We studied the exchange of manganese in the body of lactating ewes of the Kalmyk breed. It was found out that during lactation, the intensity of metabolism of this element in the body of ewes of the meat-feeding direction of productivity significantly increases. The factorial method, taking into account endogenous losses, determined the daily requirement of fat-tailed ewes in manganese.
In the arid zone of the Republic of Kalmykia, based on a detailed study of the cobalt content in organs and tissues, the degree of use of this element from diets, and taking into account endogenous losses, the norm of the need for single ewes of the meat-bearing direction of productivity in cobalt is calculated. It was established that cobalt from the diets of single ewes of the meat-bearing direction of productivity of the Kalmyk fat tail breed is assimilated by 56.14%. Given this circumstance, they should receive 0.80 mg of this element in the daily diet. Based on 1 kg of dry matter of the diet, the need for cobalt is -0.50 mg, and calculated per 1 kg of live weight, 0.01 mg.
In the physiological experience carried out in the conditions of the peasant farm of the Republic of Kalmykia, the influence of different levels of zinc in the diet, the use of calcium, phosphorus and sulfur diet of pregnant ewes of meat-sucking productivity direction has been studied.
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