(1) The suitable temperature for laying hens: 35-33 ℃ for 1-2 days, 33-32 ℃ for 3-7 days, and then 2-3 ℃ for each week until 21-18 ℃ for 5-6 weeks. In addition to the thermometer, we should also observe the behavior of chickens. For example, when the temperature is normal, the chicks are lively, good appetite, moderate drinking water, quiet sleep, comfortable sleeping position, and most of them are in horizontal position, and the chicks are evenly distributed in the whole brooding house; when the temperature is high, the chicks stay away from the heat source, spread their wings, stretch their necks and open their mouths for breath, drink frequently, and have a poor appetite; when the temperature is low, the chicks are dense and close to the heat source as far as possible, crowded, clustered, and trembled Shaking, issued bursts of fear of cold "which Qing" sound, loss of appetite. Chickens are sensitive to cold and warm, so we should pay special attention to prevent the temperature from rising and falling, and try our best to keep the temperature balance. When controlling the temperature, the temperature should be higher at night or in rainy and snowy days; the temperature should be lower when chickens are active in the daytime and the weather is warm; the temperature of weak chicks should be higher and that of healthy chicks can be lower.
(2) Suitable humidity for layer breeding equipment: humidity is closely related to water evaporation, body heat emission and cleanliness of chicken house.
① When the temperature is high and the humidity is low, the water loss of chicken is too much, which easily leads to dehydration. In addition, due to the dry house dust, easy to induce respiratory diseases.
② When the temperature is low and the humidity is high, the house is cold and humid. The chicks are easy to catch a cold, and the bedding is moist, resulting in gastrointestinal diseases and coccidiosis.
③ When the temperature and humidity are high, the heat in the body of the chicks is not easy to be distributed normally, suffocating, loss of appetite, slow growth and weakened resistance.
It is better to keep the henhouse dry to prevent the bacteria from breeding and infection, but the relative humidity should not be lower than 40%. The suitable relative humidity is 60% - 65% before 10 days old and 50% - 60% after 10 days old. When the humidity is not enough, sprinkle water on the corridor, floor, surrounding walls or flue in the house, or put water basin on the heat source to evaporate water vapor, so as to increase the humidity in the house; when the humidity is too high, lay moisture-proof layer on the ground of the chicken house, properly increase the temperature in the chicken house, strengthen ventilation, change the bedding materials frequently in the flat chicken house, and timely remove the damp feces and bedding materials in the house, so as to prevent the leakage of the water dispenser Water, etc.
