Frozen zooplankton is efficient as natural food during pirarucu Arapaima gigas weaning

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dc.contributor.authorLima, Adriana Ferreira
dc.contributor.authorRodrigues, Ana Paula Oeda
dc.contributor.authorCosta, Vladimir Eliodoro [UNESP]
dc.contributor.institutionEmpresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2021-06-25T15:01:10Z
dc.date.available2021-06-25T15:01:10Z
dc.date.issued2021-04-06
dc.description.abstractThe commercial production of carnivorous fish depends on the feed training that can be made through the direct transition from natural food to inert food. As using live natural food requires care in production, alternative methods of using live food are necessary, such as freezing. Thus, the aim of this study was to evaluate the use of frozen zooplankton as an initial diet in the feed training of pirarucu Arapaima gigas juveniles. Three hundred and twenty pirarucu juveniles (13.94 +/- 4.99 g) were submitted to weaning with two different initial diets (treatments): live zooplankton and frozen zooplankton. The co-feeding period was 12 days, with a progressive increase in the amount of feed offered and a decrease in zooplankton every three days. At the end of the training, all fish were ready to be fed with commercial feed. There was no mortality in the experiment and no significant differences (p > 0.05) for weight, length, weight variation coefficient, specific growth rate, intestinal coefficient, hepatosomatic index, muscle layer thickness and height of the branched folds intestinal mucosa, moisture, crude protein and carcass energy for fish that received live or frozen zooplankton as a starter. Isotopic values of delta N-15 and delta C-13 in the fish's muscle were similar (p > 0.05), reinforcing no feeding preference of the fish between the live or frozen zooplankton. The water quality was not influenced by the use of initial diet (p > 0.05). The frozen zooplankton can be used as initial food for pirarucu juveniles feed training, without impairing fish growth and survival.en
dc.description.affiliationEmbrapa Pesca & Aquicultura, NS 10,Cruzamento Com 18, Palmas, Tocantins, Brazil
dc.description.affiliationUniv Estadual Paulista, Ctr Isotopos Estaveis, Sao Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Ctr Isotopos Estaveis, Sao Paulo, Brazil
dc.description.sponsorshipBrazilian Micro and Small Business Support Service
dc.description.sponsorshipIdBrazilian Micro and Small Business Support Service: 37/2018
dc.format.extent10
dc.identifierhttp://dx.doi.org/10.1111/are.15261
dc.identifier.citationAquaculture Research. Hoboken: Wiley, 10 p., 2021.
dc.identifier.doi10.1111/are.15261
dc.identifier.issn1355-557X
dc.identifier.urihttp://hdl.handle.net/11449/210198
dc.identifier.wosWOS:000637223400001
dc.language.isoeng
dc.publisherWiley-Blackwell
dc.relation.ispartofAquaculture Research
dc.sourceWeb of Science
dc.subjectfrozen zooplankton
dc.subjectintestine morphometry
dc.subjectlive zooplankton
dc.subjectproximate composition
dc.subjectstable carbon isotope
dc.subjectstable nitrogen isotope
dc.titleFrozen zooplankton is efficient as natural food during pirarucu Arapaima gigas weaningen
dc.typeArtigo
dcterms.licensehttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dcterms.rightsHolderWiley-Blackwell

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