Activization of adaptogenesis and realization of meat qualities of Aberdeen-Angus bulls by biological products

Abstract

Abstract The feasibility of using Prevention-N-E, a newly developed and tested biological product, in comparison with the previously tested PS-6 preparation in the adaptive technology of keeping specialized beef cattle of imported breeding, had been scientifically substantiated and experimentally proved. Under the conditions of production tests, biopreparations PS-6 and Prevention-N-E stimulated the production of red blood cells and increased the hemoglobin concentration in the blood of bulls, that is, improved hematopoiesis; they caused physiological eosinophilia, moderate neutrophilopenia with a shift of the neutrophilic nucleus to the right and lymphocytosis; increased protein metabolism, mainly due to the synthesis of albumin and γ-globulin fractions; intensified nonspecific resistance of an organism. Against the background of the use of drugs in animals of the 1st and 2nd experimental groups, the incidence of the digestive and respiratory organs decreased by 1.4 and 2.3 times, the recovery time reduced by 3.36 and 4.88 days. accordingly, compared with the control (P <0.05). By the end of the growing period, the animals of the 1st and 2nd experimental groups exceeded in live weight control subjects by 6.6 and 9.2 kg, rearing by 10.4 and 14.8 kg, and fattening by 14.2 and 22.2 kg respectively (P <0.05-0.01). In the cuts of the carcasses of bulls of the 1st and 2nd experimental groups, there was a bigger amount of the highest grade flesh: in spin-breast - by 1.0 and 1.0 kg, in the lumbar - by 0.2 and 0.4 kg, and in the hip - by 2.3 and 4.2 kg (P <0.05-0.001), rather than in the control.