1.Density difference
Density determines how much heat a flock produces and how much heat it loses. A chicken’s normal body temperature is about 41 degrees. General chicken breeding density, ground feeding is not more than 10 square meters, online feeding is also generally not more than 13 square meters; No more than 16 in cage. If the ventilation equipment is not very ideal in winter, it is necessary to avoid blind expansion of density, so as not to induce diseases such as balloon inflammation, escherichia coli and ascites. The density of chicken coop should be controlled reasonably according to the climate characteristics of different seasons, and the time division cage group expansion. It should be noted that the higher the stocking density is, the greater the economic benefit will be. The stocking density should be properly controlled to ensure the health of chickens and maximize the production performance.

2.Cage layer temperature difference
Usually in the natural environment, there will be temperature difference between the cage layer of the chicken house, the upper temperature is high, the lower temperature is low, hot air rises, cold air sinks. In the practice of production, the temperature difference between the cage layer is directly affected by the way of heating the chicken house, but different. For example, the temperature difference between the upper and lower cage layer of the warm air furnace and the warm air belt heating is the largest, the temperature difference between the cage layer and the water heating fan is the second, and the temperature difference between the cage layer and the heating pipe is the smallest, especially now many modern chicken houses lay the heating pipe to each cage layer position, greatly reducing the temperature difference between the cage layer.

3.The weather temperature

Yin, rain, fog, frost, snow, wind, adverse weather has a great impact on the temperature of the chicken farm, breeding managers should pay attention to the daily weather changes, and timely adjustment:
It is cloudy and rainy to take heating facilities for the chickens in time to prevent the temperature drop in the chicken coop caused by the drop in external temperature.
Northern haze is serious, must not close the small window of the chicken coop excessive heat preservation, but to ensure mechanical ventilation, and ensure that the breeze is normal, can not cover the shed.
Frost, often hot during the day, cold at night, especially at 1-5 in the morning to pay attention to the air inlet should be appropriately reduced, at the same time to ensure the normal heating boiler work;
Snow, snow is not cold cold snow, rain and snow days to timely clear the roof of the chicken house, and appropriately improve the temperature, especially when the snow.

4.Inside and outside temperature difference
The temperature difference between inside and outside the house is mainly caused by the seasonal climate temperature difference, and the temperature difference between day and night, etc. The temperature difference between inside and outside the house should be adjusted reasonably according to the different seasons, different days and different periods of time, the ventilation volume of the chicken house, heating and cooling equipment, to ensure the relative stability of the environmental temperature in the chicken house.

5.Inlet temperature difference
In the cold season usually give up inside and outside temperature difference increasing, cold air into the inner needs and internal heat air mixed after preheating, prevent the crowd catch cold catch cold, so cold season should be paid attention to the rational use of adjustable inlet, adjust the Angle of good into the area of air inlet wind quantity, guarantee the henhouse negative pressure HeJinFeng wind speed and wind placement is relatively stable, so as to reduce the influence of inlet air temperature difference of chickens. At the same time, do a good job of airtight insulation work, to prevent thief wind and air leakage affect the temperature difference in the chicken house and then affect the health of the chickens.

6.Temperature difference between inside and outside the cage
In the production of cage inside and outside temperature difference is often easily ignored by managers, usually we measured temperature thermometer and a probe for henhouse aisle air temperature, not chickens cage temperature, especially late breeding chickens, chicken heat dissipation is bigger, and the cage space is reduced, heat dissipation is difficult, so the henhouse ventilation should be considered in a crowd physiological characteristics and the actual reasonable body feeling temperature for tunnel ventilation rate, To keep the chickens comfortable as a group

7.Somatosensory temperature difference between light and hunger
Illumination is very important in breeding management. Illumination directly affects the activity of chickens, and also affects the sense of herd temperature of chickens. Therefore, attention should be paid to appropriately increase the temperature of the chicken house by 0.5 degree when the light is off, so as to reduce the stress caused by the drop of the sense of herd temperature of chickens.
In addition, the body temperature of the chickens is different in different cases of satiation and hunger, which is more appropriate to describe hunger and cold. Therefore, the control time of material should avoid the lowest temperature period of the chicken house as far as possible, and the single control time of material should not be too long, so as to reduce the stress response of the body temperature difference of hunger to the chickens.