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


     

Journal of Dairy Science Vol. 80 No. 10 2513-2522
© 1997 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 Rulquin, H.
Right arrow Articles by Delaby, L.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Rulquin, H.
Right arrow Articles by Delaby, L.

Effects of the Energy Balance of Dairy Cows on Lactational Responses to Rumen-Protected Methionine

H. Rulquin 1 and L. Delaby 1

1 Station de Recherches sur la Vache Laitière, Institut National de la Recherche Agronomique, 35590 St-Gilles, France

This trial was designed to investigate the interactions between level of dietary energy and the response of cows after supplementation of rumen-protected Met. We examined this interaction for dairy cows fed a diet that was deficient in Met. Two percentages of energy (87 or 100% of requirements) were supplied with two concentrations of rumen-protected Met (0 or 21 g/d). Twenty-four Holstein cows (58 d in milk) were assigned to an experiment with a splitplot design including five periods of 3 wk each. The lower energy level was obtained by limiting the amount of feed offered (18.4 vs. 20.1 kg of dry matter intake). Diets characterized by low or normal amounts of energy were composed of corn silage (69.4% vs. 69.7%), energy concentrate (18.5% vs. 22.1%), oil meals treated with formaldehyde (11.5% vs. 7.4%), and urea (0.8% vs. 1.0%), respectively. The interaction between energy level and Met supplementation did not affect yield or composition of milk. An increase in the supply of both energy and Met increased the true protein content of milk by 0.11 percentage units. The effects of the level of dietary energy on the protein content of milk augmented the effects caused by Met supplementation. The main practical conclusion was that rumen-protected Met can be used with diets based on corn silage and soybean meal to increase the protein content of milk, even for dairy cows that are in a negative energy balance.

Key Words: rumen-protected Met • energy balance • milk proteins • lactating dairy cows

Submitted on August 8, 1996
Accepted on April 25, 1997




This article has been cited by other articles:


Home page
 J DAIRY SCIHome page
D. Vyas and R. A. Erdman
Meta-analysis of milk protein yield responses to lysine and methionine supplementation
J Dairy Sci, October 1, 2009; 92(10): 5011 - 5018.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
G. A. Broderick, M. J. Stevenson, and R. A. Patton
Effect of dietary protein concentration and degradability on response to rumen-protected methionine in lactating dairy cows
J Dairy Sci, June 1, 2009; 92(6): 2719 - 2728.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
G. A. Broderick and R. E. Muck
Effect of alfalfa silage storage structure and rumen-protected methionine on production in lactating dairy cows
J Dairy Sci, March 1, 2009; 92(3): 1281 - 1289.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
A. Preynat, H. Lapierre, M. C. Thivierge, M. F. Palin, J. J. Matte, A. Desrochers, and C. L. Girard
Effects of supplements of folic acid, vitamin B12, and rumen-protected methionine on whole body metabolism of methionine and glucose in lactating dairy cows
J Dairy Sci, February 1, 2009; 92(2): 677 - 689.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
G. A. Broderick, M. J. Stevenson, R. A. Patton, N. E. Lobos, and J. J. Olmos Colmenero
Effect of Supplementing Rumen-Protected Methionine on Production and Nitrogen Excretion in Lactating Dairy Cows
J Dairy Sci, March 1, 2008; 91(3): 1092 - 1102.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
J. Cho, T. R. Overton, C. G. Schwab, and L. W. Tauer
Determining the Amount of Rumen-Protected Methionine Supplement That Corresponds to the Optimal Levels of Methionine in Metabolizable Protein for Maximizing Milk Protein Production and Profit on Dairy Farms
J Dairy Sci, October 1, 2007; 90(10): 4908 - 4916.
[Abstract] [Full Text] [PDF]

Home page
 J ANIM SCIHome page
R. C. Waterman, C. A. Loest, W. D. Bryant, and M. K. Petersen
Supplemental methionine and urea for gestating beef cows consuming low quality forage diets
J Anim Sci, March 1, 2007; 85(3): 731 - 736.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
H. Rulquin, B. Graulet, L. Delaby, and J. C. Robert
Effect of different forms of methionine on lactational performance of dairy cows.
J Dairy Sci, November 1, 2006; 89(11): 4387 - 4394.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
C. L. Girard, H. Lapierre, J. J. Matte, and G. E. Lobley
Effects of Dietary Supplements of Folic Acid and Rumen-Protected Methionine on Lactational Performance and Folate Metabolism of Dairy Cows
J Dairy Sci, February 1, 2005; 88(2): 660 - 670.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
S. M. Noftsger, N. R. St-Pierre, S. K. R. Karnati, and J. L. Firkins
Effects of 2-Hydroxy-4-(methylthio) Butanoic Acid (HMB) on Microbial Growth in Continuous Culture
J Dairy Sci, August 1, 2003; 86(8): 2629 - 2636.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
S. Noftsger and N. R. St-Pierre
Supplementation of Methionine and Selection of Highly Digestible Rumen Undegradable Protein to Improve Nitrogen Efficiency for Milk Production
J Dairy Sci, March 1, 2003; 86(3): 958 - 969.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1997 by the American Dairy Science Association ®.