| Main ref. | 3172 | ||
| Country | Hong Kong |
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| Name of Farm | Agriculture and Fisheries Department |
Year |
1978 |
| Latitude |
|
Altitude (m) |
|
| Longitude | |||
| Type of culture | polyculture |
Sex (m) |
mixed sex |
| Culture system | experimental ponds |
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Cultured strain in ponds. |
|||
| Production units | 1 |
Area (ha) |
14.84 |
| Depth (m) | 1 |
Volume3 |
|
| Main water source | rainfall |
Supplemental water source |
|
Temp (0C) |
Salinity |
pH |
Oxygen (mg/I) |
Oxygen (%) |
Alkalinity (mg/I CaCO3) |
|
Max |
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Min |
||||||
Mod |
Description of culture system |
Hongkong strain and wild race of common carp (Hongkong = 437 and wild carp = 443) were stocked in a 674 m2 earthen pond filled to a depth of approximately 1 m with rainwater under both aerated and unaerated conditions. |
Nutrient inputs |
|
Main food |
in-situ production + added feed |
Feed quantity |
|
(% BW/D): |
3 |
Feed quality (% crued protein) |
25 |
Fertilizer input (N) |
|
(P) |
|
Description of Nutrient input |
Fish were fed daily with pelleted feed containing 25% protein. |
Production |
|
| Unit cycle | |
| Production period | 335 |
| Production cycle | 272 |
Comments |
Grown with silver carp, bighead carp, grass carp, grey mullet and tilapia. Only stocking densities for the other fishes were given. |