The aim of the conducted studies was to determine the run of fattening and slaughter value of imported hybrid pigs: L × Y × D. The uniform nutrition and management was employed; the pigs were fattened from body weight 30 to 115–120 kg. For 4433 animals, who completed fattening and were slaughtered, very good production results were obtained: mean daily body gains – 989 g, feed conversion – 2.88 kg/kg; meatiness – 58.86%; participation of carcasses in classes S and E – 92.9% in total. The obtained results indicate a very good, and, first of all, repeatable quality of the examined hybrid fatteners in respect of traits which are economically important for meat producers and meat industry. They are also the evidence of high and stabilized genetic potential of purebred populations of animals, employed in three-breed commercial crossbreeding, serving for production of piglets for fattening.
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