Reproductive ability of the parent flock of obroshyn by geese with the use of feed additives

Abstract

According to the conditions of the experiment, the effectiveness of using different doses of feed additives ‒ pro- and prebiotic drugs in the diets of the broodstock of Obroshyn white geese was experimentally determined and their influence on the morphological qualities of eggs and the level of productivity was investigated. The article presents the results of studies on the effectiveness of these additives, which ensure an increase in the egg-laying capacity of geese and contribute to the increase in the viability of goslings. The conducted studies have established that the optimal dose for the broodstock of Obroshyn white geese is the feeding of probiotic feed additives “Enzymactivemix” (EAM) at a dose of 150 g per 1 ton of feed and prebiotic preparation “Inactivated dry glutathione yeast” (IDGY) at a dose of 200 g per 1 ton of feed. The best productivity indicators were noted in the broodstock of geese of the II research group, fed EAM at the rate of 150 g per 1 ton, and of the V group, which received IDGY at the rate of 200 g per 1 ton of feed. Higher indicators of egg-laying were noted in geese of the II and V research groups, whose productivity was 40.6‒40.8 pcs eggs, which was 4.4‒4.9 % higher than in the control. According to the results of the incubation of goose eggs, the best indicators of fertilization were in the II and V experimental groups (86.5‒87.2 %). They were higher, respectively, by 6.3 and 7.2 % compared to the control analogues. The hatching of goslings was greater by 5.1 and 5.3 %. It was established that optimal doses of feed additives ‒ pro- and prebiotic preparations to geese of the brood flock improve their reproductive capacity by 7‒9 % and productive qualities by 8‒10 %.