Increase the productivity of animals and poultry when use non-traditional feed and mineral additives

Abstract

The possibilities of increasing the productivity of animals and poultry when using an additive containing selenium, rapeseed cake and a complex mineral additive have been studied. Adding to the feed of selenium-containing drug “Carasel” enhanced the digestibility of nutrients, increase of erythrocytes, hemoglobin in the blood, yield of certifi ed goslings, and profi tability. The digestibility of dry and organic matter has increased by 0,46–1,14 %, protein – up to 5,15 %. Depending on the dose of the additive the digestibility of raw fi ber, raw fat, and nitrogen-free extractive substances were higher. Certifi ed goslings have been received 19–22 % more. The inclusion of rapeseed cake of Siberian selection in compound feed when rearing goslings had a positive eff ect on the growth of live weight, the output of the gutted carcass. Goslings of the 1st experimental group exceeded the live weight of goslings of the control group by 3,4 %, and the 2nd experimental group by 6,1 %. The weight of the semi-gutted carcass was higher in the experimental groups receiving rapeseed presscake and rapeseed presscake in combination with rapeseed oil, and exceeded the weight of carcasses of the control group by 298,22 and 388,48 g (P ≤ 0,001), respectively. The weight of gutted carcasses was also significantly higher in the experimental groups. A complex mineral additive in the ration of steers of Hereford breed contributed to the increase in their live weight at the age of 15 months, slaughter yield, profitability of production and improvement of beef quality. The pre-slaughter weight of steers in the experimental group was 465,67 kg and was by 19,0 kg or 4,25 % more than that of steers in the control group (P ≤ 0,001). Studies have shown that the carcass weight was higher in the experimental group than in the control group by 12,09 kg or 4,39 % (P ≤ 0,001). The slaughter yield was 1,08 % higher. Economic evaluation of the use of feed additive in the experiment in the steers of Hereford breed has shown that the use of the developed mineral feed additives contributed to the increase in live weight of steers and the profi tability of production. The level of profitability in the group of steers experimental group receiving comprehensive mineral additive amounted to 13,80 % in comparison with the control group where it was equal to 9,40 %.