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SPECIALTY OF PROTEIN METABOLISM CHANGES AND MEAT PRODUCTIVITY PERFORMANCE OF DIFFERENT TYPES OF HIGHER NERVOUS ACTIVITY BULL-CALVES OF VOLYN MEAT BREED IN FEEDING FEED ADDITIVE «MIKROLIPOVIT»

M. Z. Paska

maria_pas@ukr.net

Lviv National University of Veterinary Medicine and Biotechnology named S. Z. Hzhytskoho, 50, Pekarska St., Lviv, 79010, Ukraine

The results of the study of the influence of feed additive «Mikrolipovit» on protein status and basic slaughter quality parameters of fattening bull-calves of Volyn meat breed different types of higher nervous activity are presented in the article. The study was conducted at the «Agricultural firm «Dobrosyn» Zhovkva district, Lviv region on bull-calves meat direction of productivity.

The types of higher nervous activity (HNA) in calves was determined using the outside the chamber method of making motor-food conditioned reflexes A. S. Makarov. Based on the investigations conditioned reflex activity formed four experimental groups of five animals most typical representatives of specific types of HNA in each. The first group animals were strong balanced mobile type of HNA. The second group animals were strong balanced inert type of HNA. The third group were animals strong unbalanced type of HNA. The fourth group was animals of weak type of HNA.

Animals of all groups received basic diet in which the part of the grain ration replace by 5% of plant-vitamin and mineral supplements «Mikrolipovit».

At blood serum wete determined: total protein with biuret reagent, the ratio of protein fractions (%) by electrophoresis on plates of 7.5% polyacrylamide gel. To study the effect of dietary compounds on animal performance measured absolute, average daily and relative gains.

Established that feeding up the feed additive «Mikrolipovit» causes increasing protein content in blood serum of calves, relative content of albumin and β-globulins, growth albumin- globulin ratio, reducing the amount of α-globulin in calves of all types of higher nervous activity. The most optimal values were in bull-calves of strong balanced inert type of higher nervous activity.

Correction of the diet of young fattening by biologically active substances improves productivity, which shows by the growth in body weight, absolut and average daily rate. Maximizing productivity found in fattening bull-calves of strong balanced inert type compared with other research groups.

Keywords: BULL-CALVES, VOLYN MEAT BREED, TYPES OF HIGHER NERVOUS ACTIVITY, SERUM PROTEINS, MEAT PRODUCTIVITY

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