Influence of a mineral complex additive on the incubation qualities of eggs

The article presents an analysis of the effect of feeding a mineral complex supplement based on local raw materials in feeding laying hens of the «Ross 308» cross on the incubation qualities of eggs. The studies were carried out on the basis of LLC "YeniseyAgroSoyuz" of the Sukhobuzimsky district of the Krasnoyarsk Territory and the animal farm of the Institute of Applied Biotechnology and Veterinary Medicine of the Krasnoyarsk State Agrarian University. The studies were carried out on 4 groups of laying hens of the "Ross 308" cross (1 control and 3 experimental). Laying hens from the control group received a balanced basic diet (ОR), compiled according to the VNITIP standards, and mineral complex additives based on local unconventional raw materials (oxidized brown coal, vermiculite, peat, belite sludge in various combinations, in general amount from 1,5 to 2,1 %), the grain portion and the premix remained unchanged. It was found that the inclusion of a mineral complex additive in the diets contributed to a significant increase by 2,0-5,4 % of the hatchability of chickens. The maximum positive effect on incubation qualities and hatchability was observed in the third experimental group, when 2.1 % of a mineral complex supplement was included in the diet of laying hens, containing 0.4 % oxidized brown coal, 0,4 % vermiculite and 0,4 % belite sludge. There was a significant increase in the incubation qualities of eggs in the third experimental group in comparison with the control, in which the maximum fertilization rate was - 94,7 %, the hatchability of eggs was - 96,46 %, the number of chickens from the number of laid eggs was - 91,33 %, with an average weight eggs - 59,6 g. The highest egg-laying rate was found in the third experimental group and amounted to 164,18 %.