| Abstrakt: |
The results of studies of the temperature-humidity regime of the air in the barn of the frame type intended for large-group unleaded boxing retenon of lactang cows under the acon of low ambient air temperatures are presented. It was found that the temperature does not meet hygienic standards due to the low ambient temperature, floor temperature and manure ducts, lier box for resng cows, interior equipment, feed and water in the frame barn. A significant decrease in air temperature to - 0.39 - (-2.62 0C) was registered in cowsheds during the night hours, which was accompanied by an increase in relave humidity to 75.6 - 76.2% and ammonia content to 25.0 - 33.7 mg / m3. Negave indicators of the temperature of the floor, the interior equipment, as well as the feed mixture in the night and morning hours in the studied barns were established, the value of which averaged - 0.43- (-) 6.6 0C. In the majority of cases, the speed of air movement in frametype cowsheds is hygienic, but as revealed by night-me research is much lower than in the aernoon, which is due to technological operaons - movement of transport and movement of animals. The temperature of the surface of the lair in the boxes for resng animals at low ambient air temperature during the day varied from - 1.6 to 7.0 0C and during the night and especially in the morning hours acquired negave values, different from similar indicators in the aernoon. Obtained data on the temperature and humidity regime in frame cowsheds designed for large-group unattached boxing retenon of lactang cows should be used to opmize the microclimate in buildings under the acon of low air temperatures. [ABSTRACT FROM AUTHOR] |
