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Impairment in Nutritive Value of Corn Grain Damaged by Nigrospora oryzae

University of Illinois¹

Abstract

THE extent of infection of the corn grain by fungi of various kinds isan important item in the grading of corn by physical or chemical meansor by performance tests. It may also be an important item in the feedingvalue of the grain for livestock.

Mitchell and Beadles (1940) have studied the impairment in the nutritivevalue of corn by various types of ear rot, using growing albino rats as testanimals. They reported that infection with diplodia or fusarium ear rotdefinitely lowered the digestibility of both protein and energy in corn, aswell as the growth promoting value. A sample of corn containing 53 percentof kernels damaged by the gibberella organism was extremely toxic for theyoung albino rat.

Many references in the literature reporting observations on the feedingvalue, or the toxicity, of "moldy" corn are difficult to evaluate because thetype of the infective organisms was not identified.

¹ Division of Animal Nutrition and Department of Agronomy, Urbana, Illinois.