Effect of processing with tannin degrading bacteria isolated from gut of European fallow deer on digestibility and fermentation of conocarpus and eucalyptus leaves

Tannin-degrading bacteria (TDB) was isolated and identified from the rumen of European fallow deer (dama dama), fed on tannin-rich diets (TRD). Such bacteria included Klebsiella pneumonia (K1, K2, K3, K4, K5, K7, K8, K9 and Acinetobacter sp. (A6). Then, conocarpus and eucalyptus leaves were processed by TDB for ten days and in vitro digestibility of processed samples was determined. Finally, TDB were inoculated into the rumen of Arabic sheep and ruminal fermentation parameters were studied. Based on the results, bacterial processing was affected dry matter (DM) and neutral detergent fiber (NDF) digestibility of conocarpus and eucalyptus leaves, that the highest contents observed in K9 (p