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dc.contributor.authorApines-Amar, Mary Jane S.
dc.contributor.authorAmar, Edgar C.
dc.contributor.authorFaisan, Joseph P., Jr.
dc.date.accessioned2015-05-19T02:01:50Z
dc.date.available2015-05-19T02:01:50Z
dc.date.issued2013
dc.identifier.citationApines-Amar, M. J. S., Amar, E. C., & Faisan Jr., J. P. (2013). Growth, plasma cortisol, liver and kidney histology, and resistance to vibriosis in brown-marbled grouper, Epinephelus fuscoguttatus fed onion and ginger. Aquaculture, Aquarium, Conservation and Legislation, 6(6), 530-538.en
dc.identifier.issn1844-8143
dc.identifier.urihttp://hdl.handle.net/10862/2230
dc.description.abstractThe health-promoting effects of dietary onion and ginger were studied in brown marbled grouper, Epinephelus fuscoguttatus. An eight-week feeding trial was conducted to evaluate the effects of dietary onion and ginger on growth, cortisol levels, histology and disease resistance in the fish. Five experimental diets were formulated to contain either onion (2%), ginger (2%), β-glucan (1%) or vitamin C (3%) and a control diet (without immunostimulants). Each diet was fed to triplicate groups of fish with an average weight of 10.85±0.69 g. Fish supplemented with either of the immunostimulants exhibited a significantly higher growth compared to the control group. Specific growth rate (SGR) and feed conversion efficiency (FCE) were significantly higher in the onion and ginger-supplemented fish than the control. Cortisol level was higher in the control compared to the immunostimulant-fed groups with onion and ginger-fed fish showing significantly lower cortisol levels. When experimentally infected with Vibrio harveyi, fish fed onion or ginger exhibited significantly reduced mortality when compared with the control and β-glucan, but not when compared with the vitamin C-fed group. Liver sections sampled 4 days postinfection showed no remarkable pathology except for the slight reduction in glycogen granules in the supplement-fed fish. The liver of non-supplemented infected fish showed necrosis, fatty globule deposition, vacuolation, and presence of short rod-shaped bacteria. Kidney sections in the supplemented groups, likewise, did not show significant pathology similar to the uninfected control, whereas those of infected control fish showed necrosis of the tubules and glomeruli resulting in severely altered morphology of the tissues and presence of bacteria in the necrotic areas. As a result of circumventing tissue damage, wound healing was faster in fish supplemented with ginger, onion, and vitamin C compared to the β-glucan and the control groups. This study showed the benefits of onion and ginger in promoting growth and alleviating stress and severity of vibriosis in grouper.en
dc.description.sponsorshipThe University of the Philippines Visayas is gratefully acknowledged for providing the research fund and the Southeast Asian Fisheries Development Center, Aquaculture Department (SEAFDEC/AQD) for the use of their research facilities.en
dc.language.isoenen
dc.publisherBiofluxen
dc.relation.urihttp://www.bioflux.com.ro/docs/2013.530-538.pdf
dc.subjectAlliumen
dc.subjectEpinephelusen
dc.subjectgroupersen
dc.subjectVibrioen
dc.subjectZingiberen
dc.subjectbeta glucanaseen
dc.subjectexperimental infectionen
dc.subjectfeed formulationsen
dc.subjectfeed supplementsen
dc.subjectgingeren
dc.subjecthealingen
dc.subjecthydrocortisoneen
dc.subjectimmunostimulantsen
dc.subjectonionsen
dc.subjectTissue ultrastructureen
dc.titleGrowth, plasma cortisol, liver and kidney histology, and resistance to vibriosis in brown-marbled grouper, Epinephelus fuscoguttatus fed onion and gingeren
dc.typeArticleen
dc.citation.volume6
dc.citation.issue6
dc.citation.spage530
dc.citation.epage538
dc.citation.journalTitleAquaculture, Aquarium, Conservation and Legislationen
dc.subject.asfaaquatic animalsen
dc.subject.asfaaquatic organismsen
dc.subject.asfavitamin Cen
dc.subject.asfablooden
dc.subject.asfadieten
dc.subject.asfadisease resistanceen
dc.subject.asfafeed efficiencyen
dc.subject.asfafeedingen
dc.subject.asfagrowth rateen
dc.subject.asfaimmunityen
dc.subject.asfakidneysen
dc.subject.asfaliveren
dc.subject.asfanecrosisen
dc.subject.asfadamageen
dc.identifier.essn1844-9166
dc.subject.scientificNameEpinephelus fuscoguttatusen
dc.subject.scientificNameVibrio harveyi
local.subjectimmunostimulanten
local.subjectonionen
local.subjectgingeren
local.subjectgrouperen


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  • AQD Journal Articles [1213]
    These papers were contributed by AQD staff to various national and international journals

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