Citation
Ang K.J., . and Cheng E.M., . (1997) Environmental factors affecting Macrobrachium rosenbergii de man grow and maturity. [Proceedings Paper]
Abstract
A study was conducted to investigate the environmental factor affecting M. rosenbergii growth and maturity. M. rosenbergii juveniles 0.17-0.078 g in weight and 2.34-0.35 cm in orbital length were cultured at a density of 100/m2 in a 107/m2 concrete tank at the Faculty of the Fisheries and Marine Science UPM Malaysia. After 11 weeks in the tank only 9.41 of the prawns survived and their body weight and orbital length were 0.793-0.900 g and 3.50-0.95 cm respectively. The prawns were then stocked into an earthen pond 442m2 at a density of 2.13/ m2. Despite being stunted for 11 weeks after 76 days in the pond the prawns had grown to 19.92-7.01 g. Since normal prawns cultured in the same pond for about 77 days at 10/ m2 could reach 20 g in weight and some became berried at this age and this strongly indicates that maturity of the prawn is determined by the size rather than the age. After 141 days 20 weeks in the earthen pond the prawns had reached a mean weight of 41.11-14.23 g. and orbital length of 11.38-9.04 cm. Approximately 40 of the prawns were berried. Average growth rate of 0.264 g/day was obtained. Thus environment habitat is the main factor controlling the growth of M. rosenbergii. This study suggests that it is possible to keep M. rosenbergii juveniles in the nursery with controlled growth for a considerable period time before being introduced into the grow-out earthen pond at the desirable time.
Download File
Full text available from:
|
Abstract
A study was conducted to investigate the environmental factor affecting M. rosenbergii growth and maturity. M. rosenbergii juveniles 0.17-0.078 g in weight and 2.34-0.35 cm in orbital length were cultured at a density of 100/m2 in a 107/m2 concrete tank at the Faculty of the Fisheries and Marine Science UPM Malaysia. After 11 weeks in the tank only 9.41 of the prawns survived and their body weight and orbital length were 0.793-0.900 g and 3.50-0.95 cm respectively. The prawns were then stocked into an earthen pond 442m2 at a density of 2.13/ m2. Despite being stunted for 11 weeks after 76 days in the pond the prawns had grown to 19.92-7.01 g. Since normal prawns cultured in the same pond for about 77 days at 10/ m2 could reach 20 g in weight and some became berried at this age and this strongly indicates that maturity of the prawn is determined by the size rather than the age. After 141 days 20 weeks in the earthen pond the prawns had reached a mean weight of 41.11-14.23 g. and orbital length of 11.38-9.04 cm. Approximately 40 of the prawns were berried. Average growth rate of 0.264 g/day was obtained. Thus environment habitat is the main factor controlling the growth of M. rosenbergii. This study suggests that it is possible to keep M. rosenbergii juveniles in the nursery with controlled growth for a considerable period time before being introduced into the grow-out earthen pond at the desirable time.
Additional Metadata
| Item Type: | Proceedings Paper |
|---|---|
| AGROVOC Term: | MACROBRACHIUM ROSENBERGII |
| AGROVOC Term: | PRAWNS AND SHRIMPS |
| AGROVOC Term: | ENVIRONMENTAL FACTORS |
| AGROVOC Term: | GROWTH |
| AGROVOC Term: | MATURITY |
| AGROVOC Term: | WATER QUALITY |
| AGROVOC Term: | MALAYSIA |
| Geographical Term: | MALAYSIA |
| Depositing User: | Ms. Norfaezah Khomsan |
| Last Modified: | 24 Apr 2025 05:27 |
| URI: | http://webagris.upm.edu.my/id/eprint/16028 |
Actions (login required)
 |
View Item |
