Indicators of protein metabolism and the elationships with physico-chemical properties of the longest back muscle young pigs of the universal direction of productivity

Abstract

The purpose. To investigate the physicochemical properties of the longest back muscle of young pigs of a large breed of different intrabreed differentiation according to some indicators of protein metabolism, as well as to calculate the level of correlations between traits. Methods. Zootechnical, biochemical, statistical, purebred breeding. Control fattening of young pigs of the large white breed was carried out in agricultural formations of the Dnipropetrovsk region, their slaughter and selection of samples of the longest back muscle – LLC "Globynskyi Myasokbinat", research of biochemical indicators of blood serum – research center of biosafety and ecological control of agricultural resources of the Dnipro State Agrarian and Economic University, physicochemical properties of the longest muscle of the back – zoochemical analysis laboratory of the Institute of Pig Breeding and AIP of the NAAS. The following indicators were studied in blood serum and muscle tissue samples of animals: content of total protein, g/l; urea content, mmol/l; cholesterol content, mmol/l; active acidity (pH), acidity units; moisture retention capacity, %; tenderness, s; loss of muscle tissue during heat treatment, %; color intensity, units ext.×1000. The results. It was established that the biochemical indicators of blood serum (total protein content, urea content) correspond to the physiological norm of clinically healthy animals. The number of highquality samples according to the moisture-retaining capacity of the longest muscle of the back is 8.0 %, color intensity – 20.0 %, tenderness – 8.0 %, and the coefficient of variability of these characteristics ranges from 2.52 to 14.57 % . The difference between groups of experimental animals in the physico-chemical properties of muscle tissue, taking into account intrabreed differentiation in the content of total protein and urea in blood serum, ranges from 1.23 to 10.71 %. Conclusions. The indicators of the interior of young pigs of the experimental group correspond to the physiological norm of clinically healthy animals. The coefficient of pairwise correlation between indicators of protein metabolism and physicochemical properties ranges from –0.222 to +0.288; reliable values of this biometric indicator between features have not been established. Key words: young pigs, breed, biochemical indicators of blood serum, longest back muscle, physicochemical properties, variability, correlation.