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dc.contributor.authorPantastico, Julia B.
dc.contributor.authorBaldia, Jose P.
dc.contributor.authorReyes Jr., Deogracias
dc.contributor.editorCho, C. Y.
dc.contributor.editorCowey, C. B.
dc.contributor.editorWatanabe, T.
dc.identifier.citationPantastico, J. B., Baldia, J. P., & Reyes Jr., D. (1985). Acceptability of five species of freshwater algae to tilapia (Oreochromis niloticus) fry. In C. Y. Cho, C. B. Cowey, & T. Watanabe (Eds.), Finfish Nutrition in Asia : Methodological Approaches to Research and Development (pp. 136-144). Ottawa, Canada: International Development Research Centre.en
dc.description.abstractUnialgal cultures of Oscillatoria quadripunctulata, Chroococcus dispersus, Navicula notha, Euglena elongata, and Chlorella ellipsoidea were fed to tilapia fry for 30 days. Mean weights and survival rates of the fry were highest when given Navicula (105.6 mg, 86%) and Chroococcus (89.1 mg, 90%). Oscillatoria, a filamentous cyanophyte, showed limited acceptability to tilapia fry, possibly because of its larger size in comparison with Chroococcus. Fry fed Chlorella and Euglena did not survive at all. C14-labeled algae of the above species were fed to tilapia fry of varying ages. Assimilation rates per fry after 24 hours of feeding with a suitable algal species increased with the age of the fry. Moreover, the same trend as in the growth and survival experiments was observed, i.e., the highest assimilation rates were obtained in 40-day old tilapia fry given Navicula and Chroococcus as natural feeds. On the other hand, negligible amounts of the other three algal species tested were assimilated by tilapia fry. The above results were explained in terms of the enzyme secretion of tilapias. There seemed to be no transition stage in the feeding habit of both fry and adult tilapia. The acceptability of plant matter in the diet of even the early larval stages was demonstrated.en
dc.publisherInternational Development Research Centreen
dc.subjectTilapia cultureen
dc.subjectFood organismsen
dc.subjectAcceptance testsen
dc.subjectOreochromis niloticusen
dc.subjectOscillatoria quadripunctulataen
dc.subjectChroococcus dispersusen
dc.subjectNavicula nothaen
dc.subjectEuglena elongataen
dc.subjectChlorella ellipsoideaen
dc.subject.lccVF SP 036
dc.titleAcceptability of five species of freshwater algae to tilapia (Oreochromis niloticus) fryen
dc.typeConference paperen
dc.citation.conferenceTitleFinfish Nutrition in Asia : Methodological Approaches to Research and Developmenten

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