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THE ROUTINE DETERMINATION OF IN VITRO DIGESTIBILITY OF ORGANIC MATTER IN FORAGES‐AN INVESTIGATION OF THE PROBLEMS ASSOCIATED WITH CONTINUOUS LARGE‐SCALE OPERATION
Author(s) -
Alexander R. H.,
McGowan Mary
Publication year - 1966
Publication title -
grass and forage science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.716
H-Index - 56
eISSN - 1365-2494
pISSN - 0142-5242
DOI - 10.1111/j.1365-2494.1966.tb00462.x
Subject(s) - organic matter , dry matter , rumen , zoology , in vitro , agronomy , forage , nitrogen , chemistry , biology , food science , biochemistry , ecology , fermentation , organic chemistry
A procedure and equipment which make possible a continuous output of 250 to 300 determinations of in vitro digestibility of organic matter per week are described. The effect on in vitro digestibility values of removing rumen liquor from sheep at various times before and after feeding, mixing of rumen liquors from different sheep, and nitrogen supplementation of the inoculum are investigated. Results are given of a comparison of the effect of soil contamination on in vitro data when expressed as digestibility of dry matter and digestibility of organic matter. The levels of within and between‐batch errors are stated and the accuracy of prediction of feeding value is discussed.