Approaches to improving productivity and products quality of based on the use of dietary supplements in the industrial rabbit breeding indutry

The article presents the results of evaluating the effectiveness of the use of the probiotic drug "Subtilis – S" on the reproductive ability of female rabbits, as well as evaluating the effect of the combined use of the probiotic drug "Subtilis – S" and Jerusalem artichoke pulp as part of a full-fledged granular compound feed for young rabbits. The results of the research showed that the introduction of a complex of dietary supplements contributes to improving the safety, meat productivity and improving the quality of the products obtained in the industrial rabbit breeding industry.

Introduction. The main factor in realizing the genetic potential of productivity of rabbits is a fullfledged feeding, that is, balanced in vitamin, amino acid composition, metabolic energy, raw protein. It is this problem in rabbit breeding that is currently the most relevant and significant. On the other hand, more and more attention is being paid to the search and improvement of means aimed at increasing the body's defenses of breeding objects, including complex preparations of various origins as a growth stimulant, the acquisition of specific and nonspecific immunity, including dietary supplements with probiotic and sorption properties that have a positive effect on the safety and productivity of farm animals. The purpose of our research is to evaluate the effectiveness of the use of a complex of bioadditives of probiotic and sorption nature as part of a full-fledged granular compound feed for young rabbits in order to obtain environmentally safe rabbit breeding products.

Оbject. The object of research is rabbits of the hybrid form of the French selection Hikol.

Materials and methods. The research was carried out on the basis of the Lipetsk Rabbit LLC industrial complex in the Khleven district of the Lipetsk region. To conduct the research, a population of male rabbits of 30 days old, 15 heads in each group, was selected. The control group of rabbits received the main diet (compound feed without the introduction of dietary supplements), the rabbits of the experimental groups received compound feed PZK-92 UAH, which included the probiotic complex "Subtilis-S" (0.6 g / kg and 1.0 g / kg) and Jerusalem artichoke pulp 10% by weight of compound feed.

Results and conclusions. The use of the probiotic complex "Subtilis-S" contributed to an increase in the fertilization of rabbits by 8% relative to the control group of peers, there is a decrease in the level of stillborn baby rabbits by 47%. It was found that the largest nest mass during weaning was in the experimental group, which significantly exceeded the control group by 2,504 kg or 29.82% (P≥0.95), which is associated with higher milk rabbits of the experimental group. The combined use of the probiotic drug "Subtilis - S" at a dosage of 1.0 kg per 1 ton of compound feed and Jerusalem artichoke pulp at a dosage of 10% as part of a full-fledged granular compound feed contributed to an increase in the live weight of individuals in group 3, which affected the slaughter yield, which was 62.09%. As a result of the conducted studies, an increase in the pulp mass in the carcasses of group 3 was achieved by 12.45% and an increase in the meat index to 4.79. An increase in the protein content in the meat of rabbits of the 3rd group was recorded, with a simultaneous decrease in the mass of the fat fraction, which indicates an increase in the nutritional value of meat. The economic evaluation of the research results indicates an increase in the level of profitability by 32.59% when using the proposed full-grain granular compound feed with the introduction of the studied dietary supplements.

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