Alexandra А Safronova, Kinispay М Dzhulamanov, Lyubov G Surundaeva

Animal Husbandry and Fodder Production. 2022. Vol. 105, no 4. Р. 71-78.

doi:10.33284/2658-3135-105-4-71

 Original article

Genetic assessment of bulls by their productivity

 Alexandra А Safronova1, Kinispay М Dzhulamanov2, Lyubov G Surundaeva3

1,2,3Federal Research Centre of Biological Systems and Agrotechnologies of the Russian Academy of Sciences, Orenburg, Russia

1sovaalexandra@gmail.com, https://orcid.org/0000-0001-8609-8640

2kinispai.d@yandex.ru, https://orcid.org/0000-0001-8039-7471

3lusour@mail.ru

Abstract. The aim of work was to improve the assessment of the Hereford bulls in terms of their own productivity, taking into account their lifetime assessment of meat productivity. There was shown the experience of the breeding farm "Risk" of the Chelyabinsk region on the genetic assessment of bulls according to their own productivity. Test results are analyzed, the dependence of live weight and growth intensity of bulls on the duration of the control rearing is expressed. The perspective questions of selection of the Hereford breed of cattle based on the intensity of growth, aimed at increasing the potential of live weight and average daily gain, have been determined. The fixing of desirable traits in the genotype should be carried out through the leading bulls of the breed using strict selection of progeny. The selection of bulls according to the intensity of weight growth based on the results of evaluation at 15 and 18 months allows us to distribute them into class categories and develop methods for improving it. It can be assumed that animals of the elite class with a record for live weight at 8 months can also be improvers, confirming the high selection and genetic efficiency. It is expedient to use the obtained data in breeding work for the reproduction of calves with different duration of meat productivity formation for different periods of growing and fattening. The data of life-time assessment of weight growth by growing periods show that by the method of intrabreeding selection, using bulls-leaders of the Hereford breed, it is possible to obtain bulls with different growth rates and for different growing periods.

Keywords: bulls, Hereford breed, breeding assessment, breeding, live weight, average daily gain, variability

Acknowledgments: the work was performed in accordance to the plan of research works for 2022-2024 FSBRI FRC BST RAS (FNWZ-2022-0018).

For citation: Safronova AA, Dzhulamanov KM, Surundaeva LG. Genetic assessment of bulls by their productivity. Animal Husbandry and Fodder Production. 2022;105(4):71-78. (In Russ.). https://doi.org/10.33284/2658-3135-105-4-71

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Information about the authors:

Aleksandra A Safronova, post-graduate student of the Breeding and Genetic Center for Beef Cattle, Federal Research Centre of Biological Systems and Agrotechnologies of the Russian Academy of Sciences, 29 9 Yanvarya st., 460000, Orenburg.

Kinispay M Dzhulamanov, Dr. Sci. (Agriculture), Head of the Breeding and Genetic Center for Beef Cattle, Federal Research Centre of Biological Systems and Agrotechnologies of the Russian Academy of Sciences, 29 9 Yanvarya st., 460000, Orenburg., tel.: 8(3532)30-81-74.

Lyubov G Surundaeva, Dr. Sci (Biology), Associate Professor, Head of the Laboratory of Genetic Expertise and Books of Purebred Animals, Federal Research Centre of Biological Systems and Agrotechnologies of the Russian Academy of Sciences, 29 9 Yanvarya st., 460000, Orenburg., tel.: 8(3532)30-81-72.

The article was submitted 16.11.2022; approved after reviewing 01.12.2022; accepted for publication 12.12.2022.

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