Table 1.
Prevalence of Enterococcus spp. in complete feed and feed ingredient samples.
| Animal feed type | No. of samples | No. (%) of positive samples | No. of isolates | E. faecium | E. faecalis | E. hirae | E. durans | E. casseliflavus | E. gallinarum | Other | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Complete feed | 57 | 47 | (82.5)A | 72 | 35 | 5 | 3 | 3 | 0 | 0 | 26 | |||||||
| Poultry feed | 24 | 18 | (75.0)a | 18 | 8 | 2 | 0 | 0 | 0 | 0 | 8 | |||||||
| Swine feed | 13 | 11 | (84.6)a | 22 | 12 | 2 | 3 | 0 | 0 | 0 | 5 | |||||||
| Cattle feed | 20 | 18 | (90.0)a | 32 | 15 | 1 | 0 | 3 | 0 | 0 | 13 | |||||||
| Feed ingredients | 275 | 147 | (53.5)B | 223 | 63 | 37 | 16 | 5 | 7 | 3 | 92 | |||||||
| Soybean meal | 81 | 62 | (76.5)a | 97 | 29 | 3 | 8 | 2 | 4 | 2 | 49 | |||||||
| Fish meal | 111 | 55 | (49.6)b | 82 | 26 | 16 | 2 | 2 | 3 | 0 | 33 | |||||||
| Poultry meal | 66 | 22 | (33.3)c | 31 | 3 | 15 | 5 | 1 | 0 | 1 | 6 | |||||||
| Meat and bone meal | 17 | 8 | (47.1)bc | 13 | 5 | 3 | 1 | 0 | 0 | 0 | 4 | |||||||
| Total (%) | 332 | 194 | (58.4) | 295 | 98 | (33.2) | 42 | (14.2) | 19 | (6.4) | 8 | (2.7) | 7 | (2.4) | 3 | (1.0) | 118 | (40.0) |
P-values were determined using Fisher’s exact test. Percentages followed by different uppercase letters (A or B) were significantly different (p < 0.05) for the prevalence between complete feed and feed ingredients. Percentages followed by different lowercase letters (a, b, or c, but not bc) were significantly different (p < 0.05) for the prevalence within complete feed or feed ingredients.