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


     

J. Anim Sci. 1948. 7:26-34.
© 1948 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 Hamilton, T. S.
Right arrow Articles by Johnson, B. C.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Hamilton, T. S.
Right arrow Articles by Johnson, B. C.

Further Comparisons of the Utilization of Nitrogen of Urea with that of Some Feed Proteins by Sheep1

Tom S. Hamilton, Willard B. Robinson2 and B. Connor Johnson

University of Illinois3

Abstract

Further experiments on the comparative utilization of the nitrogen of urea and that of some feed proteins are reported. Growing lambs were used as experimental animals and the paired-feeding procedure, with single reversal of rations, was used throughout. Nitrogen balance was the criterion.Eight different comparisons were studied with the following results:

  1. The nitrogen in a ration containing 16.2 percent protein equivalent (63 percent from urea) was less efficiently utilized than that in a ration containing 11.4 percent (46 percent from urea).
  2. In confirmation of our previously reported data, the nitrogen of urea was as well utilized by growing lambs as were the same amounts of nitrogen from dried skimmilk, dried skimmilk plus cystine, glutenfeed, casein or casein plus cystine, provided the protein equivalent in the rations does not exceed about 12 percent and provided at least 16 percent of the total nitrogen is in the form of preformed protein.
  3. The nitrogen of linseed oil meal was more efficiently utilized than that of urea when the rations contained about 12 percent protein equivalent of which one-fourth was supplied by a basal ration containing preformed proteins.

Footnotes

1 This investigation was made possible by the donation of funds to the University of Illinois by the E. I. DuPont de Nemours Company

2 Present address: New York State Agricultural Experiment Station, Geneva, New York.

3 Animal Nutrition Division, Urbana, Illinois.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1948 by the American Society of Animal Science.