METABOLISM AND MEAT PRODUCTIVITY OF DIFFERENT TYPES OF HIGHER NERVOUS ACTIVITY BULL-CALVES OF POLISSYA MEAT BREED FEEDING FEED ADDITIVE «MIKROLIPOVIT»

M. Z. Paska

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

Meat productivity of cattle is formed by wide range of morphological, biological, physiological characteristics, which depend on the species, the genotype of animals, environmental conditions, type of higher nervous activity, diet and usefulness is measured by such indicators as the cost of feed per unit increase; body weight, absolute and relative growth rates, carcass yield, meat quality. Therefore, the study of biochemical processes in fattening bull-calves Polissya meat breed, depending on the type of higher nervous activity and the effect of feeding feed additive «Mikrolipovit» on the main indicators of metabolism and meat productivity is extremely important.

Purpose to examine the effect of feed additive «Mikrolipovit» on some indices of protein metabolism and main performance numbers of fattening bull-calves Polissya meat breed, depending on the type of higher nervous activity. The study was conducted at the Society with limited liability «Klen» Zhovkivskyi district, Lviv region on meat direct performance bull-calves of the initial and final fattening period at the age of 618 months.

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.Makarova. 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 (SBM) type of HNA. The second group animals were strong unbalanced (SU) type of HNA. The third group were animals strong balanced inert (SBI) type of HNA. The fourth group was animals of weak type (W) 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 supplement «Mikrolipovit».

Performance study was performed at 6 and 18 months. To this end, in the morning before feeding blood were taken from the jugular vein. The blood activity measured aspartate aminotransferase (AsAT) and alanine aminotransferase (AlAT). Serum was determined: total protein with biuret reagent, the ratio of protein fractions (%) by electrophoresis on plates with 7.5% polyacrylamide gel; glucose and urea sets of firms Lachema, Czech Republic;тotal lipid content was investigated on a spectrophotometer VSU 2-P pry wavelength of 680 nm. To study the effect of compounds of dietary supplements on the growth of animals determined by body weight, absolute, relative and average daily gain. The study of the chemical composition and biological value of meat carried by generally accepted research methods

Established, that feeding a feed additive «Mikrolipovit» promotes increasing protein content in the serum of calves, increasing the relative proportion of albumin and growth albumin-globulin factor in calves of all types of HNA.

The increase in the above parameters and urea indicates the enhancement of protein metabolism in calves, glucose, carbohydrate metabolism and total lipids resulting in increased meat productivity, improved slaughter performance and meat quality characteristics. Based on the data content and the ratio of essential nutrients, biological value of meat its technological properties must be concluded that the meat of calves of different types of higher nervous activity, characterized by optimum chemical composition and high usefulness protein that is fully consistent needs of consumers.

Maximizing productivity of fattening bull-calves, compared to other research groups, found in animals such as inert strong equilibrium type of higher nervous activity (3rd group).

Keywords: PHYSIOLOGY, BULL-CALVES, POLISSYA MEAT BREED, TYPES OF HIGHER NERVOUS ACTIVITY, SERUM PROTEINS, ASPARTATE AMINOTRANSFERASE, ALANINE AMINOTRANSFERASE,UREA, GLUCOSE, TOTAL LIPIDS, MEAT PRODUCTIVITY

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