Summer cooling
The shady pig house should be built in an open and ventilated area. Before the high temperature season comes, a pergola should be built on the roof of the pig house, and some trees and flowers should be planted around it to not only beautify the environment but also block the sunlight and reduce the temperature of the house.
Ventilation In the high temperature environment, the pig's blood flows to the skin, and the body surface temperature of the pig increases. The enhanced ventilation not only enhances the speed at which heat is taken away from the body surface, but also helps to eliminate harmful gases in the summer housing. It is recommended that qualified farms (households) should adopt mechanical ventilation and install ceiling fans or blowers to ensure that the 24-hour air circulation in pig houses is smooth.
Drinking hot water in the summer, the pig's drinking water increased significantly. Ensuring adequate drinking water is very important for relieving heat stress. Make sure the pigs often drink water. The temperature of the drinking water should be kept as cool as possible. The water directly from the underground deep wells is best to prevent the water pipes and the water tanks from being exposed to the sun, resulting in too hot drinking water. When the temperature is too high, the water can be sprayed on the roof of the pig body (except the branch house) at regular intervals. Generally when the pighouse temperature is above 30°C, spray water once every hour to cool down once. For grow-finishing pigs, deep well water can be sprayed directly onto the pig to cool down, but be careful not to spray the pig's head. The free-range households can build a shallow pool in the corner of the pig house so that the pig can freely soak in the pool.
Reducing thermal radiation Heat radiation is an important source of heat for increasing pig body heat. In summer, direct sun rays must be prevented from directly hitting the pig's body and the roof of the pig house can be insulated. For example, the ceiling of a pig house can be used for planting tall trees to reduce the radiant heat of the roof. In short, take measures to prevent the roof from getting too hot.
Strengthen feeding management
Under high temperature conditions, the pig's appetite and feed intake are significantly reduced, directly affecting the pig's production performance, especially for the nursing sows. Therefore, except for piglets in summer, the level of protein and amino acids in feed grains should be increased, the amount of vitamins should be increased, and the proportion of indigestible and heat-producing roughage should be reduced as much as possible; no feeding or less feeding of grass powder, reducing bran, etc. At the same time, as far as possible, use wet feeds to feed pigs. Feeding time should be selected during the cool period of the day. The pighouse temperature is very high at noon and afternoon and the pigs have no appetite. It is advisable to feed the pigs early in the morning, feed them at noon, feed some pigs in the late afternoon, feed them once at night, add less to the ground, and don't have leftovers in the troughs. Enzyme preparations can also be added to the feed to increase digestibility and reduce heat stress.
Strengthening health management
Due to its special environmental factors, farms have more turbid materials and there are health corners, which create conditions for the breeding of flies and their eggs. Therefore, the mosquitoes and flies in the farm place insect eggs and Other harmful substances into the feed and other substances. At the same time, causing diseases in the pig herds is also a “good†medium for the spread of diseases in pigs. Therefore, mosquitoes and flies must be killed in summer.
(1) Clean the troughs and sinks once a day and remove the excreta, pigs and surrounding areas in a planned manner. The pens and feeding equipment are sterilized once every 3 days to 5 days, and the surrounding environment is sterilized once every half a month. It is possible to use 1% of Suer, 10% of quicklime milk and 2% of caustic soda. The pig body can be sprayed with 5% carbolic acid.
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