Agrarian
Bulletin
of the Urals

Russian Journal of Agricultural Research

The publication is registered by the Ministry of the Russian Federation
for Affairs of the Press, Television and Radio Broadcasting and Mass Communication Media.
Registration certificate: PI number 77-12831 on May 31, 2002
Subscription index in catalog «Russian Press» - 16356
ISSN 1997 - 4868 (Print)

The Journal is included in the list of the leading peer-reviewed scientific journals and publications, which should be published by the main results of theses for the degree of doctor and Ph.D.
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Journal is included in the list of VAK (from 25.09.2017), No. 291

ISSN 2307-0005 (Online)
Key title: Agrarnyj vestnik Urala (Online)
Abbreviated key title: Agrar. vestn. Urala (Online)

Аграрный вестник Урала № 05 (147) 2016

Ветеринария

Елесин А. В. доктор ветеринарных наук, профессор Уральский государственный аграрный университет

Барашкин М. И. доктор биологических наук, профессор, декан Уральский государственный аграрный университет

Шурманова Е. И. кандидат ветеринарных наук, доцент Уральский государственный аграрный университет

Мильштейн И. М. кандидат ветеринарных наук, доцент Уральский государственный аграрный университет

Томских А. С. аспирант Уральский государственный аграрный университет

УДК:636.034

ANALYSIS OF CAUSES OF DISPOSAL CATTLE IN FARMS OF THE SVERDLOVSK REGION

 Intensification of dairy farming industry in our country leads to an increase in population of specialized breeds of gradual reduction in the proportion of cattle with combined productivity. In the Ural region, starting with the 70–80 years of XX century cows of black-motley breed crossed with Holstein. As a result, long-term breeding work created interbreed new type of “Ural” cattle of black-motley breed. Currently, most herds of Ural farms represented by animals of Ural type. Improving the Ural type of livestock carried out in the direction of increasing milk yield, protein-milkiness, prolonging the economic use and other symptoms. It is known that at the same feeding in the same sector average milk yield of cows is different. Therefore, in this case, it’s observed a great influence of hereditary factors. Such examples can be given from the practice of any economy. Not by chance more active in recent years have become to assess the manufacturers on the quality and use of them only improvers. Animals of each breed have its limit in productivity. Of course, during improvement of the breed, these limits may be aggregated. Currently, the average milk yield by breed cows have large fluctuations. Analysis of records of productivity of cattle dairy breeding shows a significant superiority of black-motley breed of cattle, among which the Holsteins highlights. The high level of milk production can only be achieved with a healthy udder. However, due to various pathogens, levels of breast cows, causing reduced quality of the milk increased. Among the many diseases of cows, causing the decrease in milk production, sanitary and technological quality of milk and the economic performance of its production, a special place occupies mastitis – inflammation of the mammary gland. Therefore, the study of various productive qualities of the causes rejection of modern dairy cattle is an urgent problem, which has scientific and practical importance.


Keywords:

black-motley breed, Holstein breed, selection parameters, productivity, disposal of animals, mastitis.


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