It is well established that villus atrophy and crypt hyperplasia occur at weaning reducing the digestive and absorptive capacity of the small intestine in piglets. Liquid feeding appears to improve intake and growth in piglets but little is known about the effects of liquid feed on the small intestine mucosa. Deprez et al (1987) reported higher villi 11 days after weaning in piglets fed a liquid diet but there is little evidence that these changes persist in older pigs or are specifically due to diet form. This study is part of a series evaluating the effect of liquid feed on pig performance and adaptive changes in the absorptive mucosa of pigs from weaning to slaughter.