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Digestibility of whole plant faba beans after alkali treatment

, : Digestibility of whole plant faba beans after alkali treatment. Wirtschaftseigene Futter 30(2): 134-138

Field beans harvested with a special machine at 69% of dry matter were treated with 5% NaOH or 3% NH3 and compared with dried untreated material. NaOH treatment reduced the content of crude protein to about 3%, N-free extract to 5%, whereas the content of ash increased to 7%. NH3 treated plants contained 6.5% more crude protein but 7% less N-free extract than the control. Treatments did not change substantially the crude fiber content or acid detergent fiber content. NaOH treatment improved the in vivo digestibility of organic matter to 2.4%, crude fiber to 18%, N-free extract to 6% and impaired the digestibility of crude protein to 15%. NH3 treatment did not influence the digestibility significantly.

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