Providing laying hens with perches: fulfilling behavioural needs but causing injury?

@article{Sandilands2009ProvidingLH,
  title={Providing laying hens with perches: fulfilling behavioural needs but causing injury?},
  author={Victoria Sandilands and Christine Moinard and Nick H.C. Sparks},
  journal={British poultry science},
  year={2009},
  volume={50 4},
  pages={395-406}
}
1. The EU laying hen directive, which bans standard battery cages from 2012, has implications for animal welfare, particularly since housing laying hens in extensive systems, while increasing natural behaviour and improving bone strength, is associated with a greater level of bone fractures, predominantly of the keel bone, compared to birds housed in cages. 2. The aetiology and welfare consequences of keel and other bone fractures are not well understood and could have important implications… CONTINUE READING
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