Table 1. Comparisons of aquaculture status of Silurus asotus farm at the monitoring sites from 2017 to 2019
| 2017 | 2018 | 2019 |
| Introduction |
| Culture type | Outdoor fish farm |
| Pond size (m2) | 3,305 |
| Water circulation | Less than 1 time for day |
| Feed type | Commercial feed |
| Stock | |
| Culture periods (days) | 305 | 276 | 166 |
| Feeding periods (days) | 159 | 150 | 166 |
| Feed consumption (kg) | 32,982 | 28,217 | 40,100 |
| Average body weight (g) | 6.67 | 3.85 | 10.00 |
| Total plant amount (kg) | 566.67 | 307.69 | 890.00 |
| Stock density (kg/m2 | 0.17 | 0.09 | 0.26 |
| Sale |
| Average body weight (g) | 392.5 | 385.7 ± 125.1 | 324.3 ± 90.2 |
| Total sales amount (kg) | 27,000 | 20,160 | 30,000 |
| Stock density (kg/m2) | 8.17 | 6.10 | 9.08 |
| Growth performance |
| WGR (%) | 4,664.7 | 6,452.0 | 3,270.0 |
| SGR (%)1) | 1.27 | 1.52 | 1.11 |
| SGR (%)2) | 2.43 | 2.79 | 2.12 |
| FCR | 1.25 | 1.42 | 1.38 |
WGR = (final weight – initial weight) / initial weight × 100%.
SGR = (ln final weight – ln initial weight) / days × 100%.
FCR = feed consumption / unit weight of increase.
SGR for culture periods.
SGR for feeding periods.
WGR, weight gain rate; SGR, specific growth rate; FCR, feed coefficient rate.