Alexandra A Safronova

Animal Husbandry and Fodder Production. 2024. Vol. 107, no 2. Р. 61-70.

doi:10.33284/2658-3135-107-2-61

Original article

The development of meat productivity and beef quality in Hereford bulls

of various genotypes

 

Alexandra A Safronova 1

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

1safronovaalex03@mail.ru, https://orcid.org/0000-0001-8609-8640

 

Abstract. Establishment of objective methods for evaluation and improvement of quantitative and qualitative indicators of meat productivity of farm animals should be based on comprehensive genetic, physiological and biochemical analysis of the organism. The aim of the research was to study the peculiarities of the formation of meat productivity and beef quality in Hereford bulls of various genotypes for growth hormone and thyroglobulin genes. Hereford bulls (n=9) were reared under the same feeding and housing conditions until 21 months of age. PCR-PDRF was performed for genotyping by polymorphisms of GH L127V growth hormone and TG5 C422T thyroglobulin genes. Slaughter indices, chemical, fatty acid and amino acid composition of meat were determined in experimental animals. A significant effect of GH L127V polymorphism was observed on carcass weight (P≤0.05) and amino acid composition of meat. TG5 C422T polymorphism had a significant (P≤0.05) effect on differentiation of bulls in terms of the ratio of polyunsaturated to saturated fatty acids. Thus, genetic variability of bulls on growth hormone and thyroglobulin genes can be used to improve both quantitative and qualitative indicators of meat productivity of Hereford cattle at marker-assisted selection.

Keywords: bulls, Hereford breed, genotype, slaughter traits, chemical composition, amino acids, fatty acid profile

Acknowledgments: the work was performed in accordance to the plan of research works for 2023-2025 FSBRI FRC BST RAS (No. FNWZ-2021-0001).

For citation: Safronova AA. The development of meat productivity and beef quality in Hereford bulls of various genotypes. Animal Husbandry and Fodder Production. 2024;107(2):61-70. (In Russ.). https://doi.org/10.33284/2658-3135-107-2-61

 

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Information about the authors:

Aleksandra A Safronova, research assistant 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.

The article was submitted 15.05.2024; approved after reviewing 31.05.2024; accepted for publication 10.06.2024.

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