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Appl Environ Microbiol. 1983 April; 45(4): 1394-1397
Copyright © 1983, American Society for Microbiology. All Rights Reserved.

Occurrence of the Rumen Ciliate Oligoisotricha bubali in Domestic Cattle (Bos taurus)

B. A. Dehority, W. S. Damron and J. B. McLaren

¹ Department of Animal Science, Ohio Agricultural Research and Development Center, Ohio State University, Wooster, Ohio 44691, and Department of Animal Science, University of Tennessee, Knoxville, Tennessee 37901²

ABSTRACT

Oligoisotricha bubali, previously observed twice in water buffalo, was detected in rumen contents of domestic cattle (Bos taurus) in two different areas of Tennessee. Concentrations ranged from <1 to 35% of the total protozoa in unweaned calves and up to 72% in older animals in feedlot. In contrast to the other genera of holotrichs, both total numbers and percent composition of O. bubali increased when animals were fed a corn silage-concentrate diet.

Present address: College of Agriculture, University of Hawaii at Hilo, Hilo, HI 96720.

Journal article no. 145-82 from the Ohio Agricultural Research and Development Center.