Chicken house "gas environment" solution
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July 20 13:20:51, 2025
In intensive chicken farming, harmful gases like ammonia, carbon monoxide, hydrogen sulfide, and carbon dioxide are continuously produced inside the poultry house. Especially during winter, when ventilation is reduced for warmth, these gases can accumulate, leading to serious health issues such as respiratory diseases in chickens. In extreme cases, this can result in high mortality rates. Therefore, implementing effective technical measures to control these harmful gases is crucial for maintaining the health and productivity of the flock.
Proper construction of the chicken coop is essential. It should be located on elevated ground with good drainage and natural airflow. Avoid building in low-lying or waterlogged areas, as this can lead to dampness and poor air quality. The floor should be made of concrete for easy cleaning and disinfection. Additionally, planting vegetation around the area can help improve the microclimate by reducing dust and filtering pollutants.
Maintaining cleanliness and dryness is vital. The area around the chicken house must be kept clean, and waste, feces, and sewage should not be allowed to accumulate. Dead birds should not be discarded randomly but disposed of properly. Inside the house, regular removal of organic matter such as droppings is necessary to prevent the buildup of ammonia. When using litter, it should be kept dry, and wet litter should be replaced promptly to avoid gas production.
Good ventilation is key, especially in winter. While insulating the house for warmth, proper airflow must still be maintained. If using coal for heating, doors and windows should not be sealed for extended periods. Heating systems should have a properly connected and unobstructed exhaust pipe. During fumigation with formaldehyde, the dosage and duration must be strictly controlled, followed by adequate ventilation to remove the strong odor before reintroducing the chickens.
Controlling the stocking density is also important. For example, from 1 to 2 weeks of age, the density should be around 25 birds per square meter. From 3 to 4 weeks, it should be about 12 birds per square meter. As chickens grow older, the density should be gradually reduced. In caged systems, overcrowding should be avoided to ensure each bird has enough space to move and breathe comfortably.
Optimizing the diet is another critical factor. A balanced and nutrient-rich feed should be provided based on the chickens' specific needs. Overfeeding or underfeeding can lead to health problems. Particular attention should be given to the crude protein content in the feed—too much can increase nitrogen excretion, contributing to ammonia buildup. Adjusting the feed amount according to the chickens’ condition helps prevent mold growth in the feeding troughs.
Finally, adding probiotics or biological agents to the feed can enhance protein digestion, reduce the conversion of proteins into ammonia and amines, and lower nitrogen excretion. This not only improves air quality within the house but also increases feed efficiency and reduces costs. Implementing these strategies together can significantly improve the living conditions for chickens and promote better overall performance in poultry farming.