%0 Journal Article %T Keel bone fractures in laying hens: a systematic review of prevalence across age, housing systems, and strains %A Rufener, Christina %A Makagon, Maja M %J Journal of Animal Science %V 98 %N Supplement_1 %P S36-S51 %@ 0021-8812 %D 2020-08-18 %~ DeepDyve