One of the main and most diffi cult problems of modern animal husbandry is the organization of a complete feeding of young pigs at all stages of their rearing. Barley without fi lms especially naked barley is a valuable raw material when feeding pigs, therefore the study of productive activity diets, which included this culture, is important now. The researches have been carried out in the breeding farm of Large White breed in the educational and experimental farm of the Tyumen State Agricultural Academy. The data on the use in the grain composition when rearing of replacement gilts of Large White breed the grain of chaff y barley and hullless barley have been presented in the article. Digestibility of dry matter of diets containing hulless barley was 79,88 %, which by 1,23 % higher than in diets, which included grain chaff y barley. A similar regularity has been observed in the digestibility of all nutrients. The live weight of replacement gilts have been fed the hullless barley has increased by 13,7 %, the average daily live weight gain by 16,2 %, compared with the young animals, where the composition of diets has been included chaff y barley. Thus, the use of hulless barley in the diets of replacement gilts of Large White breed under the conditions of breeding farm enhanced the digestibility of nutrients of diets and live weight of young pigs.

The issues of improving the feed base of pig breeding through optimization of the composition of compound feed have been discussed. It has been noted that a distinctive feature of the varieties of hulless barley Nudum 95 is increased energy nutrition, high protein content, amino acids, macro- and micronutrients. In addition, the caryopsis of this variety is free fl owering glumes and is characterized by low fi ber content. During the study of the chemical composition of grain it has been established, compared with the chaff y barley equivalent (variety Chelyabinsk 99) the crude protein content in hulless barley variety was by 7,6 % higher than in the chaff y barley. The amount of crude fi ber and crude ash in hulless variety is lower than that of the chaff y barley in 2,1 and 1,3 times, respectively. The recipes of compound feed for young pigs during the period of rearing (PC-4), in the fattening period (PC-6) and for feeding in the second phase of fattening (PC-7) have been developed, allowing through the use of high-quality grain hulless barley variety Nudum 95 to exclude from the composition of compound feed such expensive components as soybean and sunfl ower meal. As the result is reduction in the cost of each of the recipes, respectively 1365-1293-371 Rub/t. The coeffi cients of digestibility of dry and organic matter higher in animals consuming hulless barley Nudum 95 by 7,0 % and 4,1 % respectively, crude protein by 9,6 %, crude fat by 3,1 %, nitrogen-free extractive substances by 2,1 % compared to the control group. The average daily gain of live weight of young pigs, consumed as part of the diet of hulless barley was higher by 18,4 %, while feed conversion decreased by 9,4 %.

In the composition of grain feeds a special place grain hullless barley variety Nudum 95 occupies whose distinctive feature is the high content of crude protein by 7,6 % higher than in grain of chaff y barley (variety Chelyabinsk 99). In addition, the weevil of this variety is free fl owering glumes and is characterized by a low content of crude fi ber of 2,70 % against 5,60 % in hulled grain variety. The increased feeding value of grain hulless variety resulted in the best absorption of its nutrients by the animal organism. The absolute gain in live weight of young pigs, rabbits, geese and broiler chickens of experimental groups treated with the composition of feed grain barley variety Nudum 95 was higher than in the control groups, respectively, 18,3 %, 16,0, 2,0, and 2,1 %. Identical the results have expressed of average daily gain in live weight of animals and poultry. The weight of the cooled carcasses of rabbits of the experimental group was higher compared with the control variant by 17,9 %. Preslaughter weight of goslings-broilers of the control group was less by 3,6 % than when feeding grain variety Nudum 95. Weight semi eviscerated weight and eviscerated weight of the goose carcasses in the experimental variant was higher than control by 7,2 % and 11,5 %, respectively. Broiler chickens of the experimental group had the pre-slaughter weight 1,9 % more than in the control variant. Weighing of semi eviscerated chickens has showed a signifi cant excess mass of the carcasses of the experimental group over the control by 5,7 %. Weight of eviscerated carcasses of chickens of the experimental group surpassed the control group by 3,5 %. It has been recommended for feeding farm animals and poultry to input in the compound feed grain of hullless barley variety Nudum 95.