TABLE 3.
Effects of CMs on heterotrophic aerobic bacteria in naturally infected oysters
| Expt no. | CM treatment (%) | Concn of heterotrophic aerobic bacteria in oysters (no. of mean log CFU/g ± SD)a |
||
|---|---|---|---|---|
| Pretreatment | Day 1 | Day 2 | ||
| 1 | 0.0 (control) | 6.96 ± 0.13 | 6.91 ± 0.10 | 6.11 ± 0.30 |
| 0.1 | 4.68 ± 0.28b | 4.33 ± 0.52b | ||
| 0.3 | 4.32 ± 0.69b | 3.89 ± 0.48b | ||
| 0.5 | 4.27 ± 0.41b | 2.75 ± 0.67c | ||
| 2 | 0.0 (control) | 5.69 ± 0.30 | 5.43 ± 0.23 | 5.31 ± 0.21 |
| 0.1 | 4.28 ± 0.33b | 3.89 ± 0.27b | ||
| 0.3 | 3.72 ± 0.27b | 3.01 ± 0.31b | ||
| 0.5 | 3.11 ± 0.43b | 2.16 ± 0.30b | ||
| 3 | 0.0 (control) | 5.40 ± 0.47 | 4.83 ± 0.27 | 4.90 ± 0.36 |
| 0.1 | 3.93 ± 0.61b | 3.66 ± 0.91 | ||
| 0.3 | 3.97 ± 0.39 | 3.41 ± 0.52b | ||
| 0.5 | 3.63 ± 0.73b | 3.49 ± 0.76b | ||
The number of mean log CFU/g ± standard deviation (SD) based on plate counts on LA from three independent experiments with 3 oysters in the first two experiments and 6 oysters in the third experiment for a total of 12 oysters for each experimental condition and time point.
The reduction of the heterotrophic aerobic bacterial level from the initial level is <3.52 mean log CFU/g but is significantly different from the level for the control samples treated with 0.0% CMs, as determined by two-tailed, one-way ANOVA (P < 0.05).
The reduction of the heterotrophic aerobic bacterial level from the initial level is >3.52 mean log CFU/g and is significantly different from the level for the control samples treated with 0.0% CMs, as determined by two-tailed, one-way ANOVA (P < 0.05).