Metabolism indices of Black Pied Holstein cows when using a natural mineral supplement

Abstract

Obtaining safe and high-quality dairy products from cattle remains an important task in modern livestock farming. The use of natural mineral feed supplements processed according modern techniques and enriched with biologically active substances (vitamins and amino acids) may help solve these problems. The research goal was to study the indices of protein, carbohydrate and lipid metabolism of lactating and dry Black Pied Holstein cows when a natural organo-mineral supplement was included in the diets. The production experiment was carried out in 2023 and 2024 on the farm of the AO “Uchkhoz Prigorodnoe” on 200 cows of the 2nd and 3rd lactations, dry and lactating ones which, in addition to the basic diet, received a natural organo-mineral feed supplement containing macro- and micronutrients including silicon, and enriched with vitamins and amino acids, 200.0 g per head. The feed supplement was introduced into the diet three times for 14 days two weeks apart. Feeding highly productive lactating cows with a natural organo-mineral supplement avoids hepatotoxic effects and increases the protein-synthetic function of the liver providing the body with a sufficient amount of milk precursors. In dry cows, a profound effect of a natural organo-mineral supplement on the level of anabolic processes and the activity of gluconeogenesis enzymes which promoted the synthesis of energy substances necessary for the formation of the fetus was revealed. In lactating and dry cows, the feed supplement induced increasing calcium and phosphorus levels in the blood.