weight, and are inferior to individuals with an unknown genotype of 22.41g. At the last stage of feeding broilers, individuals with with the AG genotype outnumber individuals with the GG genotype by 484.57g (p<0.05). Thus, the heterozygous allelic variant of the AG genotype G2109A for the myostatin gene in broilers of the Ross-308 cross can be considered promising for use in marker-associated breeding to obtain a higher live weight. Heterozygous individuals with genotype AG for myostatin gene up to 29 days of feeding have a comparable live weight with broilers with genotype GG and are even insignificantly inferior to the last 7.07g of weight, and are inferior to individuals with an unknown genotype of 22.41g. At the last stage of feeding broilers, individuals with the AG genotype outnumber individuals with the GG genotype by 484.57g (p<0.05). Thus, the heterozygous allelic variant of the AG genotype G2109A for the myostatin gene in broilers of the Ross-308 cross can be considered promising for use in marker-associated breeding to obtain a higher live weight. Homozygous broiler chickens with genotypes AA and GG on day 12 had a lower (p<0.05) live weight by 19.51g (4.24%) and 18.36g (4.51%), respectively, in comparison with the AG genotype for the insulin gene. On the 29th day of rearing, individuals with the AG genotype already had the lowest live weight, which is 529.85g less (p<0.01) from the GG genotype, 535.83g less (p<0.01) from the AA genotype, and 552.26 g less from broiler chicks with unknown genotype. The largest pre-slaughter live weight was observed in broiler chickens with the genotype for the insulin GG gene, which is 472.66g more (p<0.05) from the AA genotype, 1274.19g more (p<0.001) from the AG genotype and 216.79g more (p<0.05) from individuals with an unknown genotype for the insulin gene. [ABSTRACT FROM AUTHOR] |
