Biochemical blood status and reproductive capacity of black- mottled cattle using phytoadaptogens

The purpose of research is to study the biochemical parameters of blood and the reproductive ability of heifers and first-calf cows of the black-and-white breed using phytoadaptogens. On the basis of the Prigorodnoye educational farm in the Altai Region, three groups of heifers of 20 heads each were formed. The control group of animals received the basic diet, the 1st experimental group - cranberry meal extract (containing 40 % ursolic acid), at a dose of 250.0 mg per head per day, the 2nd experimental group - a two-component composition: 200.0 mg dry Rhodiola rosea extract and 250.0 mg of cranberry meal extract per head per day. The heifers were fed phytoadaptogens a month before the upcoming insemination, for 20 days; heifers - at 3 and 7 months of pregnancy for 10 days; for first-calf cows - within 20 days immediately after calving. Cranberry meal extract was obtained at the Institute of Organic Chemistry named after N.N. Vorozhtsov containing 40 % ursolic acid, dry extract of Rhodiola rosea contains 3 % salidrosides. The use of phytoadaptogens from regional raw materials (cranberry meal extract and dry extract of Rhodiola rosea) in the feeding rations of heifers and first-calf cows helps to mobilize metabolic processes and energy resources in the animal’s body, manifest an anabolic effect, and reduce the functional load of the liver. The most significant metabolic effect and improvement in reproductive function were obtained using a two-component composition as a manifestation of the synergistic effect of biologically active substances of phytoadaptogens.