A mixed culture trail of mud crab (Scylla serrata Forskal) with tilapia ( Oreocromis niloticus L.)
A ten-month study on mixed culture of mud crab Scylla serrata with tilapia(Oreochromis niloticus) was performed in brackish water earthen ponds using live tilapiafry as the only feed for crab. The monthly growth rate varied from 9.07-19.llg amongfour treatments. Treatment T 1, cw: 0.68cm (±0.72) and bw: 19.11 gm (±12.97) showedhighest performance which was followed by T 3, cw: 0.62cm (±0.60) and bw: 13.42 gm(±10.51), T4, cw: 0.65cm (±0.64) and bw: 13.20 gm (±9.89) and T2, cw: 0.36cm (± 0.25) andbw: 9.07 gm (±8.05). Highest survivability of crabs was also recorded in T 1 (21.5%) whichwas followed by T 2 (15.65%), T4 (14.95%) and T 3 (14.15%). In terms of survivability,significant differences (p<0.05) were observed among the treatments whereas these wererecorded as insignificant difference (p<0.05) in final weight, weight gain and productionof crabs and tilapia. Mixed culture of mud crab with tilapia could make more rewardingthan crab monoculture but the study suggests that only tilapia fry can not fulfill the feedrequirement of crabs in respects of survivability, final body weight and weight gain.Besides, existed salinity level of 4-12 ppt during experimental period might be theanother key factor for low survivability and weight gain.
| Main Authors: | , , |
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| Format: | article biblioteca |
| Language: | English |
| Published: |
2004
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| Subjects: | Aquaculture, Fisheries, Mud crab, Tlapia, Mixed culture, Salinity Bone phosphorus, |
| Online Access: | http://hdl.handle.net/1834/33172 |
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