Treatments had no effect (P40.05) on
growth performance, diarrhea occurrence, pH of the digestive content, villus height, crypt depth, and
intestinal microbial counts of weanling pigs. However, pigs fed the diet containing 500 mg/kg essential
oil had greater villi density (Po0.05) than those fed diets containing the antibiotic or 1000 and 1500 mg/
kg essential oil.