IMPACT OF BIOLOGICALLY ACTIVE SUBSTANCES ON THE UTERUS INVOLUTION AND DATE OF THE FIRST SEXUAL HUNTING AFTER CALVING

Abstract

The aim of the researches was to improve the reproductive capacity of cows by accelerating the uterus involution after the use of a complex substances mixture of neurotropic-metabolic action (L-arganine (C6H14N4O2), sodium succinate (Na2C4H4O4), sodium glutamate (C5H8NNaO4)) and trace elements nanocarboxylates (Fe, Ca, Mn, Cu, Zn)) in the first decade of the postpartum period. The experiment was conducted on cows of the Ukrainian black-spotted dairy breed. One control and three experimental groups were formed, 10 animals in each group. Animals of the first experimental group were injected into the caudal fold in a volume of 10 ml once a day for 6 days from the fifth day after calving, the total volume of the drug was 60 ml. Animals of the second experimental group were injected the drug in a volume of 20 ml once a day for 3 days on the fifth, seventh and ninth days after calving, the total volume of the drug was 60 ml. Animals of the third experimental group were injected the drug in a volume of 20 ml once a day for three days on the seventh, eighth and ninth days after calving, the total volume of the drug was 60 ml. Animals in the control group were not injected the drug. It was found that the use of a complex substances mixture of neurotropic-metabolic compounds with nanocarboxylates of trace elements has a positive effect on the timing of uterine involution in cows and their first arrival in sexual hunting after calving. Thus, the injection of the complex according to the scheme of the second group reduces the involution of the uterus by 2.3 days (P - 0.01) and reduces the independence period by 3.4 days (P - 0.05). Injection according to the scheme of the third experimental group accelerates the involution of the uterus by 2.1 days (P - 0.05) and reduces by 2.5 days (P - 0.05) the period from calving to the onset of the first sexual hunt. The scheme in which animals were injected within six days after calving (the first experimental group) in a volume of 10 ml from the fifth day was less effective and more time consuming

Keywords

• nanocarboxylates
• reproduction
• neurotropic-metabolic compounds
• injection
• caudal fold
• independence period
• food acids