Growth of two tilapias in floating plastic cages
2009
Dada, A.A.
A growth trial of Oreochromis niloticus and Sarotherodon galilaeus fingerlings in floating plastic cages was carried out for 180 days. O. niloticus (mean wt., 75 ~C 0.50g) and S. galilaeus (mean wt., 36.40~c 1.80g) were stocked at 250 fish fingerlings/m3. The study was conducted in four 2x2xl m plastic cages with two replicate cages for each treatment. A 25% protein balanced diet was used as feed. The mean weight gain ranged from 0.33 to 0.91g/day while the mean final weight ranged from 60.0g to 162.00g for O. niloticus and S. galilaeus, respectively. Total fish production ranged from 15.90 to 16.00kg/m3. The highest survival (100%) was obtained in 0. niloticus while the lowest (98.4%) was obtained in S. galilaeus. The major constraint in the study was the inadequacy of suitable fingerlings size for stocking the plastic cages.
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