GASTRIC ULCERS IN SWINE .4. EFFECTS OF DIETARY PARTICLE SIZE AND CRUDE FIBER CONTENTS ON ULCERATION

The effects of various nutritional factors on the development of gastric ulcers were studied in 3 experiments including 92 pigs. Coarsely ground soybean meal (10%) in the diet gave better protection than did finely ground soybean meal. Isolated soybean protein had no protective action. A watery extract of soybean meal offered some protection in 1 experiment, but had no effect in another. Coarsely ground barley straw included in the diet at 5 or 10% gave almost full protection against ulceration, whereas 2.5% gave only partial protection. Finely ground straw as 2.5% of the diet gave no protection. With increasing severity of the gastric lesions the gastric content became significantly more fluid. © 1969, American College of Veterinary Pathologists. All rights reserved.