该研究的目的是评估绵羊饲喂木薯茎叶青贮（CLS）的营养摄入，性能和瘤胃发酵。16只生长的Java小尾雄羊（体重（BW）20.4±1.9kg）饲喂下列处理日粮：T0（100%牧草）；T1（100%切碎牧草）；T2（80%切碎牧草+20%精料）；和T3（80%切碎牧草+20% CLS）。分别测定每组的营养素的摄入、生产性能和瘤胃发酵特性。

结果发现各组对干物质的消耗没有显著影响，而对粗蛋白质、粗纤维、脂肪和总可消化养分的消耗有显著影响（P<0.05）。精料或CLS在20%水平可增加体重和饲料转化率。观察发现，细菌总数无显著性差异；然而，精料可增加总的原生动物的数量（P<0.05）。T2的总挥发性脂肪酸高于T3，但氨浓度T3高于T2。总之，饲喂20%个木薯叶青贮大大提高了绵羊的性能，饲喂效果接近于饲喂精料所达到的效果。

原文摘要如下：

The use of cassava leaf silage as a substitute for concentrate feed in sheep

Sudarman A¹, Hayashida M², Puspitaning IR¹, Jayanegara A¹, Shiwachi H³

Abstract: We aimed to evaluate nutrient intake, performance and rumen fermentation of sheep fed cassava leaf silage (CLS). Sixteen growing Java thin-tailed male sheep (body weight (BW) 20.4±1.9kg) were fed one of the following dietary treatments: T0 (100% forage); T1 (100% chopped forage); T2 (80% chopped forage+20% concentrate); and T3 (80% chopped forage+20% CLS). Nutrient intake, production performance and rumen fermentation characteristics were measured. There was no significant effect on the consumption of dry matter, whereas there was a significant effect (P<0.05) on the consumption of crude protein, fat, crude fibre and total digestible nutrients. Concentrate or CLS at a 20% level could increase BW and feed efficiency. No significant difference was observed in total bacteria; however, concentrate could increase total protozoa (P<0.05). Total volatile fatty acids were higher in T2 than in T3, but ammonia concentration was higher in T3 than in T2. In conclusion, feeding 20% cassava leaf silage greatly improved sheep performance, approaching that achieved by feeding concentrate.

Keywords: Cassava leaf silage, Concentrate, Rumen fermentation characteristics, Sheep

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