Abstract
Dry matter digestibilities of several grape pomace varieties are compared in cow, sheep and goat by in-vitro technique. Values obtained (26%-39%) are low compared to alfalfa hay (69%) or sudan-grass (65%). Total phenols and tannic acid equivalent are determined and influence on digestibility is evaluated. Pre-extraction with cold or warm water reduces the total phenol level but also removes water soluble nutrients. The value of grape pomace as animal feed is discussed in light of these and other results.
- Received October 1981.
- Accepted November 1981.
- Published online January 1982
- Copyright 1982 by the American Society for Enology and Viticulture
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Vol 33 Issue 1
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