The principle of temperature for broiler birds is: high in early stage and low in late stage; low in young height and strong in young; small in high population and large in low population; high in rainy days, low in sunny days; high in night time and low in daytime. Changes in temperature should be gradually and steadily carried out in accordance with the increase in the age of young birds and the temperature conditions, and must not be erratic. The beginning temperature is higher, and the difference between the hatching temperature and the hatching temperature is too high. Otherwise, the young birds are not adapted, and the slugger is unwilling to move and is unable to feed and cannot grow normally. Usually 1-2 days old bird temperature (bird height or web height 5 cm) is 34 °C -35 °C, temperature 27 °C -29 °C. Afterwards, the temperature is lowered by 3°C every 7 days, and the temperature at 28 days is reduced to 21°C. This temperature is maintained thereafter.
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