The effect of vitamin A on feed conversion and the main nutrients of the edible portion of the carcass of bulls fed on rations malt sprouts

Abstract

The data on the influence of different doses of vitamin A on feed conversion in the main nutrients of the edible portion of the carcass of bulls fed on diets with malt sprouts are given. It was found out that in this diet it is necessary to add A-vitamin supplements, 23-24 thousand IU per 100 kg of live weight. It improves average daily gains of bulls by 11.4 %, of the weight of the carcass – by 6.0 %, including pulp by 7.2 %. The content of protein in the flesh of the carcass increases by 7.6 %, fat – by 8.8 % energy – by 8.2 %. Conversion ratio of feed protein to food protein increases by 1.23 %, of energy feed – by 0.77 %.