Characteristics of blood morphological composition of dry and lactating cows when using a feed supplement based on natural minerals

Abstract

Currently, in the production of livestock products, biologically active substances are used as part of feed supplements and premixes to correct metabolic processes, neutralize and biodegrade toxic substances supplied with feeds. The research goal is to study blood morphological composition when an organomineral supplement based on silicon-containing zeolites obtained by enzymatic hydrolysis and enrichment with a complex of amino acids is included in the diets of dry and lactating Holstein Black Pied cows. The studies have shown that the use of this supplement in the diets of dry and lactating Holstein Black Pied cows does not cause a negative behavioral reaction in animals. Dry cows exhibit a physiological need for the feed supplement when it is used repeatedly. The biologically active components of the feed supplement have a hematopoietic effect and help increase the white blood count by 7.55%, red blood cell count - by 31.15%, platelet count - by 35.74% in dry cows; Hb level increased by 11.36% (P ≤ 0.05) as compared to the control group. In lactating cows, there were increased RBC and platelet counts by 13.69% (P ≤ 0.05) and 8.45% (P ≤ 0.05), respectively; and Hb level - by 9.2% (P ≤ 0.05). The WBC did not change significantly.