J. Anim Sci.
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J. Anim Sci. 1953. 12:316-321.
© 1953 American Society of Animal Science
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Wallace, H. D.
Right arrow Articles by Cunha, T. J.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Wallace, H. D.
Right arrow Articles by Cunha, T. J.

Effects of Reducing and Discontinuing Aureomycin Supplementation during the Growing-Fattening Period of Pigs Fed Corn-Peanut Meal, Corn-Soybean Meal, and Corn-Cottonseed Meal Rations1

H. D. Wallace, L. T. Albert, W. A. Ney, G. E. Combs and T. J. Cunha

Florida Agricultural Experiment Station2

Abstract

  1. Five experiments were conducted to determine the feasibility of reducing the level of aureomycin supplementation and the feasibility of completely withdrawing aureomycin from the ration of growing-fattening pigs after they have passed the critical period of growth.
  2. In two tests involving a corn-peanut meal ration, gains were not influenced by reducing the level of aureomycin from 20 grams to 10 grams per ton, and from 36 grams to 18 grams per ton. However, animals on the lower levels ate more feed per day, indicating that appetites may have been improved with a reduction in the amount of antibiotic. Nevertheless, in both tests feed utilization figures were in favor of the group that remained on the high level of antibiotic. Complete withdrawal of the aureomycin caused significant slowing of gains, lower feed consumption, and poorer feed conversion in these two tests as well as in one. in which the ration consisted of corn-cottonseed meal. In two other experiments involving a corn-soybean meal ration, the effects of withdrawing aureomycin were less pronounced but still apparent.
  3. Evidence is provided indicating that antibiotic supplementation should not be discontinued during the growing-fattening period of the pig if optimum gains are to be obtained.

Footnotes

1 Florida Agricultural Experiment Station Journal Series, No. 133. Supported in part by a grant from the National Vitamin Foundation, Inc., and the Lasdon Foundation, Inc.

2 Department of Animal Husbandry and Nutrition, Gainesville, Florida.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1953 by the American Society of Animal Science.