Biological effect of complex feed additive on blood status and productivity of dairy cows

Data on the evaluation of the effectiveness of the complex mineral supplement of the Volgograd deposit in the diets of lactating cows are presented. The results obtained in the studies showed that the feed additive of natural Volgograd bischofite to diets deficient in magnesium content, allows you to significantly increase the average daily milk yield of experimental cows, improve its quality indicators in terms of fat and protein content. At the same time, the tested complex feed additive had a positive effect on morphological and biochemical indicators of the blood status of dairy cows.

Introduction. Determination of the effectiveness of the use of a natural complex mineral supplement from the Volgograd deposit when feeding lactating cows.

Materials and methods. In the studies, the influence of the complex mineral supplement of Volgograd bischofite was established on morphological and biochemical indicators of the blood status of dairy cows, their productivity and quality indicators of milk produced in terms of fat and protein content. Experimental work was carried out on lactating cows of the red steppe breed. Of these, two groups were formed, the first - control and the second - experimental. In the diets of experimental cows, a deficiency in the content of a vital mineral element, magnesium, was revealed. This shortcoming was filled for the second experimental group by introducing natural Volgograd bischofite into the diets.

Results and conclusions. According to the research results, feeding the test complex mineral supplement had a positive effect on the blood status and productive qualities of dairy cows. Thus, compared with analogues of the first control group, in the blood of animals of the second experimental group, the number of erythrocytes and hemoglobin content increased by 7.40% and 2.05%, respectively, which indicates an increase in the work of the hematopoietic organs in them and a higher level of intensity of redox processes in the body. In cows of the experimental group, the content of total protein in the blood serum was higher by 1.87% and albumin - by 2.42% than in the control. In the experimental group, an advantage in average daily milk yield of 7.74% was also established, the content of fat in it by 0.05% and protein by 0.02%.

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