Preservation of legumes and legume-grass mixtures with a new biological additive

Abstract

Studies have been carried out to determine the effect of seeds of varieties of coleseed (Brassica rapa L.) on the productivity of broiler chickens of the "Cobb 500" cross. According to the scheme of the experi-ment, the control compound feed did not contain coleseed seeds, 7.5% (by weight) were taken into the compound feed of the first experimental group seeds of winter coleseed of the Zarya variety, and in the compound feed of the second experimental group — 7.5% seeds of spring coleseed of the Nadezhda va-riety. The introduction of coleseed seeds into the starting and finishing compound feeds for broiler chick-ens reduced the use of soybean meal and sunflower oil by 3.7 and 4.0% (rel.). The data of physiological experience showed that the digestibility of the nutrients of the compound feed of all groups was at a high level. The digestibility of crude protein was at the control level. Lower digestibility of raw fiber by chick-ens of the first experimental group (less by 3.06%) is associated with a higher content of lignin in the seed shell of the Zarya variety. By the end of the experiment, the live weight of broiler chickens increased 66.8 times, 66.4 times and 66.9 times, respectively, according to the control of the first and second experimen-tal groups. Inclusion of coleseed seeds (7.5% by weight) slightly reduced the consumption of compound feeds by chickens of the experimental groups — by 1.43 and 1.13%, compared with the control. This was facilitated by the higher energy saturation of experimental compound feeds with coleseed seeds, contain-ing a high level of crude fat. The reduction in the use of compound feed and its lower cost affected the efficiency of growing an experienced bird. The efficiency index of poultry meat production by groups in the control was 97.62% and 113.41, 114.54% in the 1st and 2nd experimental groups, respectively.