Assessment of the influence of different interbreed types of sheep of the kalmyk fat-tailed breed on the natural resistance of their organism

The article examines experimental material on the influence of different interbreed types of Kalmyk fat-tailed sheep on their physiological state and natural resistance of the body. The influence of interbreed types on the physiological state of animals has been proven, so at the age of 4 months, the blood of rams of a new type of erythrocytes contains more erythrocytes compared to peers of the original type by 6.57% (P≥0.95), leukocytes – by 13.68% (P ≥0.99). During the experimental work, the advantage of the new type of rams over the original peers in terms of live weight was established (at the age of 4 months – 8.35%; at the age of 7 months – 8.38%), higher activation of metabolic processes occurring in the animals' body ( increasing the content of the studied blood parameters and its serum), increasing the production of enzymes during the functioning of their liver (urea at the age of 4 months by 17.07%; 7 months – by 17.84%; AST at the age of 4 months by 4.42%; 7 months – 6.83%). All this contributed to increasing the maintenance of the natural immunity of the body of the new type of rams.

Introduction. The presented article, aimed at studying the possibility of increasing lamb production with animals of different interbreed types, is relevant. The article examines the physiological health of animals and the natural resistance of the body of experimental lambs.

Object. Rams of the Kalmyk fat tail breed.

Materials and methods. A scientific and economic experiment was carried out; for this purpose, 70 heads of purebred mating queens of the same age were selected, distributed into two groups of 35 heads each. When forming the first group, animals of the original type were chosen, and for the second group – a new type. Subsequently, the resulting young animals (rams), 15 heads from each group, were subjected to further study.

Results and conclusions. During the experimental work, a high advantage of the new type of lambs over the original peers in terms of live weight was proven, a higher activation of metabolic processes occurring in the animals’ bodies, and an increase in the production of enzymes during the functioning of their liver. All this contributed to increasing the activation of the natural immunity of the body of the new type of lambs.

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