one.Aquaculture management
First, strengthen feeding management
Comprehensive matching:
Properly handle the relationship between ventilation and heat preservation.
2, the purpose of minimum ventilation:
Minimum ventilation is mostly suitable for autumn and winter or when the temperature is lower than the set temperature, or in the premise of temperature supply, in order to reduce energy consumption and meet the basic physiological needs of the chicken to provide ventilation Its main objectives are:
(1) Provide fresh oxygen to the flocks;
(2) discharge harmful gases and dust in the chicken co
(3) discharge the excess water in the house.

The purpose of environmental control in autumn and winter is to strive to make the temperature and air quality of all areas or Spaces of the chicken coop in a comfortable ideal state. Different from other seasons, the cost and difficulty of operation are increased in autumn and winter. Sometimes affected by the environment, we need to settle for second best in air quality.

1.Adjustment of environmental control in autumn and winter:
Reasonable use of hot stove or heating and insulation equipment to provide basic temperature conditions suitable for the life and growth of chickens, with fans to provide good quality air for chickens, while minimizing dust.

2.Precautions for ventilation in autumn and winter:
(1) The fan keeps running at night and the temperature is appropriate, but the air quality in the house is still poor. The target temperature can be appropriately raised, and the frequency of frequency conversion fan can be adjusted to increase ventilation.
(2) The night fan operation cycle is too short, but the air quality in the house is acceptable, and then reduce the frequency of frequency conversion fan to reduce ventilation.
(3) The area of the air inlet and the number of fan opening tables do not match, the result is that there is local ventilation dead corner or local chicken cold.
(4) When the temperature is high in the daytime, use the fan as much as possible to help improve the feeding and growth of chickens. The fan should increase ventilation late in the morning and reduce ventilation in advance at night.
(5) Reasonable control of temperature difference in the house, if 80 meters long, 16 meters wide chicken house, temperature difference before and after 1-1.5℃ or even 2-3℃ is not a great influence, but the local temperature difference should be controlled within 0.5℃. The chickens have been in such an environment since the beginning and have gradually adapted to it. However, the local temperature difference cannot fluctuate greatly in a short time or within a day.

two.disease control and prevention
From the point of view of disease, it is mainly to strengthen the purification of provenance, which can not be ‘father debt son compensation’, through drug purification, vaccine prevention and control, breeding chicken elimination and other work.
Considering our current national conditions and the current situation of ‘father debt and son repayment’, where are the prevention and control approaches for commercial broiler chickens?
The initial lesion of the disease starts from the air sac, so let’s first understand the structure of the air sac.