Improving the protein nutritional value of the diets for farm animals and poultry by introducing oil industry waste

Today, one of the most urgent problems is finding new alternative sources of protein, deficiency of which affects the productivity of agricultural animals and poultry. On this basis, comprehensive studies on the efficiency of using the products of processing mustard seeds the Sarepta feed concentrate obtained from vegetable raw materials-were made. Before the scientific-economic experiments, the chemical composition of the studied feed concentrate and the sunflower cake traditionally used in the diets for cattle and poultry were comparatively assessed in the conditions of the Volgograd region. Superiority of the Sarepta concentrate over sunflower cake has been proven: by the content of crude protein by 5.7 %, calcium by 0.31 %, phosphorus by 0.25 %, lysine by 2.53 %, methionine by 0.39 %, threonine 0.69 %, and metabolizable energy by 0.35 MJ/100 g. The results of the research have shown that using the Sarepta feed concentrate obtained from vegetable raw materials in the diets of young cattle and poultry contributed to improving their productive qualities. For instance, the introduction of 5 % and 10 % of concentrate into the feed for broiler chickens resulted in increasing their live weight by the end of the experiment by 3.6 % and 5.5 %, respectively; introduction of 7 % and 10 % of concentrate into the diet of laying hens increased egg production during the period of experiment by 20.6 % and 12.8 %, respectively; replacement of sunflower cake with the target concentrate for feeding unweaned calves increased their live weight over six months by 2.2 %, and for fattening bull calves-by 4.4 %. Based on the results of the research, it is possible to recommend introducing the Sarepta feed concentrate obtained from vegetable raw materials into the diets of cattle and poultry with the aim of improving their productive qualities.