Selection justification of the technology of intensive production of rabbit meat

Abstract

The article presents the results of research on the productivity of rabbits of different genotypes (growth and development, slaughter and meat indicators, fur productivity); a comprehensive evaluation of the productivity of rabbits in the process of industrial hybridization was carried out. The following research methods were used in the work: zootechnical (productivity, growth and development, reproductive capacity), genetic, biometric (determination of average values and their errors, probabilities of research results). The study was carried out in the FG "Elit" of the Kolomyia district; PE "Western Ukrainian Gardens" of Halytsky District; PP Havrylyuk O. Ya. Bogorodchansky district. The method of pairs of analogues was used in the studies. Their selection took into account genotype, sex, age, live weight, origin, physiological state, lactation period, fertility, productivity (reproduction of female rabbits, fattening and slaughter indicators, etc.). Analogous animals in different groups had maximum similarity, and some differences were allowed within the group. The productivity of female rabbits and young rabbits was evaluated according to the index of reproductive qualities of the female rabbit (Luchin, 2004) and the index of comprehensive assessment (PKO) (Luchin, 2005). The received materials of scientific research were processed by the methods of variational statistics according to V.P. Kovalenko et al. (2010). It was established that different variants of crossing the maternal and paternal forms of the three-breed genotype of rabbits 4/8 white giant 3/8 local chinchilla 1/8 Flanders had different effects on the reproductive indicators of female rabbits and subsequent fattening indicators of young rabbits, in particular, average daily growth and waist width. A successful combination of maternal and paternal forms of rabbits (group 2) was revealed, which in the process of industrial hybridization ensured an increase in multifertility by 8.1 head or 2.5 % (р<0.05), high fertility by 64g or 6.25 % (р<0.05), milk yield by 2.8 kg or 7.2 % (p<0.05), nest weight at 35 days old by 13.4 % (p<0.01). The hybrid young obtained from female rabbits of group 2 (IVYAK + 5 %) was characterized by a higher body weight by 43.8 g or 10.3 % (p<0.001) and waist width by 6.15 cm or 12.2 % (p< 0.001) to 3 control groups. The positive result was achieved due to the effective combination of the initial forms, which in turn ensured high productivity of the stock (heterosis) of the final hybrid and its resistance to climatic and technological conditions of keeping.