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Influence of Various Ratios of Raw and Gelatinized Corn, Oats, Oat Components and Sand on the Incidence of Esophagogastric Lesions in Swine¹

Purdue University, Lafayette, Indiana

Abstract

Four experiments were conducted with swine to study the effect on the incidence of esophagogastric ulcers of feeding various ratios of gelatinized and raw corn, of feeding crushed whole oats or the individual components (oat groat vs. oat hull) and of feeding two roughness factors (blasting sand and cellufloc).

When two-thirds or more of the grain portion of the diet was composed of gelatinized corn, there was a significant (P<.01) increase in severity of esophagogastric lesions. The inclusion of 9% oat hulls or of 30% crushed whole oats reduced the severity of the lesions significantly (P<.01) in one experiment but had no significant effect in another. Inclusion of 21% oat groats was effective also, but not to the extent of either oat hulls or whole oats, thus indicating the apparent protective effect of the oat grain is in the hull portion. Rate of gain was not affected significantly by any of the oat treatments.

White blasting sand fed at levels of 5% or 10% of the ration was without effect on gain, efficiency of feed conversion or upon the severity of esophagogastric lesions.

¹ Department of Animal Sciences Journal No. 3218, Purdue University of Agricultural Experiment Station. A portion of this research was supported by Grant No. AM-07730-03 of the National Institutes of Health, U. S. Department of Health, Education, and Welfare.

² Present address: 532 Sweitzer, Greenville, Ohio.

³ Present address: Route 2, Bryan, Ohio.

⁵ Department of Veterinary Physiology and Pharmacology. Present address: School of Veterinary Medicine, University of Missouri, Columbia.

⁶ The data from theses submitted to the Graduate School, Purdue University in partial fulfillment of the requirements for the degree of Master of Science.