Stress in pacu exposed to ammonia in water

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dc.contributor.authorAbreu, Janessa Sampaio de [UNESP]
dc.contributor.authorEsteves, Fábio Resende [UNESP]
dc.contributor.authorUrbinati, Elisabeth Criscuolo [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T13:12:43Z
dc.date.available2014-05-20T13:12:43Z
dc.date.issued2012-07-01
dc.description.abstractThe present study evaluated stress indicators in pacu exposed to ammonia in water under the following conditions: without NH4Cl (0.00 g/L); with 0.0078 g NH4Cl/L; and with 0.078 g NH4Cl/L (pH 8.3 and 27 ºC). After the salt dilution the water flow was interrupted and reestablished in 24 hours. Sampling occurred prior to the addition of NH4Cl (control) and after 12, 24 and 48 hours. Glycaemia increased only in fish with the highest salt concentration when compared with group control, regardless of time, and at 24 hours, regardless of treatment. Plasma ammonia, highest in fish exposed to the highest NH4Cl concentration, decreased progressively up to 48 hours. Plasma chloride only decreased in fish not exposed to salt when compared with control and osmolality increased after 24 hours. Hematocrit (Ht), number and volume of erythrocytes and hemoglobin did not change when NH4Cl was added; Ht decrease was reported after 12 hours, but it was not followed by the other blood parameters. The results show tolerance of the pacu to ammonia in the environment.en
dc.description.affiliationUNESP Centro de Aquicultura
dc.description.affiliationUniversidade Estadual Paulista Faculdade de Ciências Agrárias e Veterinárias
dc.description.affiliationUnespUNESP Centro de Aquicultura
dc.description.affiliationUnespUniversidade Estadual Paulista Faculdade de Ciências Agrárias e Veterinárias
dc.format.extent1555-1560
dc.identifierhttp://dx.doi.org/10.1590/S1516-35982012000700001
dc.identifier.citationRevista Brasileira de Zootecnia. Sociedade Brasileira de Zootecnia, v. 41, n. 7, p. 1555-1560, 2012.
dc.identifier.doi10.1590/S1516-35982012000700001
dc.identifier.fileS1516-35982012000700001.pdf
dc.identifier.issn1516-3598
dc.identifier.scieloS1516-35982012000700001
dc.identifier.urihttp://hdl.handle.net/11449/622
dc.identifier.wosWOS:000311559100001
dc.language.isoeng
dc.publisherSociedade Brasileira de Zootecnia
dc.relation.ispartofRevista Brasileira de Zootecnia
dc.relation.ispartofsjr0,337
dc.rights.accessRightsAcesso aberto
dc.sourceSciELO
dc.subjectcortisolen
dc.subjectfish farmingen
dc.subjectfish physiologyen
dc.subjectPiaractus mesopotamicusen
dc.subjectplasmatic ammoniaen
dc.subjectwater qualityen
dc.titleStress in pacu exposed to ammonia in wateren
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/rbz/paboutj.htm
dcterms.rightsHolderRevista Brasileira Zootecnia Brazilian Journal Animal Sci

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Jaboticabal - CAUNESP - Centro de Aquicultura da Unesp