Physico-chemical parameters of milk of cows with different proportions of blood in the Holstein breed
https://doi.org/10.32634/0869-8155-2023-375-10-63-67
Abstract
Relevance. Providing the countryʼs population with high-grade food products of its own production is an important task facing the workers of the country›s agro-industrial complex. Milk is such a product. Milk is not only a valuable food product, but also a raw material for the dairy industry. Cattle are one of the main sources of milk, so the study of cowsʼ milk is an urgent task. The aim of the work was to study the physicochemical and sanitary-hygienic indicators of milk of cows of different genotypes by blood relative to the Holstein breed.
Results. As a result of the research, it was found that the best content of dry matter and its components was milk obtained from cows with a Holstein genotype of 75–91%. In our opinion, this is explained by the effect of reversion to the mean in animals of this group and, to some extent, by the effect of heterosis, which manifested itself when crossing Black-and-White cows and Holstein bulls. Animals with a higher level, ranging from 91% to 97% for Holsteins, had the lowest values in terms of the content of dry matter and its components in milk. In the 4th group, where there were practically purebred cows with a blood ratio of 97% or more according to Holstein, an increase in the dry matter in milk relative to the 3rd group was found.
Supporting agencies: The study is exploratory and was carried out within the framework of scientific research of the Ural State Agrarian University (state registration No. AAAA-A19-1191014000069).
About the Authors
A. S. Gorelik
Ural Institute of the State Fire Service of the Ministry of Emergency Situations of Russia
Russian Federation
Russian Federation
Artem Sergeevich Gorelik, Candidate of Biological Sciences
22 Mira Str., Yekaterinburg, 620137
M. B. Rebezov
V.M. Gorbatov Federal Research Center for Food Systems of the Russian Academy of Sciences; Ural State Agrarian University
Russian Federation
Russian Federation
Maksim Borisovich Rebezov, Doctor of Agricultural Sciences, Professor, Chief Researcher; Doctor of Agricultural Sciences, Professor of the Department of Biotechnology and Food Products
26 Talalikhin Str., Moscow, 109316
42 Karl Liebknecht Str., Yekaterinburg, 620075
O. V. Gorelik
Ural State Agrarian University
Russian Federation
Russian Federation
Olga Vasilyevna Gorelik, Doctor of Agricultural Sciences, Professor
42 Karl Liebknecht Str., Yekaterinburg, 620075
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Review
For citations:
Gorelik A.S., Rebezov M.B., Gorelik O.V. Physico-chemical parameters of milk of cows with different proportions of blood in the Holstein breed. Agrarian science. 2023;1(10):63-67. (In Russ.) https://doi.org/10.32634/0869-8155-2023-375-10-63-67
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