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Nutritional and Environmental Factors Influencing Gastric Ulcers in Swine^{1, 2, 3}

University of Wisconsin, Madison⁴

Abstract

The effects of some nutritional and environmental factors and method of feeding on the development of gastric ulcers and other stomach abnormalities in swine were studied. The feeding of chlortetracycline or a mixture of chlortetracycline, arsanilic acid and bacitracin or high levels of streptomycin had no significant effect on stomach abnormalities. Dried skim milk, ground unextracted soybeans which had been heated, and fluid milk did not improve the basal ration. A ration containing 15% soybean oil also had no significant effect. The addition of thiamine, riboflavin, pyridoxine, calcium pantothenate, niacin, vitamin B₁₂ and ascorbic acid or the fat-soluble vitamins A, D, E, and K to the basal ration did not change the number of stomach lesions observed.

A significantly greater percent of normal stomachs was found when a wheat-oat ration was fed instead of a corn ration. A greater percent of normal stomachs was found when pigs were fed on alternate days only and when they were hand-fed a wet ration twice daily, but the differences only approached significance. Crowding of pigs resulted in no increase in the number of stomach lesions, but may have increased their severity.

The feeding of a ration containing a heattreated corn product or corn which was pelletted and reground had no effect on the development of ulcers. Fluidity of the stomach contents was associated with the abnormal stomachs.

¹ Published with the approval of the Director of the Wisconsin Agricultural Experiment Station, Madison.

² This study was supported in part by Grant AM 05459 from the United States Public Health Service, National Institutes of Health.

³ The authors gratefully acknowledge Central Soya for furnishing soybeans and soybean oil for Experiment ITI.

⁴ Department of Meat and Animal Science (Paper No. 396), Department of Biochemistry and Department of Veterinary Science cooperating.