Pathological characterization of keel bone fractures in laying hens does not support external trauma as the underlying cause.

ABSTRACT: Keel bone fractures in laying hens have been described with increasing prevalence from several countries over the last twenty years and are considered one of the greatest welfare problems to the layer industry. In Denmark we have observed fracture prevalence in the range of 53% to 100% in flocks from cage-free systems whereas flock prevalences in birds from enriched cages ranged between 50-98%. Previous research have speculated that the underlying reason for the development of keel bone fractures is trauma in relation to impact of the bird with furniture, other equipment etc. However, little evidence of this theory has been provided. Predisposing factors have also been suggested including genetics of the bird, lack of specific feedstuff components, high egg production, management factors a

SUBMITTER: Thofner I 

PROVIDER: S-EPMC7062247 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature