Utilization of fruits by product as ruminant feed: In vitro digestibility and methane production

Food processing industries have been produced large amounts of waste consisting of peels, seeds, and some other fruit residues. Fruit peels contain phenolic compounds so it has the potential to be used as raw materials in the phytopharmaceutical extraction industry. This study aimed to evaluate the potential use of fruits by-products after the phenolic compound was extracted as ruminant feed by in vitro rumen fermentation analysis. The experiment was arranged in a randomized complete block design with 4 different fruits by-products (pomegranate peel (APGP), mangosteen peel (AMGP), kaffir lime peel (AKLP), and Melastoma candidum fruits (AMCF)) as treatments, and 4 different rumen mixture as a block. The results showed that AKLP had the lowest (P