Pig farms are prone to heat stress in summer. What should be done to effectively prevent this situation?
1. Improve the environment of pig pens
Planting trees around pig pens and improving the microclimate in the farm area is an effective way to prevent heat stress in breeding pig farms.
2. Enhance ventilation.
Pig pens should be equipped with north and south windows and floor-to-ceiling windows. When the weather is hot, all ventilation should be opened to effectively reduce the temperature of the pig pen. Closed pig pens should use negative pressure ventilation. Hanging a wet curtain at the air inlet to cool down the pig pen will have a good cooling effect.
3. Adjust nutrition
Adjusting dietary vitamins and mineral elements can alleviate heat stress. Electrolyte multivitamins, sodium bicarbonate and vitamin C can be added to drinking water. To reduce pig density, vaccination, herd transfers, and sow farrowing beds should be carried out in the morning and evening when the weather is cool to reduce heat stress in pigs.
4. Build a bathing pool in the enclosure.
The water in it should be changed frequently so that the pigs can bathe freely in it, which can also achieve a good cooling effect.
5. Add anti-heat stress diet or (Yucca extract)
Improve the anti-heat stress performance of cattle. Yucca saponin in yucca extract, as a structural analog of cortisol, can compete with cortisol for the same binding site, effectively block the cascade reaction caused by cortisol under stress conditions, and quickly relieve the effects of heat stress. negative impact.
Summer heat stress is a common phenomenon in many pig farms. The key is that the infrastructure construction of a pig farm requires many aspects to be considered. Only by doing a good job of heatstroke prevention, cooling, ventilation and epidemic prevention can we effectively avoid heat stress.
6. Do a good job in preventing heatstroke and cooling in summer.
First, improve the environment inside and outside the pigsty and do a good job in greening the pigsty. Grapes, pumpkins and other vines can be planted on both sides of the pigsty road, so that the vines can cover the pergola, providing shade in summer and effectively reducing heat radiation in summer.
Second, install insulation materials in the pig house, install sunshade nets or pergolas outside the pig house, and paint the outer walls and roofs of the pig house with lime mortar, which can effectively reduce the direct sunlight on the pig house in hot summer and reduce heat loss. The harm of stress to pigs.
7. Improve the indoor environment
A disinfection device is installed in the pig pen, which can be sprayed every half hour in summer. Do not turn off the fan when spraying, which can reduce the local temperature of the pig pen. Wet curtain fans can also be used to cool down, which can reduce the indoor temperature by about 5°C, and the effect is significant.
At present, the most cost-effective way to cool indoors is to drip water, not on the necks and backs of pigs. The surface temperature can be taken away by evaporation to achieve a cooling effect, but this method must be combined with ventilation to have a good effect.
8. Strengthen feeding and management.
Under high temperatures, providing pigs with enough cool drinking water is an effective heatstroke prevention measure. On the one hand, it can replenish the water lost by pigs' heat dissipation; on the other hand, after pigs drink cold water, it will lower the temperature of the digestive tract, thereby lowering the body temperature. At the same time, the feeding density of pigs and the temperature of the pig house should be reduced.
9. Add anti-heat stress
When the ambient temperature is too high, some anti-heat stress drugs can be appropriately added to the feed to reduce the harm of heat stress to pigs . Generally, you can choose vitamin drugs, such as vitamin C, vitamin E, choline, etc. An appropriate amount of sodium bicarbonate can also be added to relieve heat stress; adding some Chinese herbal medicine can enhance the adaptability and resistance to heat stress of pigs.