Closed chicken houses are also known as completely closed windowless houses. In this chicken house, roof and wall insulation is good; no windows surrounded, the environment inside mainly is adjusted through artificial or instrument control, resulting in chicken house "artificial climate", so as close as possible to the most suitable chicken physiological function of the need. The specific advantages are as follows:

1. The environmental condition is controllable, accord with the physiology and production needs of chickens. The environment of chicken house is stable and not easily affected by the natural environment. The production is more stable and safe. The growth, sexual maturity and egg production cycle can be controlled through man-made control to achieve high quality arrangement of flocks. Such as restricted feeding, forced moulting and so on.

2. Standardization. Generally a lot of money need to be invested for chicken house construction, number of chicken raising is more than 10000, per unit area can raise more chickens and land can be much better used. The growth and development of chickens in general can be controlled according to the standards of chicken breeding, the production of products can meet the standards promulgated by the state.

3.Save manpower and reduce feeding costs. The ventilation, lighting, humidity, and even feeding, drinking water, epidemic prevention of closed chicken house are controlled by mechanical, electronic man-made , which will reduce the production of manpower required. At the same time, due to advanced equipment, the artificial waste of feed will be greatly reduced, thereby increasing production efficiency while reducing the cost of feeding.

4.Good Isolation and disinfection, reduce the cross-contamination. because closed chicken house isolated well from the outside world, the possibility of pathogenic microorganisms outside the house entering inside will be reduced, while the chicken house sterilization can be controlled in a certain space. Thereby the chance of cross-contamination will be greatly reduced, which is conducive to disease prevention and control, especially the major animal diseases.

5.Good control of diseases and low-cost medicine. Closed chicken house due to low cross-contamination, the environment inside the closed chicken house can be well controlleed, the chickens can hardly affected by the outside world, so probability of disease occures is very low. Compared with other types of chicken house, if chickens infected with the same disease, due to good internal environment, the mechanization of medication makes the drug used more scientific, so treatment is also easier and treatment costs are lower.

6.Grow normally in extreme environment. In extreme environments, such as high temperature, cold, high humidity, etc., environment inside closed chicken house can be completely controlled by human with consuming a lot of energy, no matter what kind of extreme environments. And thus chickens can normally grow even in the extreme environments.

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