The potential of mixed culture of freshwater giant prawn Macrobrachium rosenbergii de Man and tiger shrimp Penaeus monodon Fab. at Khulna region, Bangladesh
The freshwater giant prawn (golda), Macrobrachium rosenbergii and tiger shrimp (bagda),Penaeus monodon were stocked together with or without fin fishes at different stockingrates in semi-saline waters at Khulna region and their growth, survival, yield and costreturnanalysis were made. Survival rate of golda and bagda ranged from 23.0 to 36.8%and 8.2 to 24%, respectively. The both species were significantly affected by their ownstocking density. The average final weight of golda and bagda ranged from 62.4 to 73.3 gand 32.0 to 66.4 g. The bivariate analysis of average final weight of both golda and bagdarevealed that golda positively and bagda negatively influenced by the total stockingdensity. However, the results of the individual sizes of both golda and bagda showed anincrease in the proportions of smaller animals and a decrease in the proportion of largerones with increasing stocking rates. The harvesting weights of all animals in theexperimental ghers were in marketable sizes although their prices varied with theindividual size. The total production comprised of both golda and bagda ranged from514.6 to 952.8 kg ha·1, over a culture period of 10 months. Return on investment rangedfrom 51.0 to 125.7%.
| Main Authors: | , , , |
|---|---|
| Format: | article biblioteca |
| Language: | English |
| Published: |
2001
|
| Subjects: | Aquaculture, Fisheries, Polyculture, Macrobrachium rosenbergii, Penaeus monodon, Cost-return, |
| Online Access: | http://hdl.handle.net/1834/33180 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | The freshwater giant prawn (golda), Macrobrachium rosenbergii and tiger shrimp (bagda),Penaeus monodon were stocked together with or without fin fishes at different stockingrates in semi-saline waters at Khulna region and their growth, survival, yield and costreturnanalysis were made. Survival rate of golda and bagda ranged from 23.0 to 36.8%and 8.2 to 24%, respectively. The both species were significantly affected by their ownstocking density. The average final weight of golda and bagda ranged from 62.4 to 73.3 gand 32.0 to 66.4 g. The bivariate analysis of average final weight of both golda and bagdarevealed that golda positively and bagda negatively influenced by the total stockingdensity. However, the results of the individual sizes of both golda and bagda showed anincrease in the proportions of smaller animals and a decrease in the proportion of largerones with increasing stocking rates. The harvesting weights of all animals in theexperimental ghers were in marketable sizes although their prices varied with theindividual size. The total production comprised of both golda and bagda ranged from514.6 to 952.8 kg ha·1, over a culture period of 10 months. Return on investment rangedfrom 51.0 to 125.7%. |
|---|