EFFECT OF PREPARATIONS TOXIFIN AND CELLOVIRIDIN G20Х ON PRODUCTIVITY AND PERFORMANCE OF FATTENING BULL-CALVES DIGESTION IN THE TECHNOGENIC AREA
There is a good scientific basis for effective detoxification of heavy metals in the body and meat products of fattening bull-calves due to the rational use of dietary feed adsorbents. At the same time, many new generation adsorbents often show synergistic effect with a wide range of feed biologically active additives. The aim of the research is to determine the effect of the adsorbent toxifin and MEC celloviridin G20x on the economically valuable features, digestibility and retention of dietary nutrients of fattening bull-calves in the technogenic area of RNO - Alania. To achieve this aim, the objects of the research were the Swiss bull-calves, which at 6 months old by the analogue scale were divided into 4 groups of 10 heads each. The digital material obtained in the course of the research was statistically processed by Student’s t-test. It was found that in the technogenic area of North Ossetia-Alania it is suitable the combined introduction of MEC celloviridin G20х at a dose of 70 g/t and adsorbent toxifin at a dose of 1 kg/t feed into diets of fattening young cattle in order to detoxify heavy metals, improve economically valuable performance of digestibility and use of nutrients. Under the effect of the combined dietary supplementation of MEC celloviridine G20x and adsorbent toxifin the bull-calves in the third test group significantly (P<0,05) exceeded their counterparts of the control group in gross and average daily live weight gain by 11,03%. Animals of the third test group versus the control group had significantly (P<0,05) higher digestibility coefficients of the dietary dry matter by 3,69%, organic matter - by 3,59%, crude protein - by 4,03, crude fiber - by 4,0% and nitrogen-free extractive substances - by 3,95%. The fattening young animals of the third test group showed the improvement of protein metabolism in significantly (P<0,05) 5,93 g more daily nitrogen deposition in the body.