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 Lana, R. P.
Right arrow Articles by Perry, T. C.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Lana, R. P.
Right arrow Articles by Perry, T. C.

Journal of Animal Science, Vol 75, Issue 10 2571-2579, Copyright © 1997 by American Society of Animal Science

JOURNAL ARTICLE

Influence of monensin on Holstein steers fed high-concentrate diets containing soybean meal or urea

R. P. Lana, D. G. Fox, J. B. Russell and T. C. Perry
Department of Animal Science, Cornell University, Ithaca, NY 14853, USA.

We conducted two growth trials to evaluate the effects of monensin on amino acid sparing. When Holstein steers were fed a 90% concentrate diet supplemented with soybean meal (13.5% CP), the DMI, ADG, and efficiencies of feed and nitrogen utilization were greater than with urea (P < .10). Monensin improved ADG with both nitrogen supplements (P < .01), but the positive effects of monensin on efficiencies of feed (P = .12) and nitrogen (P = .26) utilization were greater for soybean meal than for urea. Increasing amounts of monensin (0, 11, or 22 mg/kg of DM) caused a linear increase in DMI with urea. Diets with soybean had greater intakes than diets with urea (P < .01); the greatest intake was of a soybean diet with monensin at 11 mg/kg of DM. Holstein steers fed soybean meal at 13.5% CP had lower DMI and greater efficiencies of feed and nitrogen utilization than steers fed 16.7% CP (P < .10). Crude protein level had no effect on ADG (P > .10). Monensin always increased the efficiencies of feed and nitrogen utilization (P < .05), but these trends were greater for diets with 16.7 than for those with 13.5% CP. Overall, monensin decreased DMI (P < .01), but this effect was greater for 16.7% than for 13.5% CP. Because the positive effects of monensin on diet NEg (P = .16) and efficiency of nitrogen utilization (P = .26) were greater for soybean meal than for urea, it seemed that monensin was sparing amino acids.


This article has been cited by other articles:


Home page
 J ANIM SCIHome page
S. C. Kim, A. T. Adesogan, and J. D. Arthington
Optimizing nitrogen utilization in growing steers fed forage diets supplemented with dried citrus pulp
J Anim Sci, October 1, 2007; 85(10): 2548 - 2555.
[Abstract] [Full Text] [PDF]

Home page
 J. Environ. Qual.Home page
L. O. Tedeschi, D. G. Fox, and T. P. Tylutki
Potential Environmental Benefits of Ionophores in Ruminant Diets
J. Environ. Qual., September 1, 2003; 32(5): 1591 - 1602.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
M. T. Gabler and A. J. Heinrichs
Altering Soluble and Potentially Rumen Degradable Protein for Prepubertal Holstein Heifers
J Dairy Sci, June 1, 2003; 86(6): 2122 - 2130.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1997 by the American Society of Animal Science.