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Journal of Dairy Science Vol. 75 No. 12 3452-3454
© 1992 by American Dairy Science Association ®
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Relationship Between Rumen Bacterial Concentrations and Total Numbers

Burk A. Dehority 1, Anthony P. Grifo Jr. 1, Patricia A. Tirabasso 1, and Francis L. Fluharty 1

1 Department of Animal Science, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster 44691-4096

Based on data from 33 sheep, bacterial concentrations per gram of rumen contents were correlated highly with total bacterial numbers (r = .99). Diets ranged from all forage to 90% concentrate. Similar data were obtained from cattle fed a corn silage diet (r = .95); however, the slope of the regression lines differed between species. Weight of rumen contents was correlated poorly with total bacterial numbers.

Key Words: rumen bacteria • bacterial concentrations • total • numbers

Submitted on June 12, 1992
Accepted on August 13, 1992






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Copyright © 1992 by the American Dairy Science Association ®.