How to determine the best weaning age of piglets?

(1) Although 17 weaned earlier than 35 weaned 18 days, if 17 weaned piglets were supplemented with liquid milk replacer for about 4 days, the stimulation to the small intestine of piglets could be reduced, making it roughly equivalent to the energy intake of piglets weaned at 35 days and fed with solid feed.

(2) The more goblet cells in early weaned piglets, the more goblet cells in intestinal epithelium can participate in and regulate the important components of intestinal local immune function through specific and nonspecific immune mechanisms. Goblet cells between intestinal epithelium may play an important role in the regulation of intestinal immune function in early weaned piglets.

In a word, young pigs get passive immunity by eating colostrum, and when 16 years old, it falls below the protection level, so they need to get immunity through active immunity. The weaning age depends on the specific diseases in the pig herd.