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dc.creatorFortes‐Silva, Rodrigo-
dc.creatorCosta, Leandro S.-
dc.creatorPaulino, Renan R.-
dc.creatorRodrigues, Edgar J. D.-
dc.creatorSanchez‐Vazquez, Francisco J.-
dc.creatorRosa, Priscila V.-
dc.date.accessioned2019-02-22T16:29:09Z-
dc.date.available2019-02-22T16:29:09Z-
dc.date.issued2017-07-
dc.identifier.citationFORTES-SILVA, R. et al. Hybrid fish model (Pseudoplatystoma reticulatum♀ × Leiarius marmoratus♂) to study feeding behaviour: protein source self‐selection and demand‐feeding rhythms. Aquaculture Research, Oxford, v. 48, n. 7, p. 3705-3718, July 2017.pt_BR
dc.identifier.urihttps://onlinelibrary.wiley.com/doi/full/10.1111/are.13196pt_BR
dc.identifier.urihttp://repositorio.ufla.br/jspui/handle/1/32954-
dc.description.abstractWe report feeding studies on hybrid fish (carnivorous × omnivorous) to determine the interactions between protein sources during diet selection trials. We also examined behavioural rhythms (feeding and locomotor activity) using a self‐feeding system mounted with a feeder connected to an infrared photocell. Twenty fish (28.20 ± 0.05 g) were distributed in four aquariums (50 L each). First, the system was tested to evaluate the adaptation of catfish (Pseudoplatystoma reticulatum × Leiarius marmoratus) to self‐feeding (step I). During this 28‐day period, feeding and locomotor activity rhythms were recorded. In the second step, to analyse protein self‐selection, a group of 20 fish (19.10 ± 0.05 g) was released in the aquaria. The hybrid catfish were given free access to diets (soya bean meal protein (SP) vs. bovine liver protein (BP)) through two self‐feeders. The same procedure was used for (SP) vs. fish meal protein (FP). The catfish learned to activate the feeders to demand a daily feed amount equivalent to 1.8% of their body weight. The fish performed most of their actions (89.0% feeding activity and 94.1 0% locomotor activity) in the night. The diet choice by the catfish became clearer with a significantly lower intake of BP (0.37 g per 100 g body weight, 24.6%) vs. SP (1.06 g per 100 g body weight, 75.4%) and SP (0.61 g per 100 g body weight, 38.9%) vs. FP (0.91 g per 100 g body weight, 61.1%). These findings should be considered when discussing feeding behaviour, nutritional targets and protein sources for future aquaculture feeds.pt_BR
dc.languageen_USpt_BR
dc.publisherWileypt_BR
dc.rightsrestrictAccesspt_BR
dc.sourceAquaculture Researchpt_BR
dc.subjectFeeding schedulept_BR
dc.subjectNutritional targetpt_BR
dc.subjectProtein sourcept_BR
dc.subjectHorário de alimentaçãopt_BR
dc.subjectAlvo nutricionalpt_BR
dc.subjectFonte de proteínapt_BR
dc.titleHybrid fish model (Pseudoplatystoma reticulatum♀ × Leiarius marmoratus♂) to study feeding behaviour: protein source self‐selection and demand‐feeding rhythmspt_BR
dc.typeArtigopt_BR
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