In summer, the suitable temperature for maintaining a high egg production rate of laying hens is 15 to 23°C. When the temperature exceeds 30°C, the laying rate of chickens will drop significantly. When the temperature reaches 32°C, it exceeds the tolerance of the chicken body. The chickens will experience heat stress. It is characterized by large mouth breathing, heavy drinking water, decreased feed intake, and even food intake. The immune system and production performance are declining. A long period of heat stress can cause shock and death, which is a serious hazard to the poultry industry. Here are some ways to effectively prevent chicken heat stress.
?? 1, chicken house cooling method? In the shed outside a variety of trees, can be a good shade for the chicken house cooling. In the chicken house, you can open some small windows under the big window for better ventilation. The vertical ventilation effect is good in the chicken house. A large exhaust fan is installed on the east and west walls of the house to run the air in each corner of the house and discharge the exhaust gas from the house. In the summer, we need to do a good job of disinfecting chickens and insist on sterilizing chicken once a day, which can also lower the temperature of the house. In addition, when the temperature exceeds 35 °C, 2 to 4 o'clock in the afternoon to the shed of the house, the roof of cold water, used to absorb some of the heat, while spilling cold water into the house, to the chicken house and chicken body cooling.
2. Scientific Feeding Method When the temperature is high, the feed intake of the chicken is reduced. To avoid feeding when the temperature is high at noon, you can feed when the weather is cool, and feed it once in the morning and evening. At the same time, in order to reduce heat stress in chickens, it is also necessary to increase the content of protein and vitamins in feeds, increase vitamin C appropriately, and have an anti-stress effect, generally adding about 100 grams per ton of feed. Vitamin E and vitamin A are all beneficial to immunity and heat stress. Vitamin A adds 10,000 units per kilogram of feed, and vitamin E adds about 20 milligrams per kilogram of feed. The effect is very good. Underdeveloped chicken sweat glands, feathers cover the whole body, when the temperature is higher, they use the mouth to emit heat, exhale carbon dioxide, so that the body's acid-base imbalance, drinking water to add electrolytes to maintain balance, commonly used 0.1% to 0.2% of baking soda or Potassium chloride, ammonia chloride and other salts, in addition, reducing the density of chickens can also reduce the chicken's heat stress.
?? 3, Chinese herbal medicine to prevent the use of Chinese herbal medicine to prevent chicken heat stress is convenient and effective, the specific method is: honeysuckle 10 grams, 8 grams of Forsythia, Ban Langen 15 grams, 10 grams of Campanulaceae as a dose, after the Chinese medicine with a good tanning Before soaking for 30 minutes with 0.5 kg of water, add 9 kg of water after soaking, and then cook in a casserole for 45 minutes. The cooked Chinese medicine needs to be cooled for 1 hour, and then added to 50 kg of water for 1000 chickens to drink. One day, this Chinese medicine formula can also prevent chicken colibacillosis, but it is better to disinfect the chicken house at the same time when using it, and the effect is better.
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