HEMATOLOGICAL PARAMETERS AND MICRO BIOCENOSIS GASTROINTESTINAL TRACT OF CALVES FED WITH THE FEED ADDITIVE “LAKTUR”
Abstract
In the last decade the concept of probiotics has undergone significant changes. It shows increasing attention of researchers in structural components and metabolic products of probiotic microorganisms. These changes are associated with the extension of the concepts of biological effectiveness of probiotics and detecting the fact that the structural elements of the cells and their metabolites in many cases are at least equally effective. Feed probiotic preparations are widely used in animal husbandry practices, allow improving the existing system of modern rational animal feed. Lactic acid bacteria, streptococcus bacteria and Bacillus subtilize, a part of the enzymatically-probiotic feed additive “Laktur” mobilize useful synthesis of biologically active components in the body, inhibit the growth of opportunistic pathogens, restore normal intestinal microbiocenosis and contribute to the prevention of gastrointestinal diseases of animals. Hematologic studies revealed that the feed additive “Laktur” through a variety of functions has a positive effect on erythropoiesis calves. Thus, the number of erythrocytes in the blood of calves treated with the feed additive “Laktur” in a dose of 1.25 kg/ton by weight of the concentrated feed was more than the control animals at 8.24 % (P < 0.05), hemoglobin – 8, 23 % (P <0.05), residual nitrogen – 17.28 at%, the content of the inorganic calcium and phosphorus – and 17.35 to 8.23 %, respectively. The level of albumin fraction was larger in this group compared with the control to 3.07 %. Microbiological studies of feces in calves 120 days of age showed that the gut contents of animals fed probiotic feed additive “Laktur” lactobacillus dominated. Thus, in calves feces receiving feed supplement “Laktur” in a dose of 1.25 kg/t, the number of lactobacilli was 8,690,000 cfu/g, at 3.23 million CFU/g, or 59.16 % (P < 0.05) than the control group. Also, in experimental groups of calves feces increased amount of bifid bacteria and averaged 4,350,000 CFU/g, which is 46.96% more than the control group. Meanwhile, the number of E. coli in the intestine of calves content decreased and the experimental groups averaged 4.32 million CFU/g, which is 65.28 % lower compared with the control.
