Using the selection index for estimation the lifelong productivity of simmental cows
https://doi.org/10.32634/0869-8155-2024-383-6-62-67
Abstract
The research was aimed at developing a breeding index to assess the productive longevity of Simmental cows. To conduct the research, a database was formed with a population of 2.500 retired Simmental cows bred in 14 regions of the Russian Federation in 2008–2022. The BLUP Animal Model approach (Best Linear Unbiased Predicted – BLUP, best linear unbiased forecast) was used to assess breeding value, and the basic procedures of the theory of quantitative traits (REML) were used for breeding and genetic parameters. The calculation of breeding value estimates (Estimate Breeding Value – EBV) was carried out using the RENUMF90, REMLF90 and BLUPF90 programs. Animals with the best values of the breeding index showed the most favorable genetic estimates in the complex based on the results of lifelong productivity: milk yield – +1907.92 kg, the amount of fat – +60.54 kg, the amount of protein – +67.25 kg, the number of productive days – +0.98, as well as economic indicators from +86.3 to 56613.9 rubles/head. Due to the calculated correlation coefficients, it can be seen that the index values are reliable and at a high level interrelated with both phenotypic indicators r = +0.62–0.64 and genetic estimates (EBV) r = +0.98–0.99. The calculated data of the breeding index, which includes genetic assessments of animals, as well as the economic contribution of indicators, show themselves to be a convenient tool in breeding work with the population of Simmental cattle.
Supporting agencies: Scientific research was carried out within the framework of the state task of the Ministry of Education and Science of the Russian Federation, registration № 124020200029-4 (FGN-2024-0013), as well as within the framework of the work of the breeding center (association) for cattle of the Simmental breed.
About the Authors
L. P. Ignatieva
L.K. Ernst Federal Research Center for Animal Husbandry
Russian Federation
Russian Federation
Larisa Pavlovna Ignatieva, Candidate of Agricultural Sciences, Leading Researcher at the Department of Population Genetics and Genetic Foundations of Animal Breeding
60 Dubrovitsy village, Podolsk, Moscow region, 142132
A. A. Yanglyaeva
L.K. Ernst Federal Research Center for Animal Husbandry
Russian Federation
Russian Federation
Anna Alexandrovna Yanglyaeva, Leading Zootechnician of the Department of Population Genetics and Genetic Foundations of Animal Breeding
60 Dubrovitsy village, Podolsk, Moscow region, 142132
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Review
For citations:
Ignatieva L.P., Yanglyaeva A.A. Using the selection index for estimation the lifelong productivity of simmental cows. Agrarian science. 2024;(6):62-67. (In Russ.) https://doi.org/10.32634/0869-8155-2024-383-6-62-67
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