Abstract
Salt briquettes with the addition of crushed Siberian fir needles have been developed for cows, which were given to animals during the winter stall period. Fir needles contain a number of biologically active compounds (β-carotene, ascorbic acid, etc.), as well as a significant amount of macro and microelements (calcium, potassium, phosphorus, iron, etc.), which are important in the physiology of the animal organism. Briquettes were obtained with a size of 15 × 15 cm and a thickness of 12 cm, weighing 5 kg, which had a green tint. The greatest attractiveness of cows for licking was found in briquettes with a coniferous content of 1%. The use of salt briquettes-lizunts with the addition of needles for cows in the winter stall period has a beneficial effect on the cows' body. Animals that received salt briquettes-lizunts with needles had a lower incidence after calving and subsequently showed higher milk productivity. Calves born from these cows were more viable, were less ill and gave higher weight gain.
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