БІОХІМІЧНІ ПОКАЗНИКИ СИРОВАТКИ КРОВІ ТА ЇХ АСОЦІАТИВНИЙ ЗВ'ЯЗОК З ВІДГОДІВЕЛЬНИМИ І М’ЯСНИМИ ЯКОСТЯМИ МОЛОДНЯКУ СВИНЕЙ РІЗНОЇ ВНУТРІПОРОДНОЇ ДИФЕРЕНЦІАЦІЇ ЗА ІНДЕКСОМ ТАЙЛЕРА

Victor Ivanovуch Khalak

doi:10.32845/bsnau.lvst.2021.3.3

Victor Ivanovуch Khalak SE Institute of Grain Crops NAAS of Ukraine http://orcid.org/0000-0002-4384-6394

DOI: https://doi.org/10.32845/bsnau.lvst.2021.3.3

Keywords: young pigs, biochemical parameters of blood serum, fattening and meat qualities, index, variability, correlation

Abstract

The article presents the results of research of biochemical parameters serum of fattening and meat qualities of young pigs of different intrabreed differentiation according to the Tyler index, and also calculates the level of correlations between the trait and economic efficiency of the results of the research. The research was conducted in agricultural formations of Dnipropetrovsk region, «Jazz» meat-packing plant, research centre of biosafety and ecological control of agro-industrial resources of Dnipropetrovsk State Agrarian and Economic University and livestock laboratory of the Institute of Grain Crops of NAAS. The object of the study was young pigs of large white breed. Conditions for feeding and keeping animals of the experimental groups were identical and complied with zootechnical standards. Evaluation of young pigs for fattening and meat qualities was carried out taking into account the follow-ing indicators: the average daily increase in live weight during the period of control fattening, g; age of live weight 100 kg, days; fat thickness at the level of 6-7 thoracic vertebrae, mm; length of chilled carcass, cm; length of bacon half of chilled half-carcass, cm (Methods of evaluation of boars and sows by quality of offspring…, 2005). The economic efficiency of research results (Methodology for determining economic efficiency…, 1983) and biometric processing of the obtained data (Lakуn, 1990) were carried out according to generally accepted methods. The strength of the correlations between traits was determined by the Cheddock scale (Sidorova et al., 2003). It was found that the biochemical parameters of the serum of young pigs of the experimental group correspond to the physiological norm of clinically healthy animals. The difference between the groups in terms of total protein content is 5.51-4.72%, urea content - 14.48-18.32%, urea nitrogen content - 13.87-18.76% and creatinine concentration - 10.39-2.50%. Young pigs of the controlled herd at the age of reaching a live weight of 100 kg, fat thickness at the level of 6-7 thoracic vertebrae and length of chilled carcass, according to the current Instructions for grading pigs exceed the minimum requirements for the elite class by an average of 14.38%.Taking into account the intra-breed differentiation of young pigs of large white breed according to the Tyler index, it was found that animals of group I probably outperformed peers of groups II and III in average daily live weight gain during the control period (by 7.35 – 11.49%), age of live weight 100 kg (by 3.54 – 6.33%), the thickness of the fat at the level of 6-7 thoracic vertebrae (by 11.90 – 20.25%). The pair wise correlation coefficient between the biochemical parameters of blood serum, fattening and meat qualities of young pigs of large white breed ranges from -0.608 to +0.750. The use of young pigs of group I (Tyler's index ranges from 155.30 to 182.36 points) provides additional products at the level of +6.03%, and its value is 273.30 UAH / head.

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BIOCHEMICAL INDICATORS OF SERUM AND THEIR ASSOCIATIVE RELATIONSHIP WITH FATTENING AND MEAT QUALITIES OF YOUNG PIGS OF DIFFERENT INTRABREED DIFFERENTIATION BY INDEX ТYLER

Abstract

References