Color of Vertically-Suspended Structure Does Not Impact the Growth of Rainbow Trout Reared in Circular Tanks

Meza, Edgar Ismael Alarcón; Jones, Misty D.; Huysman, Nathan; Voorhees, Jill M.; Barnes, Michael E.

doi:10.4236/ojas.2020.104045

Cited by 3 publications

(2 citation statements)

References 34 publications

(25 reference statements)

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“…On the other hand, an experiment on brown trout, chinook salmon and Atlantic salmon reared in circular tanks with vertically‐suspended aluminium rods as enrichment structures did not show any effect on growth for any species, probably due to the short experimental period or underfed fish 57 . Moreover, colours of vertically‐suspended structures seemed to have no relevant effects on growth performance of hatchery‐reared chinook salmon and rainbow trout 67,68 . This highlights the need to provide ethologically relevant EE features to the species of interest, under the risk of null or even negative effects.…”

Section: Environmental Enrichment Strategiesmentioning

confidence: 88%

“…57 Moreover, colours of vertically-suspended structures seemed to have no relevant effects on growth performance of hatchery-reared chinook salmon and rainbow trout. 67,68 This highlights the need to provide ethologically relevant EE features to the species of interest, under the risk of null or even negative effects. Vertically suspended plant-fibre ropes can also be successfully used as an EE strategy for farmed fish, as it has been demonstrated for gilthead seabream.…”

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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Section: Environmental Enrichment Strategiesmentioning

confidence: 88%

Section: Pers Com)mentioning

confidence: 99%

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

Arechavala-López

Cabrera-Álvarez

Maia

et al. 2021

Reviews in Aquaculture

View full text Add to dashboard Cite

show abstract

A comparison of blue and silver vertically-suspended environmental enrichment during Chinook Salmon and Rainbow trout rearing

J¹,

Thomas²,

Huysman³

et al. 2022

Int J Aquac Fish Sci

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This study evaluated the use of either blue or silver vertically-suspended environmental enrichment in two experiments, with one rearing Chinook salmon (Oncorhynchus tshawytscha) for 29 days and the other rearing rainbow trout (Oncorhynchus mykiss) for 98 days. In both experiments, there were no significant differences in total tank weight, gain, percent gain, feed conversion ratio, or percent mortality between tanks with either silver (unpainted aluminum) or blue vertically-suspended environmental enrichment. Individual fish total length, weight, specific growth rate, and condition factor were also not significantly different between the two colors for both fish species. These results indicate that either silver (unpainted aluminum) or blue vertically-suspended environmental enrichment can be used during the hatchery rearing of juvenile Chinook salmon or rainbow trout.

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Exercise and Structure Improve Juvenile Chinook Salmon Rearing Performance

Voorhees¹,

Huysman²,

Krebs³

et al. 2021

OJMS

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Color of Vertically-Suspended Structure Does Not Impact the Growth of Rainbow Trout Reared in Circular Tanks

Cited by 3 publications

References 34 publications

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

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

A comparison of blue and silver vertically-suspended environmental enrichment during Chinook Salmon and Rainbow trout rearing

Exercise and Structure Improve Juvenile Chinook Salmon Rearing Performance

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