Abstract:
The influence of the season on the main reproductive indices of rabbits and possibilities of their correction was studded. The experiment concerning evaluating the reproductive performances of rabbits depending on the season: fecundity, prolificacy, viability and survival rate of kittens (young rabbits) and the influence of the bio additive „SpiruZn” administration. According to the results established, concerning the indices reflecting the seasonal influence on rabbits’ reproduction results, the lowest values of fecundity were established in the case of mating made in the period of autumn-winter months. The smallest prolificacy was established in the case of births in the winter months. The lowest kitten viability at birth was in the case of autumn births and kitten survival at weaning - in the case of summer births. Thus, the season influences differently rabbits’ reproductive indices. The bio additive „SpiruZn” administered to does in the autumn months contributed to a significant improvement of fecundity, does prolificacy, kitten viability and kitten survival in the period birth-weaning, compared with the witness group.
