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


     

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 Similar articles in PubMed
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 HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Karges, K. K.
Right arrow Articles by Clanton, D. C.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Karges, K. K.
Right arrow Articles by Clanton, D. C.

Journal of Animal Science, Vol 70, Issue 6 1957-1964, Copyright © 1992 by American Society of Animal Science

JOURNAL ARTICLE

Effects of ruminally degradable and escape protein supplements on steers grazing summer native range

K. K. Karges, T. J. Klopfenstein, V. A. Wilkerson and D. C. Clanton
Department of Animal Science, University of Nebraska, Lincolon 68583-0908.

One experiment was conducted during 1989 to determine whether a deficiency exists for either ruminally degradable or escape protein in steers grazing summer native range. Increasing levels of ruminally degradable (.15, .27, and .37 kg/d) and escape protein (.07, .14, and .21 kg/d) replaced a cornstarch and molasses (energy control) supplement. Supplements were isoenergetic and fed individually to steers (.88 kg/d). No response to the degradable protein supplement (P = .15) was observed; however, a linear gain response (P less than .01) was observed in steers fed escape protein in addition to ruminally degradable protein. An in vitro study indicated that more (P less than .01) microbial protein was synthesized from the energy supplement than from the degradable protein; this finding presumably relates to the numerical decrease in weight gains observed for steers fed degradable protein supplements. Analyses of esophageal extrusa samples indicated that CP was relatively constant for the 1989 growing season compared with the 1988 growing season (P less than .05). Escape protein values differed (P less than .01) between years and among months within year. Forages that were apparently grazed in 1989 were never deficient in degradable protein. Additional gain observed from feeding escape protein would indicate that microbial protein synthesis may be insufficient to satisfy the metabolizable protein requirement, which probably limited gains by steers grazing summer native range.


This article has been cited by other articles:


Home page
 Professional Animal ScientistHome page
R. F. Cooke and J. D. Arthington
Case Study: Effects of Protein Source Added to Molasses-based Supplements on Performance of Range Cows
Professional Animal Scientist, June 1, 2008; 24(3): 264 - 268.
[Abstract] [PDF]

Home page
 J ANIM SCIHome page
K. W. Creighton, C. B. Wilson, T. J. Klopfenstein, and D. C. Adams
Undegradable intake protein supplementation of compensating spring-born steers and summer-born steers during summer grazing
J Anim Sci, March 1, 2003; 81(3): 791 - 799.
[Abstract] [Full Text] [PDF]

Home page
 Crop Sci.Home page
G.F. da C. Lima, L.E. Sollenberger, W.E. Kunkle, J.E. Moore, and A.C. Hammond
Nitrogen Fertilization and Supplementation Effects on Performance of Beef Heifers Grazing Limpograss
Crop Sci., November 1, 1999; 39(6): 1853 - 1858.
[Abstract] [Full Text]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1992 by the American Society of Animal Science.