In the issue of changes in the reproductive ability and morphobiochemical blood parameters when using a coniferous energy supplement in feeding black-and-white cows

The paper presents the results of studies on the effect of a fodder coniferous-energy additive on reproductive capacity, biochemical and morphological status of the blood of black-and-white cows in the first hundred days after calving. The scientific and economic experiment was carried out by employees of the Department of Animal Science and TPPZ of the Institute of Applied Biotechnology and Veterinary Medicine of the Krasnoyarsk State Agrarian University in the conditions of the Mikhailovskoye Federal State Unitary Enterprise of the Uzhursky District of the Krasnoyarsk Region. The aim of research is to study the effect of a coniferous energy supplement on the hematological and reproductive qualities of dairy cows. The coniferous energy feed additive developed by the employees of OOO STC "Khiminvest" (Nizhny Novgorod) contains biologically active substances, vitamins B1 – 0.17 mg/kg, B2 – 13, B3 – 2.3, B5 – 0.29, B6 – 0.1, folic acid – 0.7 mg/kg, carotenoids – 13.5 mg/100 g; energy value – 250 kcal/100 g. The use of the additive contributed to an increase in the hemoglobin content up to 106.3 g/l, erythrocytes up to 7.2, • 1012 /l, total protein up to 83.2 % g/l, at P> 0, 95. The duration of the service period decreased by 5.3 % and the insemination index decreased by 0.12 %. The feed additive helped to increase the resistance of the animal organism to the effects of unfavorable factors. Under the existing conditions of feeding and keeping in FSUE "Mikhailovskoe" of Uzhursky District of the Krasnoyarsk Region, black-and-white cows without coniferous energy additives or at low doses (100 g) reduce their natural resistance and increase the likelihood of contracting infectious diseases.