Eteri I. Rekhviashvili, Svetlana A. Grevtsova, Rustem B. Temiraev, Taladin N. Kokov, Valentina S. Gappoeva, Zinaida G. Khabaeva, Bella S. Nikkolova, Sofia F. Lamarton, Albina R. Gagloeva
In biochemical processes, selenium and vitamin E play the role of antioxidants, increasing the immunobiological reactivity in the body. Their use serves to increase the poultry productivity. There is a positive experience of combined use of antioxidants and probiotics in poultry diets. The research aims to study the effect of sodium selenite and vitamin E in combination with probiotic Bifidum SHG on nutrients digestibility and accessibility in mixed feed of replacement young and layers. Research methods. The objects of research were young and layers of cross “Smena-7”. During the first stage of scientific experiment using the replacement young the day-old chicks by the analogue scale were divided into 5 groups of 200 birds each. After 22-23 weeks of growing, the experimental poultry was relocated to the layers workshop. During the second stage the same as in the first stage of the experiment flock was used. Research results. In the course of the first physiological experiment the young of the fourth test group feeding the mixture of these preparations has provided the best digestion of organic matter for 2,90%, crude protein – 3,10%, crude fiber – 3,40% and nitrogen-free extractives – 3,10%. Inclusion of the same supplement mixture into the mixed feed allowed during the second exchange experiment the layers of the fourth test group regarding the control to increase the digestibility coefficient of organic matter by 5,00%, crude protein – by 4,80% and nitrogen-free extractives – by 5,00%. Probiotic supplementation along with tocopherol and sodium selenite provided for the young of the fourth test group greater by 16,2% nitrogen deposition per day in their bodies. Feeding antioxidants in combination with probiotic had a stimulating effect on the transformation of feed nitrogen into egg mass nitrogen. The most effectively these preparations influenced the ovogenesis process of layers in the fourth test group, who contained 26, 92% more nitrogen in their eggs. Keywords: young, layers, antioxidants, probiotic, digestibility and accessibility of nutrients.