Tobias Marino et al., 2010. Livest. Res. Rural Dev., 22 (9)
The potential of several vegetables and fruits wastes, that had expired the date of display in supermarkets shelves, were evaluated as a ruminant feed source through the in vitro gas production technique. Samples were analysed for chemical composition, in vitro gas production and energetic value estimative. In general, feed analysed showed low dry matter (DM) and Neutral detergent fibre (NDF) content. Crude protein (CP) content was higher for vegetables with exception of carrot and turnip, compared to fruits. Total values of in vitro gas production were highest for orange, followed by onion, squash and clementine and lowest for tomato, grape and blackberry. Similarly, estimated values of metabolizable energy were highest for orange, followed by pea, squash, onion, cabbage, cauliflower and turnip. Some vegetables and fruits have potential as a ruminant feed according to in vitro gas production technique. However, low dry matter content of these feeds can interfere in the viability of their transport and utilization.