PRODUCTIVITY AND ADAPTABILITY OF BRIGHT DIFFERENT GENOTYPES UNDER THE INFLUENCE OF CLIMATE FACTORS

Abstract

Modern problems of sheep breeding emphasize the urgent need for thorough research aimed at further improving the existing breeds of sheep, breed groups and high-yielding types of meat and meat-wool areas of productivity in the face of climate change. An equally important approach in the selection of sheep breeds is to identify the relationship between internal indicators of their body and signs of productivity. This makes it possible to effectively use the biological reserves of sheep in the direction of increasing meat and wool productivity, as well as to obtain new data on the formation of the adaptability of animals of different genotypes in ontogenesis. Given this, the research aimed to reveal the patterns of influence of climatic factors on the productivity and adaptability of brightly different genotypes with traditional technology of sheep production. The experimental work was carried out in the production conditions of the breeding plant of the State Enterprise "Gontarivka" IT NAAS Chuguiv district of Kharkiv region, the department of selection and technological research in small livestock and horse breeding of the Institute of Animal Husbandry NAAS. It was found that the cultivation of bright in the conditions of pasture-camp content, compared with the stall-camp, despite the negative impact of outdoor air temperature, contributes to a more pronounced normalizing effect on the intensity of their growth while increasing the average daily gain by 42.0 g or 35.2 % and improving the reproductive function, due to the ability to arrive earlier than others in the hunt. It is proved that seasonal fluctuations of climatic conditions cause an increase in body temperature, respiratory rate and pulse, a gradual increase in temperature from the lower to the upper zones of the staple in runes and cause thermal differences in different topographic areas of the body surface.