Rearing experience with ramps improves specific learning and behaviour and welfare on a commercial laying farm

Nicol, Christine; Norman, Kate I; Weeks, Claire A; Tarlton, John F; Nicol, Christine J

Abstract

To access resources in commercial laying houses hens must move between levels with agility to avoid injury. This study considered whether providing ramps during rear improved the ability of birds to transition between levels. Twelve commercial flocks (2,000 birds/flock) on a multi-age site were examined between 1 and 40 weeks of age. All birds had access to elevated perching structures from 4 days of age. Six treatment flocks were also provided with ramps during rear to facilitate access these structures. Flocks were visited 3 times during rear and 3 times at lay to record transitioning behaviour and use of the elevated structures, together with scores for keel bone and feather damage. Ramp-reared flocks used the elevated structures to a greater extent at rear (P=0.001) and at lay, when all flocks had ramps, showed less hesitancy (i.e. pacing (P=0.002), crouching (P=0.001) and wing-flapping (P=0.001) in accessing levels. Mean levels of keel bone damage were reduced in ramp reared flocks (52%) compared with control flocks (64.8%) at 40 weeks of age (P=0.028). The early life experience of the ramp-reared flocks enabled specific learning that translated and persisted in later life and resulted in overall welfare benefits.

Citation

Nicol, C., Norman, K. I., Weeks, C. A., Tarlton, J. F., & Nicol, C. J. (2021). Rearing experience with ramps improves specific learning and behaviour and welfare on a commercial laying farm. Scientific Reports,

• Journal Article Type: Article
• Acceptance Date: Mar 22, 2021
• Publication Date: Apr 23, 2021
• Deposit Date: Jun 18, 2021
• Publicly Available Date: Jun 18, 2021
• Print ISSN: 2045-2322
• Publisher: Nature Research
• Peer Reviewed: Peer Reviewed
• Public URL: https://rvc-repository.worktribe.com/output/1547825