Some biochemical indicators of serum, fattening and meat quality of young pigs of different classes of distribution according to the Sazer-Fredin index
The paper presented research on biochemical indicators from blood serum of young pigs of Large White breed, their fattening and meat qualities, and the cost-effectiveness of the research results. Research was carried out in agricultural formations of the Dnipropetrovsk region, meat-packing plant “Jazz”, the Research Center for Biosafety and Environmental Control of Agricultural Resources of the Dnieper State Agrarian and Economic University, and the Laboratory of Animal Husbandry of the Institute of Grain Crops of NAAS. The work was carried out according to the research program of NAAS of Ukraine No.30 research program, "Innovative technologies of breeding, industrial and organic production of pig breeding" ("Pig breeding"). The object of the research was young pigs of a large white breed of Hungarian selection. Conditions for feeding and keeping animals in the experimental groups were identical and complied with zootechnical standards. Evaluation of young pigs for fattening and meat quality was carried out taking into account the following indicators: average daily gain of live weight during the control fattening, g; the age of reaching live weight 100 kg, days; thick bacon at the level of 6-7 thoracic vertebrae, mm; the length of the chilled carcass, cm; length of bacon half of chilled half-carcass, cm. According to generally accepted methods, the economic efficiency of the research results and biometric processing of the data were carried out. The Cheddock scale determined the strength of the correlations between signs. The biochemical indicators of the serum of young pigs of the experimental group were found to correspond to the physiological norm of clinically healthy animals. The difference between the groups in terms of total protein content (h/l), urea content (mmol/l) and creatinine concentration (μmol/l) on average is 7.18%. Young pigs of the controlled herd at the age of reaching a live weight of 100 kg, the thickness of the bacon at the level of 6-7 thoracic vertebrae, and the length of the chilled carcass, according to the requirements of the current instruction on pig grading, the minimum requirements for the elite class prevail by an average of 14.38%. Taking into account the intra-breed differentiation of young pigs of large white breeds according to the Sazer-Fredin index, it was found that animals in group II (I=+0.003-+3.211) were dominated by peer I (I=-1.791--0.329) by the average daily increase in live weight during the control fattening period of control fattening by 3.62% (td=1.43, P>0.05), the age of reaching a live weight of 100 kg by 2.86% (td=2.21, P<0.05), the thickness of bacon at the level of 6-7 thoracic vertebrae - by 10.10% (td=3.70, P<0.01), the length of the cooled carcass by 1.34% (td=1.52, P>0.05), the length of bacon half of the cooled half-carcass by 2.25% (td=0.87, P>0.05). The pair correlation coefficient between the biochemical indicators of blood serum, fattening, and meat qualities of young pigs of the large white breed range from -0.533 to +0.528. The use from young pigs of group II (Sazer-Fredin index ranges from +0.003 to +3.211 points) provides additional products at the level of +1.38%, and its cost is 360.32 UAH/head.