Prevalence of keel bone deformities in Swiss laying hens.

@article{Kppeli2011PrevalenceOK,
  title={Prevalence of keel bone deformities in Swiss laying hens.},
  author={Susanna K{\"a}ppeli and Sabine G. Gebhardt-Henrich and Eckhart Froehlich and Andreas Pfulg and Michael H Stoffel},
  journal={British poultry science},
  year={2011},
  volume={52 5},
  pages={531-6}
}
The goal of this study was to evaluate the prevalence of keel bone deformities of laying hens in Switzerland. The keel bones of 100 end-of-lay hens from each of 39 flocks (3900 in total) were palpated. On average, 25·4% of the hens had moderately or severely deformed keel bones and the overall prevalence including slight deformities was 55%. 3. Variation between flocks was considerable. Thus, the prevalence of moderately or severely deformed keel bones ranged from 6 to 48%, and the overall… CONTINUE READING
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