There are many places to pay attention to raising chickens. For broiler cages, it is the most basic requirement to understand the ventilation. Determining the amount of ventilation in a chicken battery cage for broilers is not a simple matter. The best option is to balance the performance of the flock and the cost of keeping the house. Because if the amount of ventilation is too small, the quality of the air and litter in the house will be poor, which will affect the health of the flock and the performance of the flock. However, if the amount of ventilation is too large, a thief wind will form in the house, and the cost of keeping the house will increase. Below, we will discuss the issue of the minimum ventilation mode of broiler cages.
Farmers know that it is essential to create suitable humidity and temperature conditions for broilers, so farmers must maintain good ventilation to achieve the right temperature and humidity. At present, the ventilation of the house is divided into natural parts and mechanical ventilation. Two. Natural ventilation is the use of windows, under the influence of natural wind and temperature difference. In the northern region, the total window area is generally about 1/3 of the building area. The general window should be symmetric and evenly distributed. In order to adjust the ventilation, the window can also be made into two rows, and some windows are switched according to the ventilation requirement.
Mechanical ventilation is the main method for regulating the environmental conditions in the closed house and broiler chickens under high density and large group feeding conditions. Ventilation is closely related to temperature control, humidity control, dust removal and air conditioning. There are two main types of mechanical ventilation for contemporary broiler closed houses: horizontal ventilation and longitudinal ventilation.
Lateral ventilation. When the length of the house is short and the span does not exceed 10 meters, horizontal ventilation is often used. The horizontal ventilation mainly has two designs of positive pressure system and negative pressure system. The most common application is the negative pressure ventilation system. The most used in production is through ventilation. That is, the fan is installed on the side wall, and the air inlet is provided at the corresponding part of the opposite wall of the fan. After the fresh air flows in from the air inlet, it passes through the transverse diameter of the chicken house and is discharged outside the house. This ventilation design requires that the exhaust air
volume is slightly larger than the air intake amount, so that the air pressure inside the house is slightly lower than the air pressure outside the house, which is beneficial to the fresh air outside the house to automatically flow into the house under the influence of the negative pressure.
Longitudinal ventilation. When the length of the battery cage for broilers house is longer than 80 meters and the span is more than 10 meters, longitudinal ventilation should be used. It means that the fan is installed on the side wall of the broiler house, and the air inlet is set on the wall opposite the fan or the wall on the opposite side of the gable, so that the fresh air is discharged under the negative pressure and penetrates into the longitudinal path of the house. Outside the house. In the summer high temperature season, in order to effectively cool the house, it is usually necessary to install a wet curtain at the air inlet, that is, the wet curtain cools down. Because the vertical ventilation system of the chicken house has the advantages of simple design and installation, low cost, good ventilation and cooling effect, it is widely used in the current chicken production.