Variables Affecting in Vitro Rumen Fermentation Studies in Forage Evaluation: An Annotated Bibliography.

Abstract

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DIGESTIBLE ENERGY IN FORAGE BYIN VIVOANDIN VITROASSAYS

“…It has included measurements of the in vitro digestibility of cellulose and other specific carbohydrates in forage; of dry matter, organic matter, and energy; and of the production of volatile fatty acids and various gases (19). Although forage is primarily a source of energy for ruminants, and although digestible energy therefore is apreferred unit of measurement (8), the methods used to study digestible energy in vitro (5,6,20) were not developed for routine analyses. This study deals with a routine method for in vitro digestion of energy in forage samples, and discusses the correlation between in vivo and in vitro digestible energy in 102 hays.…”