J. Anim Sci.
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J. Anim Sci. 1948. 7:373-382.
© 1948 American Society of Animal Science
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Application of a Lignin Ratio Technique to the Determination of the Nutrient Intake of Grazing Animals1

R. M. Forbes and W. P. Garrigus

Kentucky Agricultural Experiment Station

Abstract

An application of the ligmn ratio technique to the study of digestibility of pasture forages by steers and wethers has been made. In a series of seven digestion trials with steers, the average recovery of lignin was found to be 102 ± 7 percent. Dry matter intake, digestible protein and total digestible nutrient intake have been calculated by the lignin ratio method in a series of four gracing trials with steers on bluegrass and a total of nine grazing trials with wethers on bluegrass, orchard grass, Kentucky 31 fescue, and ladino clover. Dry matter digestibility and total digestible nutrient content of the various forages were found to vary inversely with the lignin content of the forage.

Footnotes

1 The investigation reported in this paper is in connection with a project of the Kentucky Agricultural Experiment Station and is published by permission of the Director.






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