Morphological and biochemical parameters of blood of lactating cows when using a feed additive based on sunflower meal in their diets

The results of the study of the effect of feeding various doses of the feed additive "Sunflower feed fibers" on the morphological and biochemical parameters of the blood of lactating cows of the Blackand-White breed of the Priobsky type in the conditions of the Altai Territory are presented. This feed additive is a by-product in the production of food and feed protein concentrates from sunflower meal; it is distinguished by fairly high nutritional value and possesses sorption activity. Two experimental and one control group of cows of 10 heads each were formed. The animals of the control group received the basic diet; the cows of the 1st experimental group received an additional 0.5 kg, and the analogues of the 2nd experimental group received 1.0 kg of the studied feed additive. The duration of the experiment was 60 days. It was revealed that by feeding the cows of the experimental groups with the feed additive, at the end of the experiment, the reserve alkalinity of the blood serum was significantly (p ≤ 0.05) higher compared to the control (by 8.2–13 .1%) and significantly (p ≤ 0.05) lower cholesterol levels (by 8.8–15.2%) were observed. The cows of the 2nd experimental group had a significantly (p ≤ 0.05) higher content of erythrocytes in the blood than in the control (by 24.2%), and the animals of the 1st experimental group had a higher level of creatinine in the blood serum by 19.4% (p ≤ 0.01) and aspartate aminotransferase by 22.5% (p ≤ 0.05). The dynamics of the changes in hematological and biochemical blood parameters indicate the optimization of metabolic processes in the body of the animals under the influence of feeding with the studied feed additive.

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