STUDY OF THE INFLUENCE OF SOYBEAN PROTEIN HYDROLYZATE FOR POULTRY
For research, the feed additive Abiopeptid manufactured by "A-BIO" LLC was used - 25% solution of soy protein enzymatic hydrolyzate. The experiments were carried out in two farms of the Kaliningrad region. In the first experiment 60 laying hens of the Shaver Brown breed were drinking Abiopeptid three consecutive days at the dose of 1.5 ml per head per day. This caused a gradual increase of egg production during the week, the next two weeks egg production remained at the achieved level, during the next week of experience it decreased to the level of the beginning of the experience. The increase in productivity was accompanied by an increase of egg weight by 8% compared to the control (60 laying hens). In the second experiment two groups of laying hens of the Shaver Brown breed, 100 heads each, during the period of the beginning of the oviposition, received the feed additive in doses of 0.8 and 1.5 g/kg of feed, respectively, every day for two weeks. In the same way, the feed additive was tested on two groups of quails of 50 in each group at doses of 0.2 and 0.5 g/kg. Similar groups of laying hens and quails served as controls. The use of Abiopeptid in doses of 0.8 and 1.5 g/kg of feed by 2.3 and 5.9 times, respectively, increased the productivity of laying hens and accelerated oviposition. For quails, the minimum dose that increases productivity and resistance to stress is 0.5 g/kg of feed per day. The anti-stress effect of Abiopeptid was observed when added to feed or water in effective doses. It manifested with a delay in time and was accompanied by a cumulative effect.