The hot summer weather and high humidity make it easy to cause a lot of adverse effects on the pig industry. The critical temperature for pig heat stress is 33°C-35°C. When the temperature in the pighouse continuously reaches or exceeds the critical temperature for 2-3 days, pigs can usually show obvious inappropriateness. The specific manifestations are: Pig loss of appetite, increase in body temperature. High, lack of energy, boar loss of libido, empty sows do not have estrus, or estrus abnormalities, pregnancy sows have high embryo mortality, labor sows may cause death in the case of excessive temperatures.
1. The ventilation of the pig house must be strengthened. In general, for the building of the east-west building, the front and rear windows can be fully utilized to reduce the temperature in the pig house. Smaller windows can be properly retrofitted to make the windows bigger before the summer arrives. Conditional fans or exhaust fans can be installed to promote air circulation when the temperature is too high.
2. Must take shade spray measures. In addition, a certain amount of trees or vines are planted around the pig house, which not only plays a role in afforestation but also plays a role in shading. In addition, according to the spray system in the pig house, fine water mist can reduce the temperature inside the pig house.
3. Must ensure adequate water use. In summer, the demand for water from pigs is relatively large. Therefore, it is advisable to feed in thin foods. At the same time, there must be sufficient supply of clean drinking water in the sink. You can also spray some water around the pig house regularly, which can play a certain role in cooling, should not be cold water poured directly to the pig to cool, prevent swine cold.
4. Must strengthen feeding management. Reasonably adjust the feeding time and feed best at night. Normally, it is advisable to use 4 o'clock in the morning to 5 o'clock in the morning and 8 o'clock in the evening to 9 o'clock in the evening. Try to avoid feeding at noon time. However, the adjustment of feeding time should be gradual and gradual, with the temperature changes gradually adjusted, can not suddenly change; piglets transfer or sale, should be arranged in the early and late temperatures are relatively low, when the weather is cool; appropriate adjustment of sow delivery time, try Avoiding litters in warmer seasons; sow farrower pigs do not use cold water to circulate, to prevent excessive humidity, the feces in the bed should be wiped with a rag with a disinfectant; reduce the stocking density, to maintain the circle Shelf health, at least twice a day buried feces, 4 times a month disinfection, it is recommended to use biological fermentation bed technology to raise pigs, and do a good job to eliminate mosquitoes and flies.
5. Must properly adjust the feed formulation. You can add 2-3kg of baking soda, 2-3g of vitamin C150-200g, and 80-100g of vitamin E per ton for the preparation of full-price feed. You can add 5-8kg of edible oil per ton of feed for sows, and increase crude protein properly. content.
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