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Acceptance and Utilization by Swine of Aflatoxin-Contaminated Corn Treated with Aqueous or Gaseous Ammonia¹

Illinois Agricultural Experiment Station, Urbana 61801

Abstract

Four trials involving 356 pigs were conducted to evaluate acceptance and utilization of ammoniated corn. Certain of the corns had natural contamination with aflatoxins (36, 39 or 90 ppb of B₁) and ammoniation proved effective in reducing the aflatoxin concentration to a non-detectable level as determined by chemical analysis. Ammoniated corns fed free choice with supplement were consumed in lesser quantities than non-ammoniated corns, with associated greater consumptions of supplement. Acceptance and utilization of mixtures of ground ammoniated corn and supplement, however, were equal to non-ammoniated corn and supplement mixtures when water-extract-able ammonia content of the corn dry matter was approximately .1% or less.

¹ This research was supported by the Illinois Agriculture Experiment Station and the Northern Regional Research Center, Agriculture Research Service, U.S.D.A., Peoria.

² Department of Animal Science.

³ N.R.R.C, A.R.S., U.S.D.A., Peoria. Appreciation is expressed to the N.R.R.C. staff for assistance in preparation and analysis of the ammoniated corns.