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Stressing stocking density and rearing time effect on whiteleg shrimp (Penaeus vannamei) reared intensively in floating cages

dc.contributorSEP-CONACYT No. 243532en-US
dc.contributorCONAPESCA-SAGARPAen-US
dc.contributorFOMIXCONACyT Sin-2005-CO1-04)en-US
dc.contributorCECYT.en-US
dc.creatorCampa-Córdova, Ángel I.
dc.creatorAngulo, Carlos
dc.creatorZarain-Herzberg, Martha
dc.creatorPacheco-Marges, Rosario
dc.creatorAscencio, Felipe
dc.creatorGuzmán-Murillo, María A.
dc.creatorSánchez-Ortiz, Ana C.
dc.creatorHernández-Llamas, Alfredo
dc.date2022-05-01
dc.date.accessioned2022-07-06T15:31:49Z
dc.date.available2022-07-06T15:31:49Z
dc.identifierhttp://lajar.ucv.cl/index.php/rlajar/article/view/vol50-issue2-fulltext-2814
dc.identifier10.3856/vol50-issue2-fulltext-2814
dc.identifier.urihttps://revistaschilenas.uchile.cl/handle/2250/193817
dc.descriptionThe stressing effect of stocking density and rearing time was assessed on shrimp Penaeus vannamei reared intensively in floating cages. Juvenile shrimp were stocked in 9 m2 cages at 200, 250, and 300 ind m-2 for a 25-day grow-out period. Total soluble protein concentration, superoxide dismutase (SOD), and catalase (CAT) activities were used as stress indicators in shrimp muscle, hepatopancreas, and hemocytes. Two-way ANOVA showed that protein content in hepatopancreas significantly decreased as stocking rate increased (from 3.81 to 2.26 mg mL-1). Density and rearing time interacted significantly to determine SOD activity in muscle and hemocytes where the maximum activity occurred at the densest rate by the end of the study (10.21 and 122.41 U mg-1); CAT activity in hepatopancreas was significantly lower when the highest density (4.1 U mg-1) was used. Final shrimp weight (5.28-5.49 g), survival (90.2-91.9%), feed conversion ratio (0.75-0.78), specific (0.058-0.063), and absolute (1.17-1.30 g week-1) growth rates were not significantly affected by density, although yields varied significantly (0.99-1.49 kg m-2). To conclude, despite the stocking rate causing a stressing effect on shrimp, its antioxidant enzymatic activity prevented such development from negatively affecting shrimp growth, survival, feed conversion ratio, and production.en-US
dc.formatapplication/pdf
dc.languageeng
dc.publisherPontificia Universidad Católica de Valparaísoen-US
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/view/vol50-issue2-fulltext-2814/1548
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol50-issue2-fulltext-2814/2200
dc.relationhttp://lajar.ucv.cl/index.php/rlajar/article/downloadSuppFile/vol50-issue2-fulltext-2814/2201
dc.rightsCopyright (c) 2022 Latin American Journal of Aquatic Researchen-US
dc.sourceLatin American Journal of Aquatic Research; Vol 50, No 2 (2022); 158-167en-US
dc.sourcePlataforma para envío de artículos - Latin American Journal of Aquatic Research; Vol 50, No 2 (2022); 158-167es-ES
dc.source0718-560X
dc.source0718-560X
dc.subjectOxidative stress; stocking density; antioxidants; Litopenaeus vanammeien-US
dc.titleStressing stocking density and rearing time effect on whiteleg shrimp (Penaeus vannamei) reared intensively in floating cagesen-US
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.typeen-US
dc.typees-ES


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