| Main ref. | 166 | ||
| Country | USA |
||
| Name of Farm | Alabama Agricultural Experiment. Station, Alabama |
Year |
1983 |
| Latitude |
|
Altitude (m) |
|
| Longitude | |||
| Type of culture | monoculture |
Sex of fish (m) |
mixed sex |
| Culture system | experimental other |
||
Ghana strain used. |
|||
| Production units | 1 |
Area (ha) |
|
| Depth (m) | 2.1 |
Volume3 |
0.158 |
| Main water source | reservoir |
Supplemental water source |
|
Temp (0C) |
Salinity |
pH |
Oxygen (mg/I) |
Oxygen (%) |
Alkalinity (mg/I CaCO3) |
|
Max |
||||||
Min |
14.1 |
|||||
Mod |
Description of culture system |
Forty fingerlings (`Ghana strain') stocked in a 0.25 x 0.30 x 2.1 m stainless steel trough were used in an experiment to compare cold tolerance among different strains. The mean lower lethal temperature was determined for each strain. |
Nutrient inputs |
|
Main food |
|
Feed quantity |
|
(% BW/D): |
|
Feed quality (% crued protein) |
40 |
Fertilizer input (N) |
|
(P) |
|
Description of Nutrient input |
Fish were fed ad libitum daily with 40% protein pelleted feed. |
Production |
|
| Unit cycle | |
| Production period | 41 |
| Production cycle | 275 |
Comments |