Crop Science Illumina
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Published in Crop Sci 39:1873-1880 (1999)
© 1999 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
This Article
Right arrow Full Text Free
Right arrow Full Text (PDF) Free
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 ISI Web of Science
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 ISI Web of Science (9)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Owens, V.N.
Right arrow Articles by Duke, S.H.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Owens, V.N.
Right arrow Articles by Duke, S.H.
Agricola
Right arrow Articles by Owens, V.N.
Right arrow Articles by Duke, S.H.
Crop Science 39:1873-1880 (1999)
© 1999 Crop Science Society of America

CROP QUALITY & UTILIZATION

Protein Degradation and Fermentation Characteristics of Red Clover and Alfalfa Silage Harvested with Varying Levels of Total Nonstructural Carbohydrates

V.N. Owensa, K.A. Albrechtb, R.E. Muckc and S.H. Dukeb

a Plant Science Dep., South Dakota State Univ. Box 2207A, Brookings, SD 57007 USA
b Dep. of Agronomy, 1575 Linden Dr., Univ. of Wisconsin-Madison, Madison, WI 53706 USA
c US Dairy Forage Research Center, 1925 Linden Dr., Madison, WI 53706 USA

owensv{at}ces.sdstate.edu

Extensive degradation of protein during fermentation of high-protein crops reduces efficiency of dietary N utilization in ruminants. Evidence suggests that enhanced levels of fermentable carbohydrates can reduce proteolysis. Our objective was to evaluate whether delaying daily cutting time, to allow total nonstructural carbohydrates (TNC) to accumulate, would inhibit protein degradation by way of greater acid production in the silo. Red clover (Trifolium pratense L.) and alfalfa (Medicago sativa L.) were harvested at 0600, 1000, 1400, and 1800 h in 1993, 1994, and 1995 and wilted to a dry matter (DM) content of 350 g kg-1 before ensiling. The level of TNC in fresh forage of both species increased throughout the day. Starch accounted for most of the daily change in TNC in fresh alfalfa, whereas in red clover, quantitative increases in sugar and starch impacted TNC similarly. Level of TNC at initiation of ensiling did not consistently affect protein degradation during fermentation as confirmed by generally insignificant correlation coefficients. The extent of proteolysis in the silo was consistently greater in alfalfa than red clover. Silage pH typically decreased and starch increased as cutting time was delayed from 0600 to 1800 h. While the extent of proteolysis was largely unaffected by inherent increases in TNC, lower silage pH and higher starch concentrations indicate that silage from the afternoon cuttings may be better preserved and higher in quality.

Abbreviations: NPN, nonprotein nitrogen • PN, protein nitrogen • TN, total nitrogen • TNC, total nonstructural carbohydrates




This article has been cited by other articles:


Home page
 Crop Sci.Home page
J.H. Grabber and W.K. Coblentz
Polyphenol, Conditioning, and Conservation Effects on Protein Fractions and Degradability in Forage Legumes
Crop Sci., June 26, 2009; 49(4): 1511 - 1522.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
G. A. Broderick, N. D. Luchini, S. M. Reynal, G. A. Varga, and V. A. Ishler
Effect on Production of Replacing Dietary Starch with Sucrose in Lactating Dairy Cows
J Dairy Sci, December 1, 2008; 91(12): 4801 - 4810.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
A. F. Brito, G. F. Tremblay, A. Bertrand, Y. Castonguay, G. Belanger, R. Michaud, H. Lapierre, C. Benchaar, H. V. Petit, D. R. Ouellet, et al.
Alfalfa Cut at Sundown and Harvested as Baleage Improves Milk Yield of Late-Lactation Dairy Cows
J Dairy Sci, October 1, 2008; 91(10): 3968 - 3982.
[Abstract] [Full Text] [PDF]

Home page
 Crop Sci.Home page
K. L. Armstrong and K. A. Albrecht
Effect of Plant Density on Forage Yield and Quality of Intercropped Corn and Lablab Bean
Crop Sci., March 19, 2008; 48(2): 814 - 822.
[Abstract] [Full Text] [PDF]

Home page
 Crop Sci.Home page
K. L. Armstrong, K. A. Albrecht, J. G. Lauer, and H. Riday
Intercropping Corn with Lablab Bean, Velvet Bean, and Scarlet Runner Bean for Forage
Crop Sci., January 16, 2008; 48(1): 371 - 379.
[Abstract] [Full Text] [PDF]

Home page
 Crop Sci.Home page
F. E. Contreras-Govea and K. A. Albrecht
Forage Production and Nutritive Value of Oat in Autumn and Early Summer
Crop Sci., October 2, 2006; 46(6): 2382 - 2386.
[Abstract] [Full Text] [PDF]

Home page
 Agron. J.Home page
F. E. Contreras-Govea, K. A. Albrecht, and R. E. Muck
Spring Yield and Silage Characteristics of Kura Clover, Winter Wheat, and in Mixtures
Agron. J., May 3, 2006; 98(3): 781 - 787.
[Abstract] [Full Text] [PDF]

Home page
 Crop Sci.Home page
D.W. Hancock and M. Collins
Forage Preservation Method Influences Alfalfa Nutritive Value and Feeding Characteristics
Crop Sci., February 1, 2006; 46(2): 688 - 694.
[Abstract] [Full Text] [PDF]

Home page
 J DAIRY SCIHome page
G. A. Broderick and W. J. Radloff
Effect of Molasses Supplementation on the Production of Lactating Dairy Cows Fed Diets Based on Alfalfa and Corn Silage
J Dairy Sci, September 1, 2004; 87(9): 2997 - 3009.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
The SCI Journals Agronomy Journal Vadose Zone Journal
Journal of Natural Resources
and Life Sciences Education		 Soil Science Society of America Journal
Journal of Plant Registrations Journal of
Environmental Quality		 The Plant Genome
Copyright © 1999 by the Crop Science Society of America.