The critical temperature for heat stress in pigs is 32°C~34°C. When the temperature in the pighouse continuously reaches or exceeds the critical temperature for 2 days to 3 days, the pigs will obviously not adapt. Specific performance: pig loss of appetite, elevated body temperature, lack of energy, boar loss of libido, empty sows do not have heat or estrus, pregnancy sows high mortality of sows, labor sows in the case of excessive temperatures may die. Therefore, the following five points must be paid attention to when raising pigs in summer:
First, to strengthen ventilation
In general, the east-west building can make full use of the front and rear windows to reduce the temperature in the pig house. Smaller windows can make the windows larger. Conditionally installable fans, which promote air circulation when temperatures are too high.
Second, take shade measures
Planting a certain amount of trees around a pig house not only plays a role in afforestation, but also plays a role in shading. In addition, the construction of a pergola beside the pig house can reduce the temperature of the ground near the pig house.
Third, to ensure adequate water
In summer, the demand for water from pigs is relatively large. Therefore, it is necessary to feed dilute foods and feed them now to prevent feed from becoming contaminated. At the same time, clean water must be provided in the sink. Spraying some water around the pig house regularly can play a certain role in cooling. Avoid pouring cool water directly on the pig to cool down and prevent the pig from catching a cold.
Fourth, strengthen feeding management
Reasonably adjust the feeding time and feed best at night. In general, it is advisable to use 4 to 5 o'clock in the morning and 8 to 9 o'clock in the evening to try to avoid feeding at noon. However, the regulation of feeding time should be gradual and gradual, with the temperature changes gradually adjusted, can not be suddenly changed; sub-pig 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 to avoid giving birth in the season when the temperature is high; try not to use too much cold water to rush around the sow's production house to prevent excessive humidity. The feces on the bed should be wiped with a rag with a disinfectant solution; reduce the rearing density and reduce The proportion is from one-fourth to one-third; to keep the shed clean, at least 2 to 3 times a day to clean the feces, 3 to 4 times a month disinfection, and to eliminate mosquitoes and flies work.
Fifth, a reasonable adjustment of feed formulations
Each ton of full-priced feed can add baking soda 2 kilograms to 3 kilograms, vitamin C 150 grams to 200 grams and vitamin E 80 grams to 100 grams; feeding sows can add edible oil 5 kilograms to 8 kilograms per ton, and appropriate Increase crude protein content.
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