Table 2.
Frequency of isolation and mean counts [CFU/g of feces (wet weight)] of major aerobic and anaerobic bacteria, filamentous fungi and yeast found in the feces of 96 bison
| Bacterium, fungi, or yeast | Frequency (%) | CFU |
|---|---|---|
| Aerobic | ||
| Bacillus spp. | 96 (100) | 5.8 × 105 |
| Escherichia coli | 73 (76.0) | 3.1 × 106 |
| Arthrobacter spp. | 51 (53.0) | 3.1 × 104 |
| Brevibacterium spp. | 35 (36.5) | 2.0 × 105 |
| Micrococcus spp. | 34 (35.4) | 7.0 × 106 |
| Enterococcus spp. | 26 (27.1) | 2.4 × 107 |
| Streptococcus milleri group | 24 (25.0) | 7.8 × 106 |
| Other Enterobacteriaceaea | 22 (21.9) | 3.4 × 105 |
| Microbacterium spp. | 22 (21.9) | 6.5 × 105 |
| Mucor sp. (fungus) | 19 (19.8) | 3.0 × 104 |
| Enterococcus faecalis | 15 (15.6) | 5.3 × 105 |
| Aeromonas spp. | 14 (14.6) | 4.4 × 105 |
| Lactobacillus spp. | 12 (12.5) | 5.5 × 105 |
| Other α hemolytic Streptococcus | 11 (11.5) | 2.6 × 107 |
| Dermabacter spp. | 10 (10.4) | 1.0 × 105 |
| Staphylococcus spp. | 7 (7.3) | 4.9 × 104 |
| Enterococcus durans | 6 (6.3) | 2.8 × 104 |
| Corynebacterium spp. | 6 (6.3) | 1.6 × 106 |
| Acinetobacter spp. | 6 (6.3) | 1.0 × 104 |
| Yersinia spp. | 4 (4.2) | 1.0 × 104 |
| Pasteurella spp. | 4 (4.2) | 2.8 × 106 |
| Yersinia enterocolitica | 2 (2.1) | 3.5 × 104 |
| Rhodotorula rubra (yeast) | 2 (2.1) | 9.5 × 104 |
| Staphylococcus aureus | 1 (1.0) | 1.0 × 104 |
| Moraxella spp. | 1 (1.0) | 1.0 × 103 |
| Turicella spp. | 1 (1.0) | 2.7 × 104 |
| Listeria-like | 7 (7.3) | 1.0 × 103 |
| Anaerobic | ||
| Clostridium perfringens | 6 (6.3) | 8.1 × 103 |
| Clostridium spp. | 6 (6.3) | 5.3 × 103 |
CFU — colony-forming units.
a
Enterobacteriacaeae isolated sporadically and in very low quantities (105 in total) were Escherichia fergusonii, Citrobacter freundii, Morganella morganii, Proteus rettgeri, Klebsiella spp., and Cronobacter (“Enterobacter”) zakazakii.