Ventilation and cooling of poultry farms in summer

The purpose of our enhanced ventilation is to regulate the temperature and relative humidity in the poultry house and remove harmful gases in the poultry house, so as to improve the air quality in the poultry house, keep the air fresh in the house and allow the poultry to live in a suitable living environment. The air quality standards for poultry houses are: ammonia concentration not exceeding 10 mg/m3, carbon dioxide concentration not exceeding 380 mg/m3, hydrogen sulfide concentration not exceeding 10 mg/m3, and keeping the temperature in the poultry house as low as possible. Above 25°C, relative humidity is maintained at 60%-70%. Since the conditions of each poultry farm are different, the ventilation and cooling of the poultry house should adopt different methods according to the poultry breeding methods. General layer and broiler chicken breeding mostly use closed or semi-open poultry houses for cage raising and on-line rearing; duck and duck breeding mostly adopt semi-open or open-type poultry houses for ground feeding. Therefore, during the summer, in a closed condition poultry house, ventilation facilities should be used to reduce the amount of ventilation in the poultry house. If the temperature in the poultry house is too high and exceeds 28°C, the curtain should be opened. Cooling facilities to cool poultry. The amount of daily ventilation should be determined based on the outside temperature and the weight of the poultry. Under normal circumstances, the greater the weight of the poultry, the greater the amount of ventilation in the poultry house. Therefore, when the outside temperature exceeds 30°C in the summer, ventilators should be ventilated for ventilation throughout the day. The semi-open poultry house is mainly used by windows and fans to make the air in the house flow and achieve the goal of ventilation and cooling. Therefore, when the temperature is high, the windows including the skylights will be fully opened and the fans will be turned on during the day. The skylight is closed and the front window of the poultry house is fully opened. The rear window separates and opens the fan, reducing the ventilation of the poultry house. In order to maintain the ventilation of the poultry house, poultry farms using open poultry houses should try not to grow tall plants between poultry houses. In a semi-open poultry house, if the temperature in the poultry house is too high, it is also possible to sprinkle water on the corridor in the poultry house at regular intervals to use moisture to evaporate and absorb the heat in the house to achieve the purpose of cooling. In the poultry house of ducks or ducks, as far as possible, the ducks should be rushed to the bathing bath to allow the ducks to cool down. Another cooling measure is to adjust the stocking density. To avoid overcrowding affecting heat dissipation, especially caged laying hens, to reduce the stocking density to two laying hens in each cage; online broiler breeding density control 2-3 per square meter; ground rearing ducks, ducks It is controlled at 3 or less per square meter. In addition, poultry manure in poultry houses is required to be cleaned twice a day in order to more easily and effectively reduce the pollution of poultry houses caused by poisonous and harmful gases from poultry manure.

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