In practice production, temperature, humidity, ventilation, these three points are chicken farm management. Especially temperature, different seasons, weather, chicken house design insulation, boiler heating equipment, feeding mode, feeding density, cage structure will cause a certain chicken house temperature difference.

At the same time, the improper adjustment of the inlet of the hen house, the wind speed of the inlet, the negative pressure is unreasonable, the influence of the inlet drop point and other factors will also cause the increase of the temperature difference in the hen house. Temperature difference is too large chickens are prone to cold and cold induced respiratory tract and digestive tract diseases, resulting in poor yolk absorption of chicks, at the same time affect immune function, reduce antibody generation and humoral immunity, leading to immune suppression of chickens, resulting in reduced resistance to disease of chickens, disease occurrence.

Temperature difference include: natural seasonal climate temperature difference, temperature difference between day and night, chicken temperature difference, temperature difference between day age, abdominal back temperature difference and density difference in temperature, expansion of temperature difference, cage inside and outside temperature difference, temperature difference between inside and outside, inlet temperature, the temperature difference, cage layer temperature, the temperature difference before and after the henhouse, temperature difference, in temperature difference and wind speed body feeling temperature, humidity, body feeling temperature, light body feeling temperature difference, hungry body feeling temperature difference, etc.