Rumen degradability of Sago and Sago By products using nylon bag technique

Abstract

The objective of this study was to determine the rumen degradability of sago starch (SS), sago palmpith (SPP), reissued sago palm pith (RSPP), sago palm leaves (SPL), sago palm petiole (SPP1), ground corn (GC) andpalm kernel cake (PKC) using nylon bag technique. Three ruminally fistulated indigenous cattle with average weightof 200+25 kg, were used. The feed sources were weighed in nylon bags and incubated ruminally for 2, 4, 6, 8, 12, 24,48 and 72 h. The results showed that asymptote (a+b) of DM of feed sources ranked from the highest to the lowest;SS, GC, SPP, RSPP, PKC, SPL, and SPP1 (98.8, 80.4, 80.2, 79.7, 78.4, 61.4 and 61.2%, respectively) and effectivedegradability (ED) of DM ranked from the highest to the lowest; SS, SPP, GC, RSPP, PKC, SPL and SPP1 (89.2,57.9, 57.5, 56.4, 50.4, 40.6 and 40.2%, respectively). The OM asymptote (a+b) and ED of feed sources were similarto those for degradation of DM, except for SPL which was lower (p<0.05) in degradability of OM (62.7% and 41.5%,respectively) than SPL (61.8% and 40.7%, respectively). It was concluded that SS, SPP and RSPP could be used asenergy sources in concentrate for ruminants while SPL and SPP1 had potential as roughage sources for ruminants.