FATTENING AND MEAT QUALITIES OF YOUNG PIGS OF DIFFERENT INTRABREED DIFFERENTIATIONS BY ORIGIN AND BREEDING VALUE

Abstract

The paper presents the results of the study on fattening and meat qualities of young pigs of different intrabreed differentiation by origin and breeding value. The research was conducted on farms and processing enterprises of Dnipropetrovsk region, as well as in the Laboratory of Animal Husbandry of the State Institution "Institute of Grain Crops of NAAS of Ukraine". It was established that Large White young pigs from the controlled population at the age of achievement of live weight in 100 kg, at the fatback thickness at the level of 6-7 thoracic vertebrae and at the length of the chilled carcass exceed the minimum requirements of the elite class by 13.85% in average. Significant differences between animals of English and Hungarian origin were established in the average daily gain of live weight (2.28%) and the age of achievement of live weight in 100 kg (3.58%). Young pigs from group I (intrabreed differentiation by selection index "И") and from group II (intrabreed differentiation by Sazer-Fredin index) exceeded peers from opposite groups in the average daily gain in live weight by 7.48-2.75%; in the age of achievement of live weight in 100 kg by 3.87-3.41%. The difference between the groups in the fatback thickness at the level of 6-7 thoracic vertebrae, in the length of the chilled carcass and in the length of the bacon side of the chilled carcass varied from 0.51 to 12.16%. The maximum increase in additional products was obtained from the sale of one head of Large White young pigs of English origin (+1.86%), animals from group I of intrabreed differentiation by selection index "И" (+3.39%) and animals from group II of intrabreed differentiation by index Sazer-Fredin (+2.11%). Based on the obtained data, it was established that the criterion for selection of highly productive animals is the value of the selection index "И" +0.181 - +3.205, Sazer-Fredin index -1.017 - -0.102.