The effect of humic and fulvic feed additives on restoring reproductive function and reducing the risk of subclinical mastitis in cows

The article presents the results of a scientific and economic experiment to determine the effect of a feed additive containing humic and fulvic acids, "Reasil Humic Health", on the restoration of reproductive function and a decrease in the risk of subclinical mastitis in cows. The feed additive "Reasil Humic Health" is made from the natural substance leonardite. Leonardite is a product of humification of the ancient plants. To conduct the experiment, the dairy production of the agricultural production cooperative "Red Star" of the Isaklinsky district of the Samara region was determined. The experiment was carried out on 4 groups of animals from among the productive livestock (control, experimental-1, experimental-2, experimental-3) with 15 each. During the dry period, the cows from the experimental groups received, in addition to the main ration, the feed additive "Reasil Humik Health" in doses of 60.0 g for experimental group 1 animals, 80.0 g for experimental group 2 animals and 100.0 g for experimental group 3 animals, respectively. During the milking period, the experimental animals were fed the feed additive "Reasil Humik Health" in the dosage of 80.0 g for experimental group 1, 100.0 g for experimental group 2 and 120.0 g for experimental group 3. The feed additive was administered daily during the specified physiological periods during the morning feeding. The control group of the animals was on the main ration and received the feed mixture without the additive. The results reliably confirmed that the use of humic acids as a feed additive "Reasil Humic Health" in the amount of 80.0 g per head per day during the dry period and 100.0 g per head per day during the milking period in the diets of the cows reduces the degree of manifestation of subclinical mastitis, and also contributes to the restoration of the reproductive function of highly productive animals after calving. The changes in the studied parameters in the experimental 2 and experimental 3 groups did not differ reliably.