Phenotyping of Dairy Cattle in Breeding Programs
This article examines the phenotypic features of cattle and their use in breeding to improve the characteristics of milk productivity. As part of the research, 483 black-andwhite pedigree cows in the breeding enterprises of the Omsk region were evaluated by a set of characteristics. It was found that the average age of calving cows was 2.5 years. 42.7% in the total cow population were full-grown cows. The maximum level of milk productivity was observed in second lactation cows. The milk yield for 305 days of the second lactation was 6.720 kg, which was 621 kg or 9.24% higher than that in first-calf heifers. The phenotypic characterization of breeding stock allowed us to identify all the necessary reserves for obtaining high-yielding offspring, in order to increase the level of milk production in the black-and-white cattle population of the region. This research was conducted with the use of the technical base and laboratory areas of the Department of Animal Science (Faculty of Animal Science, Commodity Science and Standardization), as well as the Center for the Collective Use of Scientific Equipment of the Federal State Budgetary Educational Institution of Higher Education “Omsk State Agrarian University named after P.A. Stolypin”. The analytical data and the results of the research presented in this publication may be of interest for students of specialized educational institutions, as well as for specialists in dairy cattle farming, and can be implemented at breeding enterprises.
Keywords: Phenotyping, breeding, milk productivity, cattle
 Skryabina, O. V., Ryabkova, D.S., Vikylov, V.V., Diner, Yu. A. (2020) Advanced Specialized Food Production Technologies in the Framework of Food Net. Presented at Scientific Conference on the Fifth Technological Order: Prospects for the Development and Modernization of the Russian Agro-Industrial Sector Omsk, 29 January 2020. Russia. Omsk: Omsk State Agrarian University, pp. 130-134.
 Kovrov, A. V. (2018). Assessment of Milk Production and Reproductive Qualities of Cows. Scientific Life, vol. 11, pp. 40-46.
 Ruzanov, I. V., et al. (2006). Genetic and Phenotypic Assessment of Milk Productivity of Brown Swiss cows. Zootechnics, vol. 12, pp. 2-3.
 Gridin, V. F. (2015). The Relationship between the Milk Production of First-Calf Heifers of Various Breeding and Body Measurements. Agrarian Bulletin of the Urals, vol. 1, issue 131, pp. 41-43.
 Ivanova, I., Trotsenko, I. and Trotsenko, V. (2019). Automation of processes in dairy cattle production. Presented at IOP Conference Series: Materials Science and Engineering. X International Scientific and Practical Conference - Innovative Technologies in Engineering Yurga, 23-25 may 2019, Russian Federation. Yurga: Institute of Physics Publishing, doi:10.1088/1757-899X/582/1/012035.
 Abugaliev, S. K. (2017). Organization of Breeding Work in Dairy Cattle Breeding. Zootechnics, vol. 8, pp. 17-21.
 Abramova, M. V. and Barysheva, M. S. (2018). Comprehensive Assessment of the Exterior of Cows and its Relationship with Milk Production. Bulletin of Bury at State Agricultural Academy after V.R. Filippov, vol. 4, issue 53, pp. 167-174.
 Ivanova, I. P. and Trotsenko, I. V. (2019). Application of Selection and Genetic Parameters in Breeding Work with Dairy Cattle. Bulletin of KrasGAU, vol. 3, issue 144, pp. 65-70.
 Gridin, V. F. (2015). Dependence of Milk Yield on the Exterior of First-Calf Cows. Biotechnology Bulletin, vol. 2, issue 4, p. 3.
 Zhashuev, Z. K., Gabaev, M. S. and Gukezhev, V. M. (2019). The Human Factor in the Breeding of Dairy Cattle Veterinary Medicine. Animal Science and Biotechnology, vol. 11, pp. 94-101.
 Lefler, T. F. and Sadyko, S. G. (2019). Comparative Assessment of Milk Productivity of Cows of Different Lines. Bulletin KrasGAU, vol. 5, issue 146, pp. 138-142.
 Prokhorenko, P. N. and Zavertyaev, B. P. (2004). Genetics and Breeding of Dairy Cattle. Zootechnics, vol. 9, pp. 2-612.
 Kostomakhin, N. M. and Khazov, V. P. (1988). The Experience of Raising Highly Productive Cows. Zootechnics, vol. 5, pp. 18-19.
 Saks, E. I. (2016). Basis for Genomic Assessment. Farm Animals, vol. 1, pp. 14-18.
 Fedosenko, E. G. and Gvazava, D. G. (2018). Assessment of the Breeding Base in the Dairy Farming of the Kostroma Region. Bulletin of APK Upper Volga, vol. 3, issue 43, pp. 46-49.
 Gridin, V. F. (2015). The Relationship Between the Milk Production of First-Calf Heifers of Various Breeding and Body Measurements. Agrarian Bulletin of the Urals, vol. 1, issue 131, pp. 41-43.
 Filinskaya, O. V. and Gerasimova, L. Y. (2019). Productive Qualities of Cows of Different Genotypes. Bulletin of APK Upper Volga, vol. 2, issue 46, pp. 32-36.