Self-feeder systems and infrared sensors to evaluate the daily feeding and locomotor rhythms of Pirarucu (Arapaima gigas) cultivated in outdoor tanks

Mattos, Bruno Olivetti de; Filho, Eduardo César Teixeira Nascimento; Barreto, Kayck Amaral; Braga, Luís Gustavo Tavares; Fortes‐Silva, Rodrigo

doi:10.1016/j.aquaculture.2016.02.026

Cited by 24 publications

(37 citation statements)

References 38 publications

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“…The data on pirarucu feeding activity obtained herein were similar to those reported by Mattos et al (2016), who used the same self-feeding methodology, but we also noted a diurnal pattern for locomotor activity, which was not observed in previous studies. Even though pirarucu has mandatory bimodal respiration, which implies having to constantly move up to the water surface to breathe (Graham, 1997, Fernandes et al 2012, Jiang et al 2016, Lefevre et al 2016, the diurnal pattern noted for locomotor activity was evident.…”

Section: Discussionsupporting

confidence: 78%

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A new approach to feed frequency studies and protein intake regulation in juvenile pirarucu

Mattos

Filho

Santos

et al. 2017

An. Acad. Bras. Ciênc.

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This study aimed to investigate pirarucu's (Arapaima gigas) ability to trigger a self-feeding system to regulate protein intake between two standard diets that contained 39% and 49% of crude protein. The same system allowed the evaluation of daily feeding and locomotor activity rhythms. Eighteen fish (654.44±26.85g) were distributed into six 250 L tanks (3 fish/tank). Fish had free access to both diets (39% vs. 49% protein) by feeders (2 per tank), adapted to be activated by fish themselves. This system was connected to a computer system. After an adaptation period, fish learned to activate feeders and the mean food intake recorded was 2.14% of their body weight on a daily basis. Fish showed feeding (72.48%) and locomotor (72.49%) activity predominantly during the daytime, and daily variations of choice between diets, but fixed a protein intake feeding target at 44.53%. These results should be considered when discussing feeding behavior, feeding schedules and diet intake regulations.

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Section: Discussionsupporting

confidence: 78%

“…Commercial automatic feeders (Igarapé, São Paulo), were adapted with a trigger "steel line that works as a switch" placed (3 cm below water surface) (Almaida-Pagan et al 2008, Mattos et al 2016. Every time fish bite the trigger of a feeder, about 5 pellets of the corresponding experimental diet were released (on average 0.26 g).…”

Section: Animal Housingmentioning

confidence: 99%

A new approach to feed frequency studies and protein intake regulation in juvenile pirarucu

Mattos

Filho

Santos

et al. 2017

An. Acad. Bras. Ciênc.

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“…(), Caldini et al. () and Mattos, Filho, Barreto et al.,; Mattos, Filho, Santos et al.,(). It may be concluded that investigations on meal timings are important to obtain better growth performance.…”

Section: Discussionmentioning

confidence: 97%

“…The findings of Mattos, Filho, Barreto et al. () on pirarucu ( Arapaima gigas ) show that automatic feeder system can be used to design feeding regimes and also for the formulation of aquafeeds. The use of such automatic feeders activated by the fish could allow them to feed at their preferred time of feeding.…”

Section: Introductionmentioning

confidence: 99%

“…When food is periodically restricted or scheduled to a particular time each day, feeding can act as a potent synchronizer of rhythms in animals by eliciting an increase in locomotor activity before mealtimes (Ce et al, 2016;Mattos, Filho, Barreto, Braga & Silva, 2016), which is known as food-anticipatory activity (FAA). It is driven by a food-entrainable oscillator (FEO) (Mistlberger, 2009).…”

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confidence: 99%

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Laboratory and field investigations on the effect of scheduled meal timings on growth performance and nutrient retention in an Indian major carp,Cirrhinus mrigala(Ham) fingerlings: Effect on nitrogen retention and excretion of metabolites

Garg

Kalla

2017

Aquac Res

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To investigate the effect of scheduled meal timings on growth performance in Cirrhinus mrigala fingerlings, two experiments were conducted. The first experiment was conducted under laboratory conditions and the fish were submitted to schedule meal timings (at 08:00, 12:00,16:00, 20:00, 00:00 and 04:00). A control on continuous feeding was also maintained. ANOVA had revealed a significant (p < .05) increase in live weight gain (g), growth per cent gain in body weight, specific growth rate, PER, GPR, GER and APD (%) values in fingerlings fed between 12:00 and 16:00 hours. A decline in growth parameters, nutrient retention and an increase in FCR values were observed in the group fed at 20:00, 00:00 hours and also in the control group. Studies have further revealed that meal timings had also significantly (p < .005) affected protein digestibility, nitrogen retention and excretion of metabolites. Fish carcass composition had significantly (p < .05) higher accumulation of protein (14.82 ± 0.032), fat (5.51 ± 0.006) and energy (5.95 ± 0.004) in the group fed at 16:00 hours. The second experiment was conducted under field conditions and the fish were submitted to schedule meal timings (at 08:00, 12:00, 16:00 and 20:00). A control on continuous feeding was also maintained. Significantly (p < .05) higher values in growth parameters were observed in the group fed at 16:00 hours and lower values in the group fed at 20:00 hours and also in controls. Water quality, nutrients and productivity status of ponds revealed favourable levels and appears to have been affected by meal timings. Thus, in C. mrigala, timings of food intake can serve to optimize the utilization of ingested calories.

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Innovation Trends in the Agribusiness Supply Chain

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Zoppo²,

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2023

Agriculture as an Alternative Investment

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Self-feeder systems and infrared sensors to evaluate the daily feeding and locomotor rhythms of Pirarucu (Arapaima gigas) cultivated in outdoor tanks

Cited by 24 publications

References 38 publications

A new approach to feed frequency studies and protein intake regulation in juvenile pirarucu

A new approach to feed frequency studies and protein intake regulation in juvenile pirarucu

Laboratory and field investigations on the effect of scheduled meal timings on growth performance and nutrient retention in an Indian major carp,Cirrhinus mrigala(Ham) fingerlings: Effect on nitrogen retention and excretion of metabolites

Innovation Trends in the Agribusiness Supply Chain

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