Biological rationale of cobalt demand in single ewes’ sheep of Kalmyk breed

Abstract

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.