Enrichment for Laboratory Zebrafish—A Review of the Evidence and the Challenges

Good practice for the housing and care of laboratory zebrafish <i>Danio rerio</i> is an increasingly discussed topic, with focus on appropriate water quality parameters, stocking densities, feeding regimes, anaesthesia and analgesia practices, methods of humane killing, and more. One are...

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Main Authors: Chloe H. Stevens, Barney T. Reed, Penny Hawkins
Format: Article
Language:English
Published: MDPI AG 2021-03-01
Series:Animals
Subjects:
Online Access:https://www.mdpi.com/2076-2615/11/3/698
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author Chloe H. Stevens
Barney T. Reed
Penny Hawkins
author_facet Chloe H. Stevens
Barney T. Reed
Penny Hawkins
author_sort Chloe H. Stevens
collection DOAJ
description Good practice for the housing and care of laboratory zebrafish <i>Danio rerio</i> is an increasingly discussed topic, with focus on appropriate water quality parameters, stocking densities, feeding regimes, anaesthesia and analgesia practices, methods of humane killing, and more. One area of current attention is around the provision of environmental enrichment. Enrichment is accepted as an essential requirement for meeting the behavioural needs and improving the welfare of many laboratory animal species, but in general, provision for zebrafish is minimal. Some of those involved in the care and use of zebrafish suggest there is a ‘lack of evidence’ that enrichment has welfare benefits for this species, or cite a belief that zebrafish do not ‘need’ enrichment. Concerns are also sometimes raised around the practical challenges of providing enrichments, or that they may impact on the science being undertaken. However, there is a growing body of evidence suggesting that various forms of enrichment are preferred by zebrafish over a barren tank, and that enriched conditions can improve welfare by reducing stress and anxiety. This review explores the effects that enrichment can have on zebrafish behaviour, physiology and welfare, and considers the challenges to facilities of providing more enrichment for the zebrafish they house.
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spelling doaj.art-0770e69e737342c08e65e565cccf446d2023-12-03T12:38:18ZengMDPI AGAnimals2076-26152021-03-0111369810.3390/ani11030698Enrichment for Laboratory Zebrafish—A Review of the Evidence and the ChallengesChloe H. Stevens0Barney T. Reed1Penny Hawkins2Animals in Science Department, RSPCA, Wilberforce Way, Southwater, West Sussex RH13 9RS, UKAnimals in Science Department, RSPCA, Wilberforce Way, Southwater, West Sussex RH13 9RS, UKAnimals in Science Department, RSPCA, Wilberforce Way, Southwater, West Sussex RH13 9RS, UKGood practice for the housing and care of laboratory zebrafish <i>Danio rerio</i> is an increasingly discussed topic, with focus on appropriate water quality parameters, stocking densities, feeding regimes, anaesthesia and analgesia practices, methods of humane killing, and more. One area of current attention is around the provision of environmental enrichment. Enrichment is accepted as an essential requirement for meeting the behavioural needs and improving the welfare of many laboratory animal species, but in general, provision for zebrafish is minimal. Some of those involved in the care and use of zebrafish suggest there is a ‘lack of evidence’ that enrichment has welfare benefits for this species, or cite a belief that zebrafish do not ‘need’ enrichment. Concerns are also sometimes raised around the practical challenges of providing enrichments, or that they may impact on the science being undertaken. However, there is a growing body of evidence suggesting that various forms of enrichment are preferred by zebrafish over a barren tank, and that enriched conditions can improve welfare by reducing stress and anxiety. This review explores the effects that enrichment can have on zebrafish behaviour, physiology and welfare, and considers the challenges to facilities of providing more enrichment for the zebrafish they house.https://www.mdpi.com/2076-2615/11/3/698zebrafishenvironmental enrichmentwelfarelaboratory animalsrefinementthree Rs
spellingShingle Chloe H. Stevens
Barney T. Reed
Penny Hawkins
Enrichment for Laboratory Zebrafish—A Review of the Evidence and the Challenges
Animals
zebrafish
environmental enrichment
welfare
laboratory animals
refinement
three Rs
title Enrichment for Laboratory Zebrafish—A Review of the Evidence and the Challenges
title_full Enrichment for Laboratory Zebrafish—A Review of the Evidence and the Challenges
title_fullStr Enrichment for Laboratory Zebrafish—A Review of the Evidence and the Challenges
title_full_unstemmed Enrichment for Laboratory Zebrafish—A Review of the Evidence and the Challenges
title_short Enrichment for Laboratory Zebrafish—A Review of the Evidence and the Challenges
title_sort enrichment for laboratory zebrafish a review of the evidence and the challenges
topic zebrafish
environmental enrichment
welfare
laboratory animals
refinement
three Rs
url https://www.mdpi.com/2076-2615/11/3/698
work_keys_str_mv AT chloehstevens enrichmentforlaboratoryzebrafishareviewoftheevidenceandthechallenges
AT barneytreed enrichmentforlaboratoryzebrafishareviewoftheevidenceandthechallenges
AT pennyhawkins enrichmentforlaboratoryzebrafishareviewoftheevidenceandthechallenges