Keel bone fractures are associated with individual2 mobility of laying hens in an aviary system
Applied Animal Behaviour Science(2019)
摘要
•The relationship between keel bone fractures and hen mobility within commercial systems is unknown.•Movements of hens in an aviary were recorded using an infrared tracking system.•The greater the fracture severity, the more time hens spent on the top tier.•Fractures were not linked to the total number of transitions.
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关键词
Keel bone fracture,Individual behaviour,Laying hen welfare,Spatial distribution
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