FLAMMABILITY AND PRODUCTIVE QUALITIES OF HARVESTING CATTLE AT DIFFERENT LEVEL OF ATMOSPHERIC PRESSURE
The aim of the research was to study the fertilization and productivity of heifers and cows of the red steppe breed at different levels of atmospheric pressure, the gradations of which were: 725-750 mm.Hg.art., 751-775, 775 and more mm.Hg.in the days corresponding to the specified limits of atmospheric pressure, insemination of cows and heifers was carried out, milk yield was controlled and the chemical composition of milk was studied. It was found that in days with atmospheric pressure 751-775 mm.Hg.art. both heifers and cows showed the greatest fertilization from the first insemination (61,1 and 58,0%, respectively) than on days with high atmospheric pressure. When insemination in those days was the maximum level’s barrenness. The highest daily milk yields of cows differed in the days of lactation, when the level of atmospheric pressure did not exceed 775 mm.Hg.the Superiority of productivity over the yield obtained in periods with the maximum level of atmospheric pressure, 3, 3,1-3,6 kg (P>0,99-0,999). According to the content of dry matter and the main components of milk, the same trend was observed. As a result of the conducted researches it can be stated that fertilization and productivity of red steppe cattle is characterized by maximum values only at comfortable values of atmospheric pressure (751-775 mm.Hg.art.).