A Comparison of Microbial Cellulase and Live Cell Rumen Inoculum for Estimating In Vitro Digestibility of Range Grasses

Texas Journal of Agriculture and Natural Resources

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Title A Comparison of Microbial Cellulase and Live Cell Rumen Inoculum for Estimating In Vitro Digestibility of Range Grasses
 
Creator Koostra, James B.
Kinucan, Robert J.
Davis, Delmar I.
 
Subject alkali sacaton; Arizona cottontop; blue grama; IVDDM; Johnsongrass; sideoats grama; Trans-Pecos
 
Description Three commercial-grade cellulase enzymes and a live cell rumen inoculum were used to compare in vitro digestible dry matter of five high cellulose grass species in advanced stages of maturity in the Trans-Pecos, Texas. Three prediction equations were developed to define the relationships between in vitro rumen inoculum techniques and those using cellulase enzymes. All microbial cellulase techniques reliably estimated digestibility, although the rumen inoculum provided a greater extent of digestibility (P < 0.01) than the cellulases. Different grass species exhibited varied levels of digestibility (P < 0.01). Prediction equations between the rumen fluid and cellulase techniques were well correlated (1= 0.69 to 0.81) and highly significant (P < 0.01). These data suggest that enzyme digestibility estimates are effective and may be accurate predictors of live cell dry matter digestibility of range grasses consumed by ruminants.
 
Publisher Agricultural Consortium of Texas
 
Contributor
 
Date 2016-11-10
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier http://txjanr.agintexas.org/index.php/txjanr/article/view/309
 
Source Texas Journal of Agriculture and Natural Resources; Vol 5 (1992); 67-72
0891-5466
 
Language eng
 
Relation http://txjanr.agintexas.org/index.php/txjanr/article/view/309/281
 
Rights Copyright (c) 2016 Texas Journal of Agriculture and Natural Resources
 

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