Bulls gain faster and more efficiently than heifers. Removal of the gonads (bulls or heifers) reduces rate of gain, increases feed requirements and results in changes in carcass characteristics. Some hormone and hormone-like compounds are commonly used for feedlot cattle. Effects on feedlot performance have been shown to vary between male and female and between intact and castrated animals. In addition, comparative performance between males and females and response to growth promoting compounds have been shown to be influences by the diet, age and stage of fish.
Number of Pages
Department of Animal Science, Agricultural Experiment Station, South Dakota State University
Embry, L. B., "Effect of Sex and Hormonal Compounds on Feedlot Performance and Carcass Merit of Cattle" (1972). South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1972. 4.