| Main ref. | 131 | ||
| Country | Sri Lanka |
||
| Name of Farm | Puttalam, Sri Lanka |
Year |
|
| Latitude |
|
Altitude (m) |
|
| Longitude | |||
| Type of culture | monoculture |
Sex of fish (m) |
mixed sex |
| Culture system | experimental pens |
||
Punttalam lagoon. |
|||
| Production units | 1 |
Area (ha) |
0.25 |
| Depth (m) | Volume3 |
||
| Main water source | lagoon |
Supplemental water source |
rainfall |
Temp (0C) |
Salinity |
pH |
Oxygen (mg/I) |
Oxygen (%) |
Alkalinity (mg/I CaCO3) |
|
Max |
31.5 |
5 |
6.5 |
16.8 |
||
Min |
25.5 |
8 |
4 |
|||
Mod |
28.5 |
7.3 |
10.4 |
Description of culture system |
The culture site was in Puttalam lagoon. Fingerlings obtained from nursery pens were stocked in two pens and fed with low cost feeds. |
Nutrient inputs |
|
Main food |
only added feed |
Feed quantity |
|
(% BW/D): |
|
Feed quality (% crued protein) |
|
Fertilizer input (N) |
|
(P) |
|
Description of Nutrient input |
The fish were fed artificial feed of 20 % protein consisting of rice bran and fish meal used at a ratio of 8:2. The manually mixed feed was given daily at 3 % of the body weight. |
Production |
|
| Unit cycle | |
| Production period | 190 |
| Production cycle | 28 |
Comments |