| More info | Plus d'info | Mais info |
| Main ref. | 131 | ||
| Country | Sri Lanka |
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| Name of Farm | Puttalam, Sri Lanka |
Year |
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| Latitude |
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Altitude (m) |
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| Longitude | |||
| Type of culture | monoculture |
Sex of fish (m) |
mixed sex |
| Culture system | experimental pens |
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Punttalam lagoon. |
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| Production units | 1 |
Area (ha) |
0.25 |
| Depth (m) | Volumeł |
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| Main water source | lagoon |
Supplemental water source |
rainfall |
Temp (°C) |
Salinity |
pH |
Oxygen (mg/I) |
Oxygen (%) |
Alkalinity (mg/I CaCO3) |
|
Max |
31.5 |
5 |
6.5 |
16.8 |
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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): |
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Feed quality (% crued protein) |
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Fertilizer input (N) |
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(P) |
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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 |