Table 1.
Biometric and blood parameters
| a) | start | 1.5-mnths rest | 1.5-mnths rest and CPE | |
|---|---|---|---|---|
| BL (cm) | 76 ± 2 | 76 ± 2 | 76 ± 2 | |
| BW (g) | 753 ± 44 | 716 ± 43 | 715 ± 45 | |
| K | 0.169 ± 0.006 | 0.161 ± 0.006 | 0.160 ± 0.006 | |
| EI | 15.2 ± 0.5 | 15.0 ± 0.5 | 15.4 ± 0.4 | |
| PFLI | 5.53 ± 0.17 | 5.49 ± 0.15 | 5.45 ± 0.15 | |
| PFWI | 2.99 ± 0.10 | 2.98 ± 0.13 | 3.06 ± 0.16 | |
| Is | 5 | 5 | 5 | |
| Ca (mM) | 2.45 ± 0.03 | 2.40 ± 0.07 | 3.45 ± 0.03 | |
| b) | start | 1.5-mnths swim | 1.5 mnths swim and CPE | |
| BL (cm) | 77 ± 2 | 77 ± 2 | 77 ± 2 | |
| BW (g) | 770 ± 87 | 733 ± 76 | 744 ± 81 | |
| K | 0.169 ± 0.005 | 0.161 ± 0.005 | 0.163 ± 0.006 | |
| EI | 14.1 ± 1.1 | 14.6 ± 1.5 | 14.8 ± 1.3 | |
| PFLI | 5.41 ± 0.04 | 5.42 ± 0.09 | 5.36 ± 0.12 | |
| PFWI | 2.82 ± 0.14 | 2.85 ± 0.08 | 2.83 ± 0.10 | |
| Is | 5 | 5 | 5 | |
| Ca (mM) | 2.51 ± 0.08 | 2.36 ± 0.03 | 2.83 ± 0.20 | |
| c) | start | 3-mnths rest | 3 mnths rest and CPE | |
| BL (cm) | 75 ± 2 | 75 ± 1 | 75 ± 2 | |
| BW (g) | 678 ± 36 | 621 ± 16 | 623 ± 35 | |
| K | 0.163 ± 0.008 | 0.149 ± 0.004 | 0.149 ± 0.007 | |
| EI | 14.7 ± 0.7 | 13.8 ± 0.3 | 15.0 ± 0.4 | |
| PFLI | 5.32 ± 0.05 | 5.37 ± 0.02 | 5.11 ± 0.27 | |
| PFWI | 2.85 ± 0.03 | 2.76 ± 0.02 | 2.76 ± 0.06 | |
| Is | 5 | 5 | 5 | |
| Ca (mM) | 2.46 ± 0.07 | 2.42 ± 0.06 | 2.79 ± 0.20 | |
| d) | start | 3 mnths swim | 3 mnths swim and CPE | |
| BL (cm) | 76 ± 3 | 76 ± 1 | 76 ± 3 | |
| BW (g) | 849 ± 134 | 802 ± 60 | 790 ± 137 | |
| K | 0.189 ± 0.010 | 0.178 ± 0.005 | 0.175 ± 0.012 | |
| EI | 15.5 ± 0.7 | 14.9 ± 0.3 | 15.6 ± 0.6 | |
| PFLI | 5.54 ± 0.14 | 5.47 ± 0.06 | 5.54 ± 0.17 | |
| PFWI | 2.75 ± 0.13 | 2.71 ± 0.06 | 2.81 ± 0.09 | |
| Is | 4.60 ± 0.24 | 4.60 ± 0.11 | 4.60 ± 0.24 | |
| Ca (mM) | 2.56 ± 0.11 | 2.35 ± 0.06 | 2.80 ± 0.25 |
a) at the start, after 1.5 months resting and after 3 subsequent CPE injections in the same eels, b) at the start, after 1.5 months swimming and after 3 subsequent CPE injections in the same eels, c) at the start, after 3 months resting and after 3 subsequent CPE injections in the same eels and d) at the start, after 3 months swimming and after 3 subsequent CPE injections in the same eels. Comparisons were made in subsequent order; rest vs. start and rest + CPE vs. rest, as paired data. Statistical significant differences at P ≤ 0.05 are given in bold.
(BL = body-length, BW = body-weight, K = condition factor, EI = eye index, PFLI = pectoral fin length index, PFWI = pectoral fin width index, Is = silver index, Ca = calcium).