TY  - JOUR
T1  - Effects of Forage Level in Diet on Bacterial Protein Recycling in Goat Rumen
AU - Wang, M.Z. AU - Yu, L.H. AU - Wang, H.R. AU - Liu, X. 
JO  - Research Journal of Animal Sciences
VL  - 4
IS  - 1
SP  - 10
EP  - 15
PY  - 2010
DA  - 2001/08/19
SN  - 1993-5269
DO  - rjnasci.2010.10.15
UR  - https://makhillpublications.co/view-article.php?doi=rjnasci.2010.10.15
KW  - Forage level
KW  -rumen
KW  -protozoa
KW  -bacteria
KW  -engulfing rate
KW  -protein recycling
KW  -China
AB  - 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.
ER  -