Evaluation of the productivity and quality of meat in bulls kept by ecological-adaptive technology using natural bioactive substances

The article proves the effectiveness of combined administration of natural bioactive substances to animals at the beginning of the growing, rearing and fattening periods according to the schemes developed by us, taking into account regional biogeochemical features. In this perspective, scientific, economic and laboratory studies were carried out on 30 bulls-analogues, divided into 3 groups. Experimental animals from 2 to 150 days of age were kept according to ecological-adaptive technology, then up to 540 days (duration of studies) - according to bioindustrial technology. The bulls of the experimental groups aged 2, 31, 151, 361 days of life were used permamic with polystim or with iodomidol. The age dynamics of physiological, clinical and growth parameters, as well as the quality of meat were studied in animals of the compared groups. In the simulated experiments, it was shown that the administration of permamic to bulls with polystim or with iodomidol was accompanied by an equivalent somatotropic effect of the body. At the same time, the meat samples had similar organoleptic, biochemical, microbiological and spectrometric characteristics.