Ventilation purposes:Provide the oxygen needed by the flock,Exhaust excess heat,Reduce humidity,Eliminate dust,Reduce ammonia and the temperature.
The poultry farming cage in first and second weeks were mainly insulation, and the third week began to increase ventilation and time, fourth. After five weeks, the ventilation is the main. When the ventilation and heat preservation are contradictory, the ventilation is the main one. The suitable temperature fluctuation range of the small day old chicken is small. The key to ventilation and ventilation is that there is no cold air directly blown to the body.
Basic requirements for ventilation in chicken houses: First, the chicken house check: the better the house is sealed, the better the ventilation effect
Second, the house pressure management: 13-meter-wide chicken house, brooding negative pressure should be 20-25 Pa. The negative pressure can be reduced to 10-15 Pa as the age of the chicken increases. Negative pressure is mainly required in the cold season, and summer is not required to be too high.
Third, the management of the vent; pay attention to the size and quantity of the fan to avoid excessive negative pressure, resulting in hypoxia in the house