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Grape marc proves worth in SA
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GARY, Ros and Justin Zweck, Blyth, South Australia, heard about grape marc as a feed supplement and were interested in its potential for their dairy herd’s feeding strategy. Grape marc is a by-product of winemaking with a high concentration of fat and tannins. Crimped marc is steam-distilled grape marc that has been screened to remove stalks then rolled to crush the seeds, improving digestibility and energy availability.