152 / 176
Молочнохозяйственный вестник, №1 (29), I кв. 2018
152
РЕФЕРАТЫ
применение обоснованым с точки зрения ветеринарии.
Summary
Starter feed is used in feeding calves of dairy and transitional growth periods.
Their use in feeding calves ensures a plane transition from dairy to vegetable rations,
reducing the negative impact of the transition period. The main indicator that reveals
the metabolism in the animal body is blood, so the analysis of the blood parameters
dynamics is necessary to evaluate the impact of feed additives on the physiological status
of calves. Blood metabolites, their composition and properties are the characteristics of
the body reactivity and they allow evaluate the natural resistance of animals. The work
presents the data on general clinical, immunological and biochemical blood indicators
change in calves when adding starter compound feeds in a diet. The experimental part
of the work was carried out on the breeding farm of the Vologda region in repair heifers
of black-and-white breed. It was establish that the calves of both experimental groups
had an increase in bactericidal activity (BABS), lysozyme activity of blood serum (LABS),
as well as phagocytic capacity of neutrophils increased by 36% in the experimental
group, in the control and the experimental group 2 by 24%, which indicate the work
stimulation of the immune system. The results of these studies allow conclude that
starter feeds have beneficial effects on the health of calves of 1,5-2 months, which
makes the their application reasonable, from the standpoint of veterinary medicine.
Электронная Научная СельскоХозяйственная Библиотека