A.S. Series 77-21
Antibiotics have been used in feed supplements for laying hens for over 25 years. Where controlled studies have been conducted, their use has been shown to improve reproductive performance, especially under adverse conditions. From time to time feeding trials have been conducted at this laboratory to evaluate their potential and perhaps to obtain some leads as to their mode of action.
Number of Pages
Department of Animal Science, Agricultural Experiment Station, South Dakota State University
Carlson, C. W. and Guenthner, E., "Bactracin Supplements for Egg Production" (1977). South Dakota Poultry Field Day Proceedings and Research Reports, 1977. 4.