Yanning improves feed efficiency and weight gain by significantly reducing three targets: feed induced immune response, high digestibility, and enteritis control, resulting in a comprehensive economic benefit increase of about 3%. The mission of Yanning is to control a series of inflammations such as enteritis, salpingitis, endometritis, mastitis, glandular gastritis, pericarditis, peritonitis, etc., which cause a decrease in production performance. At the same time, the excessive defense response of the body to inflammatory factors results in significant feed waste.