JDS
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Journal of Dairy Science Vol. 84 No. 7 1686-1697
© 2001 by American Dairy Science Association ®
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 McCormick, M. E.
Right arrow Articles by Blouin, D. C.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by McCormick, M. E.
Right arrow Articles by Blouin, D. C.

Effect of Protein Source and Soluble Carbohydrate Addition on Rumen Fermentation and Lactation Performance of Holstein Cows

M. E. McCormick 1, D. D. Redfearn 1, J. D. Ward 1, and D. C. Blouin 2

1 Louisiana Agricultural Experiment Station, Louisiana State University Agricultural Center, Franklinton 70438
2 Louisiana Agricultural Experiment Station, Louisiana State University Agricultural Center, Baton Rouge 70803-4210

Rumen in vitro and in vivo experiments were conducted to evaluate the effect of rumen undegradable protein and soluble carbohydrates on rumen ammonia N release and lactation performance of Holstein cows. In the in vitro experiment, freeze-dried annual ryegrass (Lolium multiflorum, LAM) pasture was supplemented 1:1 with ground corn-based grain supplements containing expeller or solvent soybean meal with sucrose or lactose supplements at 0, 2.5, or 5% of dry matter (DM). The ammonia release rate was slower with expeller compared with solvent soybean meal-supplemented diets. Sucrose supplementation at the 5% level lowered rumen ammonia concentrations, but lactose-fortification of grain supplements was without effect. In the in vivo study, 32 multiparous Holstein cows were blocked according to milk yield and randomly assigned to corn-based grain supplements containing 1) solvent soybean meal, 2) solvent soybean meal +5% sucrose supplement, 3) expeller soybean meal, or 4) expeller soybean meal +5% sucrose supplement. Grain supplements and fresh annual ryegrass were component fed at approximately a 1:1 grain to forage ratio (DM basis). Forage DM intake was higher for cows receiving solvent soybean meal supplemented grain supplements than those receiving expeller soybean meal (12.2 ± 2.1 vs. 11.4 ± 2.2 kg/d), but total DM intake was similar for all diets (22.8 ± 2.9 kg/d). Fat-corrected milk yield was similar for all diets averaging 37.5, 38.2, 39.1, and 37.6 kg/d for diets 1 to 4, respectively. Rumen fermentation, milk urea nitrogen, and body condition were unaffected by supplements; however, cows fed grain supplement 1 utilized dietary energy more efficiently than cows offered the other dietary treatments. High dietary crude protein concentrations may have limited lactation response to rumen undegradable protein and sugar.

Key Words: dairy cow • lactation • rumen undegradable protein • soluble carbohydrate

Submitted on October 5, 2000
Accepted on March 13, 2001




This article has been cited by other articles:


Home page
 Crop Sci.Home page
I. Y. Tecle, D. R. Viands, J. L. Hansen, and A. N. Pell
Response from Selection for Pectin Concentration and Indirect Response in Digestibility of Alfalfa
Crop Sci., March 27, 2006; 46(3): 1081 - 1087.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
S. M. Reynal and G. A. Broderick
Effect of Dietary Level of Rumen-Degraded Protein on Production and Nitrogen Metabolism in Lactating Dairy Cows
J Dairy Sci, November 1, 2005; 88(11): 4045 - 4064.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
I. R. Ipharraguerre and J. H. Clark
Impacts of the Source and Amount of Crude Protein on the Intestinal Supply of Nitrogen Fractions and Performance of Dairy Cows
J Dairy Sci, May 1, 2005; 88(e_suppl_1): E22 - E37.
[Abstract] [Full Text] [PDF]

Home page
 J ANIM SCIHome page
A. N. Hristov, J. K. Ropp, K. L. Grandeen, S. Abedi, R. P. Etter, A. Melgar, and A. E. Foley
Effect of carbohydrate source on ammonia utilization in lactating dairy cows
J Anim Sci, February 1, 2005; 83(2): 408 - 421.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
J. E. Vallimont, F. Bargo, T. W. Cassidy, N. D. Luchini, G. A. Broderick, and G. A. Varga
Effects of Replacing Dietary Starch with Sucrose on Ruminal Fermentation and Nitrogen Metabolism in Continuous Culture
J Dairy Sci, December 1, 2004; 87(12): 4221 - 4229.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
A. N. Hristov and J. K. Ropp
Effect of Dietary Carbohydrate Composition and Availability on Utilization of Ruminal Ammonia Nitrogen for Milk Protein Synthesis in Dairy Cows
J Dairy Sci, July 1, 2003; 86(7): 2416 - 2427.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
F. Bargo, L. D. Muller, E. S. Kolver, and J. E. Delahoy
Invited Review: Production and Digestion of Supplemented Dairy Cows on Pasture
J Dairy Sci, January 1, 2003; 86(1): 1 - 42.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2001 by the American Dairy Science Association ®.