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Late Effects of Whole-Body Irradiation on Nutrient Digestibility by the Burro¹

Agricultural Research Laboratory of the University of Tennessee, Oak Ridge⁴

Abstract

Four digestion trials were conducted with 21 nonirradiated and 11 irradiated mature burros. The first trial was designed to determine the effect of age on nutrient digestion and results indicated that 3-yr. difference in age did not significantly affect digestion of organic matter, crude protein, ether extract, crude fiber or nitrogen-free extract.

The results of the three trials that compared digestion of irradiated and nonirradiated burros indicated that there were no significant differences in the digestion of proximate nutrients as a result of irradiation. However, irradiated burros consistently digested less crude fiber than nonirradiated burros.

¹ This manuscript is published with the permission of the Director of the University of Tennessee Agricultural Experiment Station, Knoxville.

² Represents in part a dissertation presented in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Animal Nutrition at the University of Tennessee.

³ Department of Animal Husbandry-Veterinary Science, University of Tennessee, Knoxville.

⁴ Agricultural Research Laboratory operated by the Tennessee Agricultural Experiment Station for the U. S. Atomic Energy Commission under Contract No. AT-40-l-GENT-242.