The effectiveness of the use of feed hydrolyzate in the poultry diet

The authors of this article evaluated the effectiveness of the use of a feed additive based on soy protein hydrolysate in combination with iodine and selenium on laying hens of the Ross Hysex Brown cross. During the experiment, the following indicators were studied: safety, live weight gain, egg production, morpho-biochemical composition of blood. At the end of the experiment, the following data were obtained: the survival rate of the bird in the experimental group was 93,3 %, and in the control group the result was 86,6 %. The weight gain of laying hens in the experimental group increased by 11 %, the egg weight (average value) by 6,5 g (12,8 %), and in the control the increase was 2,7 g (5,2 %). In the experimental group, eggs per hen were obtained by 1,87% more than in the control group, in general, the experimental group showed an increase in the number of eggs during the experiment by 23,0 %. According to the results of the morphological and biochemical composition of the blood serum of birds, there are no significant negative changes. Red blood cells did not exceed intraspecific norms, but increased in the experimental group by 26,4 %. The amount of hemoglobin in the experimental group exceeded the control by 19,4 %. White blood cells in the experimental group were 16,9 % higher than this indicator in the control group. Biochemical analysis revealed a positive trend, which was expressed in an increase in the concentration of protein in the blood of chickens of the experimental group by 8,7 %, the level of calcium by 10,9 % and phosphorus by 31,3 % in birds of the experimental group exceeds the control.