МРНТИ 68.39.35                                                                              №3 (2020г.)

Ahmetova N.I., Dolgikh М.Е., Dzumatayeva G.P.

The article presents the characteristics of the fattening and meat properties of three-breed hybrids, obtained as a result of crossing F1 sows of two genotypes (at the first stage, the reciprocal mating scheme was used) with the Duroc meat ыbreed, and their comparative assessment with the original breeds – Large White and Aksai Black Pied. As a result of the data obtained, it was established that the optimal crossing option is the ♀F1 (LW/AK) x ♂D genotype. Animals of this group showed the best indicators: average daily gain – 596 g, age at 196 days for 100 kg, relative gain 165.4%. Another experimental group of genotype ♀F1(AK/LW) x♂D was significantly inferior in all of the above characteristics, but at the same time showed a slightly less fat thickness, by 1 mm, and the body length – a little more, by +1 cm. It should be noted that the hybrids were largely
superior to the Large White and Aksai, especially in terms of fattening qualities.
Keywords: three-breed crossing, Large White, Aksai Black Pied, Duroc, genotype, fattening qualities, meat qualities, broad body index.