First, the ventilation window should be combined with the temperature of the chicken house.
The opening of the ventilated window should be combined with the ventilation and the local temperature of the house, which is not as simple as opening all the small windows. For example, in the early stage of aquaculture, under standard negative pressure, the back end is often low due to air leakage and the air intake at the near end of the exhaust fan. At this time, we should close the small window at the back or separate it. Open one to achieve the purpose of balancing the temperature. For example, after the late boiler is stopped, the front end of the chicken house has no heat source, which causes the front end temperature to be low, and it can also close a small window in front. In short,
the switch of the small window is not only a mode, so you can make adjustments at any time according to the situation.
Second, the front ventilation should not be excessive, the later ventilation can not be conservative
It is often said that a cold is the biggest enemy of broiler breeding. The factors that cause the cold in the flock are unreasonable ventilation. A large part of the reason is excessive ventilation. If we do not have advanced instruments to measure each air index, then let it feel. . In the first 25 days, we can enter the house to master. As long as it is not stuffy, there is no problem with the ammonia smell. The primary task of the middle and early stage of our breeding is to ensure the health of the flock and not to be seriously ill. However, the ventilation is different in the later period, especially after 30 days, the principle is that it is better to be colder and not to be a little bit. 30-35 days to ensure that the upper layer chicken has a few open due to heat, 35 days later, the middle layer can not have chickens due to heat in poultry farming equipment.