The problem of biological safety of flocks of cattle of dairy breeds in the Russian Federation

Chernykh, Oleg Yurievich; Koshchaev, Andrey; Lysenko, Aleksandr A.; Lagutin, D. V.; Mischenko, A. V.

doi:10.22406/aabs-18-4.3-33-39

Cited by 1 publication

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…и избыточного содержания кислых элементов (хлор, фосфор, сера и др.) сдвигается кислотно-щелочное равновесие крови в сторону ацидоза, что снижает резервную щелочность крови и общую резистентность [11,16,33].…”

Section: обзоры | болезни крс Reviews | Bovine Diseasesunclassified

“…Закисление содержимого рубца (рН 5,5) приводит к значительному превышению уровня летучих жирных кислот в крови и возникновению метаболического ацидоза, развитие которого является основным патогенетическим механизмом дистрофии печени и почек, а также других патологий [4,8,[10][11][12][13][14][15][16][17][18][19][20][21][22]. Перевод животных на концентрированные корма приводит к изменению состава рубцовой микрофлоры [4,5,15,23].…”

unclassified

See 1 more Smart Citation

Metabolic diseases in cattle

Mischenko

Yashin

et al. 2021

Veterinariâ segodnâ

Self Cite

View full text Add to dashboard Cite

The main trend in the development of dairy farming in the Russian Federation suggests maximising milk yield and reducing milk net cost. The economic effectiveness of industrial dairy farming is largely determined by adequate feeding, as well as effective system of measures to ensure animal health and prevent infectious and non-infectious mass diseases. The main reason for the premature retirement of highly productive cows is based on the factors typical of the intensive technologies used in dairy cattle breeding, which lead to the occurrence of metabolic diseases. It is established that the intensity of metabolism is directly linked to the high productivity of cows. With a highly concentrated, mainly silage-based type of feeding, an imbalance of nutrients is often recorded, in particular as regards the sugar/ protein ratio, leading to deep metabolic disorders and the development of immunodeficiency states. Metabolic disorders in highly productive cows occur as a result of unbalanced diets as far as protein, carbohydrates, vitamins and minerals are concerned. Acidosis, ruminitis and hepatosis are recorded in disordered cows and heifers. The service period exceeds 100 days in 70–75% of cows. Hepatosis and immunodeficiency states are often found in calves born to cows with signs of deep metabolic disorders. Metabolic disorders often remain unnoticed and become apparent only when pronounced pathological changes occur resulting in decreased productivity and ability to reproduce resistant young animals, as well as culling of animals. Metabolic diseases were recorded in 30–70% of cows examined in large dairy farms. The average lifetime productivity of high-yielding cows is (2.1 ± 0.15) lactations in Russia. The results of epidemiological investigations and laboratory testing of sera samples showed that emulsion inactivated vaccines administered to immunodeficient cattle induce higher titres of virus-specific antibodies than those in animals vaccinated with adsorbed vaccines.

show abstract

Section: обзоры | болезни крс Reviews | Bovine Diseasesunclassified

unclassified