Is pig farm ventilation good for pigs?

Frequent removal of feces and ventilation in piggery can not only eliminate pollution and keep piggery sanitary, but also clean air and effectively reduce temperature, so as to avoid heat generated by fermentation and increase the temperature of piggery. Do not change the breeder casually in the management and fetus protection of strong sows, so that pigs have a sense of closeness and security; Don't change the feeding time and habits casually. Even if you want to change, you should have a process of gradual adaptation, and don't rush for success. Try to reduce noise, keep a quiet environment, and don't add any bad stimulation to pregnant sows except high temperature. In addition, pregnant sows can't be driven out, and they should be fed in a single circle, single tube and single feed to prevent pigs from biting each other and causing illness or abortion.