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Book: Ecology, Production, and Management of Lolium for Forage in the USA
Published by: Crop Science Society of America

 

This chapter in ECOLOGY, PRODUCTION, AND MANAGEMENT OF LOLIUM FOR FORAGE IN THE USA

  1.  p. 71-78
    cssa special publication 24.
    Ecology, Production, and Management of Lolium for Forage in the USA

    F. M. Rouquette and L. R. Nelson (ed.)

    ISBN: 978-0-89118-603-8

     
    Published: 1997


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doi:10.2135/cssaspecpub24.c5

Forage Quality of Annual Ryegrass

  1. H. Lippke and
  2. W. C. Ellis
  1. Texas A & M University, Agricultural Research & Extension Center, Uvalde, Texas
    Texas A & M University, College Station, Texas

Abstract

Immature annual ryegrass (Lolium multiflorum Lam.) can contain levels of digestible nutrients that allow many ruminants to approach their genetic potential for production. This highly nutritious stage of maturity may persist for three or more months before significant declines in digestibility occur; however, nutritional limitations of ryegrass are repeatedly indicated by unpredictably mediocre performance of young animals grazing highly digestible primary growth. These limitations appear related (i) to unfavorable initial adaptations by the ruminal microbial ecosystem to such rapidly digestible forage, (ii) to an inefficient ruminal fermentation and synthesis of microbial protein, and (or) (iii) to reduced forage intake. When suboptimal animal response is related to poor protein use, it may be ameliorated by supplemental feedstuffs and (or) dietary adjuvants that appear to improve efficiency of ruminal protein and energy transformations.

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Copyright © 1997. Copyright © 1997 by the Crop Science Society of America, Inc., 5585 Guilford Rd., Madison, WI 53711 USA