Objective. Study of meat and fat qualities of pigs of different genotypes. The research was conducted on young large white and Poltava meat breeds. Methods. General scientific, interdisciplinary, analytical, zootechnical, physical and chemical. During the fattening period, such indicators as live weight gain and feed consumption per unit of gain, the age of reaching live weight of 100 kg are taken into account. The content of meat, fat and bones in the carcasses, as well as the chemical composition and physical properties of the meat were determined. Results. Observations showed that the average daily increase in the live weight of animals of large white breed during fattening was 690 g, the payment of fodder was 4.22 fodder. unit Young animals reached a live weight of 100 kg in 182 days. Animals of the Poltava meat breed, respectively, 720 g of average daily gain, 3.95 feed. unit and the time to reach a live weight of 100 kg - 170 days. Pigs of the Poltava meat breed surpassed the young of the large white breed in terms of carcass length (by 6.3 cm, or 7.2 %), the weight of the rear third of the half carcass (by 0.75 kg, or 6.6 %) and had thinner (by 5 mm, or 15 %) spigot, evenly distributed along the entire length of the half-carcass. This, in turn, led to a higher yield of the most nutritionally valuable parts ofpork (bone, loin, brisket). The meat of animals of the Poltava meat breed was a little more tender, since it took 35 % less effort to cut its standard sample than the meat of pigs of the large white breed. The meat of pigs of a large white breed was characterized by less boiling and more intensive coloring. The most pronounced were interbreed differences in the chemical composition of pork dishes prepared in different ways. Boiled large white pork contained more moisture (by 3.65 %) and fat (by 4.15 %), but less protein (by 1.1 %). The same pattern was observed in the chemical composition of fried pork. Conclusions. The obtained research results allow us to state that the fleshiness of pig carcasses is a breed, hereditarily determined trait that can be improved by breeding methods. Feeding and housing conditions also affect the productive qualities of pigs, however, their different genotypes react differently and to different degrees to the influence of environmental factors. Keywords: breed, live weight, pork, half carcass length, meat quality, tenderness, chemical composition.
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