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What is the reason for establishing a new concept of "being kind to pigs" in large-scale pig raising?
Reasons for establishing a new concept of "being kind to pigs" in large-scale pig raising;

Australian animal behaviorist Paul hymes Wuss has worked in a pig farm for many years. After investigation, he thinks that if the breeder is good at communicating with sows, including touching, pressing, transmitting sound and never being violent, then compared with the control group, the sows raised by the former can survive at least 2 more qualified weaned piglets every year. This shows that caring for sows can improve the survival rate of piglets.