Effects of Intermittent Exercise during Initial Rainbow Trout Oncorhynchus mykiss Rearing in Tanks Containing Vertically-Suspended Environmental Enrichment

doi:10.31038/afs.2020225

Cited by 2 publications

(2 citation statements)

References 20 publications

(31 reference statements)

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“…226 Similarly, no clear effects on growth performance were reported on exercised rainbow trout under intermittent or constant water-flow regimens, combined with vertically-suspended structural enrichment, which directly influences the water flow. 58,61,64,66 However, a combination of structural enrichment and water-flow is important for fish habitat preference and, therefore, the potential effects of multiple factors simultaneously deserve further attention. 227 Villaroel et al 228 found no evidence of positive effects of water-induced exercise on growth performance of rainbow trout.…”

Section: Hydrodynamism: Flow Currents and Exercisementioning

confidence: 99%

“…aluminium rods, aluminium angles, strings of coloured balls) in circular rearing tanks and reported benefits in total tank weight gain, feed conversion ratio and individual performance in the structurally complex tanks, with minimal effects on regular tank cleaning. [58][59][60][61][62][63][64] Rosburg et al 65 showed that rearing chinook salmon (Oncorhynchus tshawytscha) in tanks with verticallysuspended arrays of polyvinyl chloride pipes or six golf balls fixed vertically on threaded rods can improve fish length, weight-gain and fin condition. Similarly, Voorhees et al 66 reported that verticallysuspended structures (aluminium angles) in tanks, combined with an exercise routine, may be beneficial during the rearing of juvenile landlocked fall Chinook salmon.…”

Section: Pers Com)mentioning

confidence: 99%

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Environmental enrichment in fish aquaculture: A review of fundamental and practical aspects

Arechavala-López

Cabrera-Álvarez

Maia

et al. 2021

Reviews in Aquaculture

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Environmental enrichment (EE) can improve the welfare of captive fish. Its objective is to provide new sensorial and motor stimulation in order to help meet their behavioural, physiological, morphological and psychological needs, whilst reducing stress and frequency of abnormal behaviours. In fish farms, rearing environments are usually designed from a human perspective and based on economic requirements, mainly for practical reasons for the farmer, with little consideration for animal welfare. Throughout aquaculture production cycles, many farming operations can be stressful for fish, and EE may not only help them cope with these stressful events but also improve their overall welfare. In recent years, increasing interest on the effects of EE in captive fish has focussed mainly on structural enrichment. However, there are many other enrichment strategies that merit attention (e.g. sensorial, occupational, social and dietary enrichment) and which may be of interest for fish farming. Here, we review in depth the existing literature on EE and its effects on the welfare of a wide range of farmed fish species, discussing the feasibility and potential applications of different EE strategies to promote fish welfare at a commercial scale. We also present a practical framework to address the design, validation and implementation of EE by the aquaculture industry, taking in consideration the technical challenges of providing enrichment for farmed fish.

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