Leaves of Mulberry (Morus alba Lam.), Leucaena (Leucaena leucocephala Lam de wit.) and Moringa (Moringa oleifera Lam.) were evaluated as dry season protein supplements for grazing animals based on chemical composition, in vitro and in sacco nutrient digestibility and a Rabbit feeding trial. All tree fodder forages had similar dry matter (DM) content, but crude protein was higher in Moringa (28.6%) followed by Leucaena (24.5%), Mulberry (24.1%) and Lucerne (18.0%). Ash content was highest in Mulberry followed by Moringa and Lucerne with Leucaena having lowest amounts. Polyphenols ranged from 2.72 to 3.64%, with Leucaena having highest and Mulberry lowest amounts. Dietary fibre were highest in Mulberry and Moringa, but there were no significant differences (P < 0.05) between Leucaena and Lucerne. In vitro gas production and DM disappearances were higher in Moringa followed by Mulberry and Lucerne with Leucaena having lowest amounts. Except for Leucaena, DM disappearances were increased when rumen fluid from dairy cattle steers was used. In sacco DM disappearances were 33.7% for Leucaena, 78.2% for Lucerne, 50.2% for Moringa and 50.7% for Mulberry. In vitro and in sacco crude fibre and neutral detergent fibre disappearances were relatively lower, but reflected DM disappearances. The Rabbit feeding trial showed diets based on Moringa, Leucaena and combined fodder forages to have significantly better performance than Mulberry and grass hay alone. The conclusion was that tested tree fodder forages have potential of being used as dry season protein supplements for grazing animals on traditional smallholder farms.

中文翻译：

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选定饲料树的营养评估：桑树 (Molus alba Lam.)、银合欢 (Leucaena luecocephala Lam de Wit.) 和辣木 (Moringa oleifera Lam.) 作为放牧动物的旱季蛋白质补充剂

桑叶 (Morus alba Lam.)、银合欢 (Leucaena leucocephala Lam de wit.) 和辣木 (Moringa oleifera Lam.) 的叶子被评估为基于化学成分、体外和囊中营养消化率的放牧动物干季蛋白质补充剂兔子喂养试验。所有树木饲料的干物质 (DM) 含量相似，但辣木 (28.6%) 的粗蛋白较高，其次是银合欢 (24.5%)、桑树 (24.1%) 和琉森 (18.0%)。桑树的灰分含量最高，其次是辣木和琉森，银合欢最低。多酚含量从 2.72% 到 3.64% 不等，银合欢含量最高，桑葚含量最低。桑树和辣木的膳食纤维含量最高，但银合欢和卢塞恩之间没有显着差异（P < 0.05）。Moringa 的体外产气量和 DM 消失率较高，其次是 Mulberry 和 Lucerne，而 Leucaena 的含量最低。除银合欢外，当使用来自奶牛公牛的瘤胃液时，DM 消失增加。在 sacco DM 中，银合欢为 33.7%，卢塞恩为 78.2%，辣木为 50.2%，桑树为 50.7%。体外和囊中粗纤维和中性洗涤纤维的消失相对较低，但反映了 DM 的消失。兔子饲养试验表明，基于辣木、银合欢和混合饲料的饮食比单独使用桑树和干草具有明显更好的性能。结论是，经过测试的树饲料有可能被用作传统小农农场放牧动物的旱季蛋白质补充剂。