Evaluation of performance of different tilapia species

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dc.contributor.authorChenyambuga, Sebastian W
dc.contributor.authorMeiluidie, Ester
dc.contributor.authorMadalla, Nazael
dc.contributor.authorMnembuka, Berno V
dc.contributor.authorLochmann, Rebecca
dc.date.accessioned2023-04-18T08:30:58Z
dc.date.available2023-04-18T08:30:58Z
dc.date.issued2011
dc.descriptionInvestigation Reporten_US
dc.description.abstractA growth trial was carried out for 90 days to compare the growth performance and survival rate of Nile tilapia (Oreochromis niloticus) and Jipe tilapia (Oreochromis jipe), Wami tilapia (Oreochromis urolepis hornorum) and Ruvuma tilapia (Oreochromis ruvumae).. The study was conducted on-station at Sokoine University of Agriculture (SUA) and on-farm in ponds of small-scale fish farmers at Mkuyuni, Morogoro, Tanzania. In the on-farm experiment, the mean final weight, weight gain, growth rate, final length and final width differed significantly (P<0.001) among the species. Nile tilapia (O. niloticus) gained more weight (61.3g) than O. hornorum (35.3g) and O. ruvumae (13.8g). The final weight, length and width of O. niloticus exceeded that of O. hornorum by 26.2g, 2.4cm and 0.7cm, respectively. The mean final weight, length and width of O. hornorum were higher than those of O. ruvumae by 23.6g, 2.7cm and 1cm, respectively. The results from the on-station experiment showed that there was no significant (P>0.05) difference between O. niloticus and O. hornorum, but the two species differed significantly (P<0.01) from O. ruvumae and O. jipe. The O. niloticus had the highest weight gain (24.2 g), growth rate (0.3g/d), final length (11.5cm) and final width (3.3cm) and it was followed by O. hornorum. The O. ruvumae and O. jipe showed poor performance in all parameters. The growth performances of O. niloticus and O. hornorum were significantly (P<0.05) higher in the on-farm experiment than in the on-station experiment, but that of O. ruvumae were not significantly (P≥0.05) different between the two locations. The highest survival rates (85.6% (on-farm) and 100% (on-station)) were observed on O. niloticus, followed by O. ruvumae. Oreochromis urolepis hornorum had the lowest survival rate (63.5 – 66.7%) in both experiments. For all species, fish reared at the on-station showed higher survival rate (66.7 – 100%) compared to those reared in farmers’ ponds (63.5 – 85.6%). The results for chemical composition of the fish bodies indicated that the species did not differ significantly in dry matter (DM) and ash contents, but differed significantly (P<0.05) in crude protein (CP) and fat (EE) contents for the on-farm experiment. Oreochromis urolepis hornorum had the highest CP content (58.09%) and EE (30.12%) while O. niloticus had the lowest values (52.23% CP and 16.83% EE). For the on-station experiment, the DM, CP and ash contents of the species were not significantly (P≥0.05) different. It is concluded that Oreochromis niloticus is superior to Oreochromis urolepis hornorum, Oreochromis jipe, and Oreochromis ruvumae in terms of growth performance and survival rate.en_US
dc.identifier.urihttp://www.suaire.sua.ac.tz/handle/123456789/5199
dc.language.isoenen_US
dc.publisherUniversity of Arkansasen_US
dc.subjectPerformanceen_US
dc.subjectTilapiaen_US
dc.subjectSpeciesen_US
dc.titleEvaluation of performance of different tilapia speciesen_US
dc.title.alternativeQuality Seedstock Development/Experiment/09QSD04PUen_US
dc.typeTechnical Reporten_US

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