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Limited vs. Full-Feeding in Record of Performance Tests for Beef Cattle

U. S. Department of Agriculture

Abstract

The results from limited and unlimited feeding in two different years for testing performance at the U. S. Range Livestock Experiment Station, Miles City, Montana, are studied. The steers were fed slightly different rations.

Frequency distributions of the total digestible nutrients consumed and daily gains of the steers show that on limited feeding the steers were much less variable in daily gains than on unlimited feeding. Variance analyses showed that on limited feeding the sire groups were significantly more alike than would be expected by chance whereas on unlimited feeding the sire groups were significantly different from each other.

It was concluded that forced or ad libitum feeding is the best method by which differences in ability to grow may be determined.

¹ The authors are Associate Animal Husbandmen, Beltsville, Maryland and Miles City, Montana respectively. The authors acknowledge the many helpful suggestions of Dr. R. G. Schott of the Animal Husbandry Division.