Аграрный вестник Урала № 05 (147) 2016Ветеринария
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.
black-motley breed, Holstein breed, selection parameters, productivity, disposal of animals, mastitis.
1. Azaubaeva G. Natural resistance cows at changing the period of lactation and energy supply // Main zootechnician. 2011. № 1. P. 24–28.
2. Bakai A., Golubev A. Performance fertility highly productive cows and their relation to productivity // Main zootechnician. 2011. № 12. P. 6–8.
3. Barkova A. S., Shurmanova E. I., Lipchinskaya A. K., Baranova A. G. The incidence of cow mastitis and milk quality // Agrarian Bulletin of the Urals. 2010. № 11. P. 10–11.
4. Braginets S. A., Loginov Zh. G. Impact of milking level of Holstein cows a number of economic-useful signs // Fifth International Scientific Conference of Iran and Russia on the development of agriculture. SPb., 2010. P. 393–397.
5. Gridin V. F., Gridina S. L. Milk yield of cows and udder morphological indicators // Agrarian Bulletin of the Urals. 2014. № 8. P. 27–29.
6. Donnik I. M., Loretts O. G. Influence of milking technology in milk production and quality of milk of cows // Agrarian Bulletin of the Urals. № 12. P. 13–16.
7. Esmagambetov K. K., Donnik I. M., Loretts O. G., Leonov P. V. Variability and heritability of agronomic and biological features of cows of black-motley and Holstein breed in conditions of Trans-Urals // Agrarian Bulletin of the Urals. 2015. № 11. P. 27–29.
8. Kolchina A. F., Barkova A. S., Barashkin M. I. Modern methods in the diagnosis of breast pathology of highly productive cows // Agrarian Bulletin of the Urals. 2012. № 12. P. 12–14.
9. Loretts O. G., Gorelik O. V. Influence of genotype on milk production // Agrarian Bulletin of the Urals. 2015. № 10. P. 29–34.
10. Mymrin V. Characterization of the population status of black-motley cattle of the Ural type // Dairy and beef cattle. 2012. Special issue. P. 22–24.
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