The main characteristics of the performance of caged broilers are: First, the problem of temperature difference between the upper and lower layers needs to be solved. The solution to the temperature difference between the upper and lower layers is to install a diversion fan on the ceiling of the chicken house to control the temperature difference between the layers within 1 °C. The second is the question of whether the oxygen supply in the chicken house is sufficient. The effective measures to improve the intermediate oxygen supply are the wind speed of the air inlet and the uniform wind window. At the same time, it is necessary to avoid the danger of wind speed on the cold wind of chickens on both sides. The precautionary measure is to use the deflector to control the falling into the aisle when the cold wind blows down, so that the oxygen supply reaches the intermediate cage. Stable and balanced negative pressure ventilation is the key to the success of caged broiler breeding, and it is also the key to oxygen supply in the middle cage and cold air protection on both sides of the cage. There are two points in the negative pressure ventilation. One is to ensure sufficient oxygen supply in the middle of the house. The second is to ensure that the air in the chicken house is fresh. Negative pressure ventilation is a ventilation method that first pulls out the dirty air and then the fresh air comes in again.
Pay attention to the standard of the use of the poultry battery cages, to give the chicken a comfortable growth environment, will bring greater economic benefits.
The main point of routine ventilation management for broiler cages is to strengthen the relationship between temperature and ventilation management: to ensure that the temperature is suitable and constant, no significant temperature difference between day and night is the management point of temperature. The ventilation principle is that it can be ventilated when it is higher than the appropriate temperature. It is also irrelevant to increase the wind speed appropriately. If the temperature is suitable, there is no wind speed. At all times, ensure that there is sufficient oxygen supply and no odor in the house; the standardized broiler farm can be ventilated in the early stage or at the appropriate temperature, but no wind speed will be achieved. In the case of high temperature or late feeding period, in order to ensure sufficient oxygen supply and reduce the rate of late death, there must be a certain wind speed to meet the needs of cage broiler growth.
In principle, the amount of ventilation should be done in the following way: First, the coldest December and January, use the minimum ventilation. In other periods of winter, it is also necessary to increase the minimum ventilation by 1/3 to 1/2. Second, ventilation management should be carried out at 2 times the minimum ventilation in autumn and spring. Third, ventilation in summer is no problem. Fourth, the minimum ventilation that is usually calculated may be insufficient for the current broilers, because the growth rate of broilers is now much faster than the standard of this standard. Make sure the flocks are evenly distributed. In terms of temperature control, it is better to have no accumulation of chickens.