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dc.contributor.authorAlava, Veronica R.
dc.contributor.authorLucero, Marjorie Aijee
dc.contributor.authorSumile, Jony D.
dc.contributor.authorParado-Estepa, Fe D.
dc.contributor.editorQuinitio, Emilia T.
dc.contributor.editorParado-Estepa, Fe Dolores
dc.contributor.editorColoso, Relicardo M.
dc.date.accessioned2017-08-25T09:01:40Z
dc.date.accessioned2017-08-25T16:32:09Z
dc.date.available2017-08-25T09:01:40Z
dc.date.available2017-08-25T16:32:09Z
dc.date.issued2017
dc.identifier.citationAlava, V. R., Lucero, M. A., Sumile, J. D., & Parado-Estepa, F. D. (2017). Nursery culture of mud crab Scylla serrata fed diets supplemented with trytophan at two stocking densities. In E. T. Quinitio, F. D. Parado-Estepa, & R. M. Coloso (Eds.), Philippines : In the forefront of the mud crab industry development : proceedings of the 1st National Mud Crab Congress, 16-18 November 2015, Iloilo City, Philippines (p. 147). Tigbauan, Iloilo, Philippines: Aquaculture Department, Southeast Asian Fisheries Development Center.en
dc.identifier.isbn9789719931072
dc.identifier.urihttp://hdl.handle.net/10862/3182
dc.descriptionAbstract only.en
dc.description.abstractCannibalism has been recognized as one of the major problems in crab culture. The use of dietary tryptophan (TRP) that has been reported to reduce cannibalism in crabs under laboratory conditions was verified in pond nursery culture at two stocking densities. The first phase used hatchery-produced early crab instar. After 3-4 weeks, survivors were sorted and the small size crabs were further reared in the second phase. Crabs were stocked in 12-m2 net cages installed in brackishwater pond and fed three times daily at 0830, 1300 and 1630 h. The feeding scheme used was a combination of mussel meat (M) and formulated diet (FD) at 30:70 ratio. The original FD contained 45% crude protein (used in Experiment 1, 2 and 3) that was lowered to 40% crude protein in the new basal diet used in the succeeding experiment. The two TRP-supplemented diets had 0.5% and 0.7% TRP levels. Results showed that the TRP-supplemented feeds did not give consistent results in terms of growth and feed conversion ratio, indicating that the original basal diet (0.4% TRP and 45% crude protein) or the new basal diet (0.4% TRP and 40% crude protein) were sufficient to be used together with mussel meat as feed for crab juveniles. Higher survival rates were obtained at 50 m-2 (phase 1) and 10 m-2 (phase 2) than at 30 m-2 and 5 m-2 stocking density, respectively. All trial runs produced positive returns on investment.en
dc.language.isoenen
dc.publisherAquaculture Department, Southeast Asian Fisheries Development Centeren
dc.subjectScylla serrataen
dc.subjectPhilippinesen
dc.titleNursery culture of mud crab Scylla serrata fed diets supplemented with trytophan at two stocking densitiesen
dc.typeConference paperen
dc.citation.spage147
dc.citation.conferenceTitlePhilippines : In the forefront of the mud crab industry development : proceedings of the 1st National Mud Crab Congress, 16-18 November 2015, Iloilo City, Philippinesen
dc.subject.asfabrackishwater aquacultureen
dc.subject.asfacage cultureen
dc.subject.asfacannibalismen
dc.subject.asfacrab cultureen
dc.subject.asfadieten
dc.subject.asfafeedsen
dc.subject.asfafeed efficiencyen
dc.subject.asfafeeding experimentsen
dc.subject.asfamarine crustaceansen
dc.subject.asfapond cultureen
dc.subject.asfastocking densityen
dc.subject.asfasurvivalen
dc.subject.scientificNameScylla serrataen


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