INCREASE PRODUCT QUALITY RABBIT BY MEANS OF INDUSTRIAL MATING

Abstract

The results of analytical estimation and theoretical substantiation of industrial crossbreeding in the population of rabbits Poltava silver for the increase of productive and reproductive characteristics in industrial hybrids are given. By in-depth analysis of the types of inheritance of signs at different variants of cross-breeding it was established that, by separate signs, the productivity of the land is determined by the additive action of the genes. This indicates an increase in the fattening qualities of rabbits and the

expediency of using industrial crosses of rabbits Poltava silver with specialized beef breeds.

For research purposes cross-breeding females of rabbits Poltava silver with rabbits, Soviet Chinchilla and New Zealand white. Obtained as a result of crossing the generation of feral rabbits F1, which theoretically will be larger, is planned to be further crossed with males of the New Zealand white breed, to consolidate the signs that shape the meat productivity of animals.

It has been established that in the combination of rabbits Poltava silver and New Zealand white signs of coloring will not be shown, since both breeds are genotyped by genes in a state of homozygous recession and are not related to each other. Therefore, 100% of the animals will have a gray "wild" color.

A similar situation can be observed when crossing rabbits Poltava silver and Soviet chinchilla. Since the white color gene is in a heterozygous state, in theory it will not manifest itself in the animals of the next generation. The rest of the genes will undergo cleavage by traits and the animals that will be received will have the following theoretical distribution: 18.6% of animals with the chinchilla rabbit phenotype, 56.3% of the standard gray color, and 25% of the animals are of a silvery color.

It is advisable to carry out an in-depth analysis of the types of inheritance of signs at different crossing variants, which will provide the basis for determining the best options for combining parent breeds to increase the productivity of hybrids.