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dc.contributor.authorPangantihon, Ma. Paz
dc.contributor.authorChiu-Chern, Yvonne
dc.contributor.authorMillamena, Oseni M.
dc.date.accessioned2011-07-18T14:19:03Z
dc.date.available2011-07-18T14:19:03Z
dc.date.issued1996
dc.identifier.urihttp://hdl.handle.net/10862/540
dc.descriptionAbstract onlyen
dc.description.abstractReproductive performance of pond-reared tiger shrimp given astaxanthin (100 mg/kg diet) and Vitamin A (20,000 IU) for 61 days was assessed in a 2x2 factorial experiment in a completely randomized design. Mean gonad index (the degree of gonadal development) of shrimp fed diets containing astaxanthin and/or vitamin A (3.08-3.30) was significantly high (P< 0.01) compared with that of the control (2.36). However, shrimp fed astaxanthin supplement had a significantly higher (P < 0.01) mean gonad index than those fed diet with vitamin A. Interconversion of both supplements was highly detectable during gonadal development of shrimp. Fecundity (3.2 - 7.3 x 10 eggs/female) and hatching rate of eggs (0.0 - 5.7%) were not significantly affected (P > 0.05) by the addition of astaxanthin and/or vitamin A in the diet. The results suggest that astaxanthin and vitamin A supplementation significantly improve gonadal development and spawning but not fecundity and hatching rate. Astaxanthin and vitamin A interconversion occurs more towards the astaxanthin pathway. Hormonal changes during eyestalk ablation could have influenced this interconversion. Further, astaxanthin is directly involved in the gonadal development of pond-reared shrimp broodstock. High maturation rate (60%), spawning rate (36%) and early occurrence of first spawning (14 days after eyestalk ablation) were observed in shrimp fed astaxanthin supplement.en
dc.publisherAquaculture Department, Southeast Asian Fisheries Development Centeren
dc.subjectPenaeus monodonen
dc.titleEffect of dietary astaxanthin and vitamin A on the reproductive performance of Penaeus monodon broodstocken
dc.typeConference paperen
dc.subject.asfadieten
dc.subject.asfafood additivesen
dc.subject.asfapond cultureen
dc.subject.asfarearing techniquesen
dc.subject.asfareproductionen
dc.subject.asfashrimp cultureen
dc.subject.asfavitamin aen
dc.subject.scientificNamePenaeus monodonen


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