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Information × Registration Number 0221U101972, 0119U001251 , R & D reports Title To determine the breeding value of meat productivity pigs under different paratypical conditions. popup.stage_title Head Tsereniuk Oleksandr M, Registration Date 27-01-2021 Organization Institute of animal science popup.description2  The genealogical structure of domestic populations of Welsh, Landrace and Ukrainian meat breeds was assessed. There has been a reduction in the breeding base for all evaluated breeds of domestic selection. Data on a group of indicators of reproductive, fattening and slaughter qualities were collected to assess the genetic potential of productivity and to assess the degree of realization of genetic potential. QTL gene polymorphism was evaluated. In the estimated population of Welsh pigs, 8.01% of animals carrying the mutant allele of the RYR-1 gene were found. Comparing the reproductive performance of queens free of the mutant allele and the queens of its carriers, the advantage of the first animals over the latter in all assessed indicators of reproductive ability. At the same time, comparing the daughter and maternal generations within groups with different allelic variants of the RYR-1 gene, revealed no progress in animals without the mutant allele and, conversely, the presence of progress in uteri that carry this allele. Regarding the estimated genetic potential for productivity, uteri that carried the mutant allele were less important than the entire estimated population in all respects. The genetic potential of productivity at the age of reaching a live weight of 100 kg for the new generation of the estimated population of the Welsh breed is 162.39 days, the Landrace breed - 161.25 days; with an average daily gain, Wales is 860.42 grams per day, Landrace - 877.92 grams per day; the thickness of the fat on the population of the Welsh breed is 11.50 mm, Landrace - 11.20 mm. Evaluation of fattening qualities of young animals obtained from queens with different allelic variants of genes RYR-1, ESR, MC4R did not reveal significant differences. However, with regard to the thickness of the fat at the level of 6-7 thoracic vertebrae, a probable advantage of animals obtained from the mothers of carriers of the mutant allele "n" of the RYR1 gene has been established. Product Description popup.authors Akimov Oleksandr V Kamyshan Natalia V Kulibaba Roman O Martynyuk Irіna M Pomitun Larysa I Tsereniuk Oleksandr M Shkavro Natalia M popup.nrat_date 2021-01-27 Close