@article{MAKHILLRJANS20104127658, title = {Effects of Forage Level in Diet on Bacterial Protein Recycling in Goat Rumen}, journal = {Research Journal of Animal Sciences}, volume = {4}, number = {1}, pages = {10-15}, year = {2010}, issn = {1993-5269}, doi = {rjnasci.2010.10.15}, url = {https://makhillpublications.co/view-article.php?issn=1993-5269&doi=rjnasci.2010.10.15}, author = {M.Z.,L.H.,H.R. and}, keywords = {Forage level,rumen,protozoa,bacteria,engulfing rate,protein recycling,China}, abstract = {The objective of this study was to determine the effects of forage level on bacterial protein recycling in the rumen by Fluorescence-Labeled Bacteria technique (FLB). Four Xuhuai goats with permanent cannulas were used in a 4x4 Latin squares and diets were divided into A (86.96), B (67.63), C (48.31) and D (28.99%) on the basis of forage level in diet. The results showed that rumen protozoal and bacterial populations were shifted heavily by diets (p<0.01) and C recorded the highest protozoal density while A demonstrated the lowest densities of protozoa and bacteria. Significant differences were detected in protozoa engulfing rates between groups (p<0.01) with the lowest value dropping in B. It was also observed that C had the highest bacterial turnover rate and the shortest recycling time. Further estimation of bacterial protein recycling quantity per day per goat resulting from protozoa predation showed that C interpreted the highest bacterial protein recycling quantity while B had a lower bacterial protein recycling quantity, accounted for just 68.2% of that of group C. Results obtained here indicated that diets containing 67.63% forage could curb the bacterial protein recycling in some degree by regulating protozoal biomass and their ingestion action.} }