Vitaly V Gorshkov, Elena M Shchetinina

Animal Husbandry and Fodder Production. 2024. Vol. 107, no 3. Р. 89-98.

 

doi:10.33284/2658-3135-107-3-89

Original article

Possible increase of volumes of industrial milk production due to changes in milk productivity of cows in the course of intra-line selection

 

Vitaly V Gorshkov1, Elena M Shchetinina2

1Altai State Agrarian University, Barnaul, Russia

2Federal Research Center for Nutrition and Biotechnology, Moscow, Russia

1vita-gorshkov@yandex.ru, https://orcid.org/0000-0003-3407-0552

2schetinina2014@bk.ru, https://orcid.org/0000-0002-3463-9502

 

Abstract. The change in milk productivity in the herd during intraline selection was studied. The studies were carried out on dairy cows of the Black Spotted breed in the conditions of the Molodezhnaya Poultry Farm OJSC, Altai Territory. To do this, we divided all full-aged cows into four groups: 1 completely purebred animals, 2 – with less than 50% Holstein blood, 3 – half-blooded and 4 – with more than 50% blood. The origin, blood and milk productivity of cows were studied based on zootechnical accounting data. Improving a herd of the Black Spotted cows, weight and milk productivity of dairy cows increases with an increase in the level of Holsteinization. The number of first-calf heifers and full-aged cows was 96-100% classified as elite and elite-record. Differences in milk fat content among animals of different ages, blood share and origin were not established and amounted to 3.9%.The level of milk productivity was, taking into account blood in the Holstein breed, within the range of 4687-5078 kg with the lowest level in purebred Black Spotted cows, in the age group – 4042-4966 kg with the highest value in the third lactation and with a linear distribution, the best indicators were in cows of the line Reflection Sovering 198998 and Vis Idial 933122. Based on the research results, we can conclude that with strict implementation of the plan for individual selection of cows and heifers, it is possible to form a rational genealogical structure of the herd, which will ensure a significant increase in the efficiency of milk production on the farm.

Keywords: cattle, Black Spotted breed, heredity, genealogical structure of herd, milk yield, fat content, milk fat, selection, dairy industry, milk

For citation: Gorshkov VV, Shchetinina EV. Possible increase of volumes of industrial milk production due to changes in milk productivity of cows in the course of intra-line selection. Animal Husbandry and Fodder Production. 2024;107(3):89-98. (In Russ). https://doi.org/10.33284/2658-3135-107-3-89

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Information about the authors:

Vitaly V Gorshkov, Cand. Sci. (Agriculture), Associate Professor, Head of the Department of the Department of Production Technology and Processing of Livestock Products, Faculty of Biology and Technology, Altai State Agrarian University, 98 Krasnoarmeysky Ave., Barnaul, Altai Territory, 656049, tel.: +7-903-957-5424.

Elena M Shchetinina, Dr. Sci. (Technical), Associate Professor, Leading Researcher at the Laboratory of Food Biotechnologies and Specialized Products, Federal Research Center for Nutrition and Biotechnology, 2/14 Ustinsky proezd, Moscow, 109240, tel.: +7-923-645 -2149.

The article was submitted 28.06.2024; approved after reviewing 31.07.2024; accepted for publication 09.09.2024.

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