Related Experiment Video
Updated: May 25, 2026
06:40
Operant Conditioning Task to Measure Song Preference in Zebra Finches
Published on: December 26, 2019
Access to barrier perches improves behavior repertoire in broilers.
Beth A Ventura1, Frank Siewerdt, Inma Estevez
1Department of Animal and Avian Sciences, University of Maryland, College Park, Maryland, United States of America.
Plos One
|February 3, 2012
Summary
Barrier perches improve broiler welfare by encouraging perching and activity while reducing aggression and disturbances. These environmental enrichments also promote more even space utilization across various stocking densities.
Area of Science:
- Animal Science
- Animal Welfare
- Poultry Science
Background:
- High stocking densities in broiler production restrict behavioral opportunities and lead to uneven space utilization.
- Environmental complexity is crucial for addressing welfare concerns in confined poultry.
Purpose of the Study:
- To investigate the impact of barrier perches on broiler behavior and space use at different stocking densities.
- To determine if environmental enrichment can mitigate negative effects of high-density housing.
Main Methods:
- 2,088 broiler chicks were housed in simple barrier, complex barrier, or control pens at low, moderate, or high densities (8, 13, or 18 birds/m²).
- Behavioral data and space utilization were collected via scan sampling from 2 to 6 weeks of age.
- Data were analyzed using analysis of variance with week as a repeated measure.
Main Results:
- Both simple and complex barrier perches significantly increased perching rates and reduced aggression and disturbances compared to controls.
- Higher stocking densities (18 birds/m²) suppressed activity, reduced foraging and perching, and increased sitting and disturbances.
- Barrier perches improved central pen area usage, while increased density reduced it.
Conclusions:
- Barrier perches are effective in enhancing broiler welfare by promoting activity, reducing negative behaviors, and improving space distribution.
- Environmental enrichment with barrier perches offers a viable strategy to improve welfare in high-density broiler production systems.
Related Concept Videos
00:48Optimal Foraging
How animals obtain and eat their food is called foraging behavior. Foraging can include searching for plants and hunting for prey and depends on the species and environment.
01:20Mate Choice
Mate choice—the decision about whom to mate with—is a type of natural selection, since animals must reproduce to pass down their genes. Mate choice is also called intersexual selection because the behavior occurs between the sexes.
02:07Conservation of Declining Populations
Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.