Effect of Burma padauk (Plerocarpus indicus), rain tree (Samanea saman (Jacg.) Merr.) and Siamese rough bush (Streblus asper) leaves as fiber sources in total mixed ration on in vitro fermentation.

摘要

The objective of this study was to examine the effect of leaves as fibre sources in total mixed ration on in vitro fermentation using in vitro gas production technique. The experimental was designed in CRD with five replicates per treatment. The fibre sources in total mixed ration were corn cob (control group), Burma padauk leaves, rain tree leaves and Siamese rough bush leaves. The results showed that the kinetic of gas production and digestibility were statistical significantly differences among treatment (p<0.05). The corn cop as fibre source in total mixed ration gave the highest potential of extent of gas production. However, highest rate of gas production and digestibility were observed in the Siamese rough bush leaves as fibre source. Ruminal fermentation end-products consisted of ammonia nitrogen and volatile fatty acid were significantly differences among treatments (p<0.05). All treatment means were within the normal range. The pH values were relatively stable at 7.0-7.3. The results demonstrated that Burma padauk leaves, rain tree leaves and Siamese rough bush leaves can be used as fibre sources in total mixed ration. Importantly, leaves are abundant and available for feeding the ruminants in dry season.