Evidence map›Paper›PMID 29669621›Full record

ArticleJournal of the American Association for Laboratory Animal Science : JAALAS2018

Effect of Environmental Enrichment on Aggression in BALB/cJ and BALB/cByJ Mice Monitored by Using an Automated System.

Jareca M Giles, Julia W Whitaker, Sheryl S Moy, Craig A Fletcher

Open access · greenAbstract read
In one paragraph

Article in Journal of the American Association for Laboratory Animal Science : JAALAS, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
5.1field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 35 citations in OpenAlex.

  1. Effects of Cage Change and Nest Transfer on Artificial Intelligence-Measured Behaviors in Male C57BL/6 Mice.Journal of the American Association for Laboratory Animal Science : JAALAS · 2026
    Article
  2. Article
  3. Review
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  8. Aggression in Group-Housed Male Mice: A Systematic Review.Animals : an open access journal from MDPI · 2022
    Review
  9. Housing conditions modify seasonal changes in basal metabolism and body mass of the Siberian hamster, Phodopus sungorus.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2022
    Article
  10. Article
  11. Review
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  14. Effects of Acrylic Tunnel Enrichment on Anxiety-Like Behavior, Neurogenesis, and Physiology of C57BL/6J Mice.Journal of the American Association for Laboratory Animal Science : JAALAS · 2021
    Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 1 institution in 1 country.

Jareca M GilesDivision of Comparative Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
Julia W WhitakerDivision of Comparative Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
Sheryl S MoyCarolina Institute for Developmental Disabilities and Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
Craig A FletcherDivision of Comparative Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
University of North Carolina at Chapel Hill · US

Funding

Preclinical CoreU54HD079124 · NICHD · UNIV OF NORTH CAROLINA CHAPEL HILL · PI BELGER, AYSENIL · 2013 to 2019
$8.0M
NICHD NIH HHS U54 HD079124
6 · The paper itself

Abstract

Aggression among mice remains a common undesirable problem in laboratory settings, and animal welfare and scientific outcomes may become compromised depending on the severity of aggression. This study evaluated the effect of cage enrichment comprising a bilevel, mounted 'mezzanine' compared with a cotton square or shelter on intracage male aggression over a 6-wk period. Our first study involved home-cage behavioral challenges to male mice from a high-aggression substrain (BALB/cJ) and low-aggression substrain (BALB/cByJ). Aggressive interactions and locomotor activity were scored manually and then compared with measures of activity obtained by using a continuous automated home-cage monitoring system, the Digital Ventilated Caging (DVC) system. BALB/cJ mice exhibited similar levels of aggression across housing conditions, whereas BALB/cByJ mice had lower aggression when housed with a mezzanine. In the second study, videorecordings and continuous DVC automated measures were collected over 24 h and divided into 12-h light and dark phases. BALB/cByJ mice—but not BALB/cJ—mice had increased aggressive behaviors during the dark phase. However, the DVC detected higher activity levels during the dark phase, compared with the light phase, in both substrains. Elevated activity levels recorded by the DVC correlated with fighting bouts and high levels of locomotion. These results show that a bilevel structural form of enrichment reduces aggression, depending on the BALB/c substrain, and confirms higher aggression levels in the BALB/cJ substrain. In addition, our findings provide evidence that the DVC is effective in identifying mouse cages with patterns of high activity levels, signaling possible aggression incidences, thus potentially allowing for early intervention and consequently improving animal welfare.

Identifiers

PMID29669621
PMCPMC5966230
OpenAlexW2801874624

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.