摘要：A fi eld experiment using Indigofera sp. was conducted at the Farm Research Station of Faculty of Animal Science, Bogor Agricultural University, Darmaga Campus, during 2008-2009. The objectives of this study were to identify the eff ect of defoliation time on herbage dry-maĴ er production, protein, fi ber contents, and in vitro digestibility of diff erent vegetative parts of Indigofera sp. Block randomized design comprising three levels of defoliation time at fi rst regrowth aĞ er pruning (38, 68, and 88 days) with 3 replications were used in this experiment. Pruning was done 3 months aĞ er transplanted into the experimental plots. First defoliation was conducted aĞ er the plant had been pruned. Herbage was derived from diff erent vegetative parts, i.e: leaves of branch base and all parts of shoot tips. The results revealed signifi cant eff ect of defoliation time on dry maĴ er (DM) production of both branch base and shoot tip herbages. Crude fi ber (CF), neutral detergent fi ber (NDF), acid detergent fi ber (ADF) and in vitro organic maĴ er digestibility (IVOMD) of branch base were infl uenced signifi cantly by defoliation time, except crude protein (CP) and in vitro dry maĴ er digestibility (IVDMD). Defoliation time signifi cantly aff ected CP, CF, NDF, ADF, IVDMD and IVOMD of herbage derived from shoot tips.
