Table 1.
Summary of the experiment, fish growth characteristics, and histopathological analyses.
| YTK group | ||||
|---|---|---|---|---|
| Factors | Wild-caught | Healthy | Early enteritis | Late enteritis |
| No. fish | 3 | 12 | 12 | 12 |
| Cage ID | – | A | B | B |
| Fork length (cm) | 67.7 ± 6.3 | 61.4 ± 3.1 | 59.7 ± 2.5 | 49.3 ± 3.2 |
| Weight (kg) | 3.9 ± 1.1 | 3.4 ± 0.6 | 3.0 ± 0.3 | 1.4 ± 0.2 |
| Fulton’s condition factor (K) | 1.2 ± 0.1 | 1.5 ± 0.1 | 1.4 ± 0.2 | 1.2 ± 0.2 |
| Skin thickness (μm)a | 70.2 ± 12.9 | 67.8 ± 12.3 | 57.3 ± 14.0 | 49.3 ± 12.0 |
| Skin thickness (no. cells)a | 9.3 ± 1.9 | 9.8 ± 1.7 | 8.5 ± 1.2 | 6.8 ± 1.7 |
| Total no. goblet cellsa | 4.5 ± 0.6 | 5.5 ± 1.6 | 3.3 ± 1.2 | 2.2 ± 1.1 |
| No. acidic goblet cellsa | 3.9 ± 0.3 | 4.0 ± 1.2 | 2.3 ± 1.1 | 1.3 ± 0.7 |
| No. neutral goblet cellsa | 0.5 ± 0.8 | 1.5 ± 0.9 | 1.0 ± 0.5 | 0.9 ± 0.8 |
| Blood fluke viable egg countb | 0 (0–1) | 1.5 (0–39) | 0 (0–40) | 9.5 (0–60) |
| Epitheliocystis countb | 1 (0–1) | 0 (0–1) | 0 (0–3) | 0 (0–7) |
Means and standard deviations are presented, except for blood fluke viable egg and epitheliocystis counts where median and range are given. aPer each 100 μm section; bper primary lamellae.