SOME BIOLOGICAL STUDIES ON PERFORMANCE OF NILE TILAPIA (OREOCHROMIS NILOTICUS) FED ON DIFFERENT DIETS | ||||
| Egyptian Journal of Agricultural Research | ||||
| Article 22, Volume 83, Issue 4, December 2005, Page 1797-1808 PDF (2.35 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejar.2005.255223 | ||||
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| Author | ||||
| ESSAM M. IBRAHIM | ||||
| Central Laboratory For Aquaculture Research (CZAR) Abbassa, Agricultural Research Center, Ministry of Agriculture, Dokki, Giza, Egypt | ||||
| Abstract | ||||
| Net fish production and growth performances of Nile tilapia (Oleochromis niloticus) were studied in ponds treated either with complete feed alone, supplementary feeding alone or a combination of complete and supplementary feeding compared to a control ( natural feeding ) treatment. Four treatments were applied in this study, each treatment was carried out in two pond replicates, 1000 m2 (50 x 20 m) each and one meter water column. The first treatment received complete fish feed (22% proteln)at a rate of 3 % daily of fresh fish body weight (T1). The second treatment received supplemental feeding cattle feed ( 11% protein ) at a rate of 3 % daily of fresh fish body weight (12). The third treatment received complete fish feed plus supplemental feed at a rate of 1.5% daily of fresh fish body weight:The fourth treatment (control) (T4) did not receive any commercial feed (natural feeding). Anal weight of tilapia averaged 193.4, 138.02, 167.3 and 110.79 g / fish in the complete feed (fish feed) alone, supplementary feeding (cattle feed) alone, complete and supplementary feeding and natural feeding ponds, respectively. Net production of tilapia averaged 530,1, 376.5, 457.7, and 298.89 kg/pond in these extensive fish culture treatments, respectively. Results indicated superior tiapia growth and total production in complete fish feed ponds. This system may be recommended for extensive local fish farming. | ||||
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