The intensity of growth and development of young laying hens when including probiotic additive “Profort” into their diet

To study probiotic feed additive "Profort", the following goals were set: to study the effect of the drug on the energy indicators of growth and development of internal organs of egg-type chickens. The objectives of the study were the determination of average relative and absolute gains, chickens’ safe keeping; the analysis of the results of control slaughter of egg-type chickens. The experiment was conducted in the conditions of a poultry farm of PFF" Krasnoe Podvorye "of Belgorod Region on the chickens of egg direction of the cross" Czech Dominant", from the age of 116 days. Two groups of young birds, 1000 head each, similar in terms of breeding time, breed and weight, were selected for scientific experiment. . The chickens were kept in the same poultry house, in different cell batteries with nipple drinkers and without restriction of the access to dry full-ration feed, calculated according to the needs of the bird during a certain growth period. The control group received the main diet. In experimental group the birds together with the main diet received probiotic feed additive "Profort" in the dose of 0.5 kg per 1 ton. Processing of the research results was carried out according to established methods. Satisfactory effect of feed additive "Profort" on the changes in the growth energy indicators of egg-type chickens was noted. The study of live weight gains showed positive increase in values during all the study periods of the development. The safety of young chickens of egg direction for the period of 116 days was 95.5 % in experimental, 92.5 % in control groups.