This research was funded by the Federal Ministry of Food and Agriculture (BMEL) due to a decision of the German Federal Parliament (www.ble.de/ptble/innovationsfoerderung-bmel/); grant number 2817903615. “The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.” This dataset is base for the article "Can the assessment of skin lesions and keel bone damage at the slaughterhouse tell about hen welfare on-farm?". Can the assessment of skin lesions and keel bone damage at the slaughterhouse tell about hen welfare on-farm? Lisa Jung1*, Boris Kulig², Helen Louton3, Ute Knierim1 1University of Kassel, Farm Animal Behaviour and Husbandry Section, Germany ²University of Kassel, Agricultural and Biosystems Engineering, Germany 3University of Rostock, Faculty of Agricultural and Environmental Sciences, Animal Health and Animal Welfare, Germany By reuse, please cite the above referred article, as this contains important background information of the dataset. File: Flocknumber: Flock ID (N=20) Time point: Assessment time point ("Farm", "Arrival", "Slaughter line") Indicator: Skin lesions back, Skin lesions cloaca/belly, Keel bone damage Prevalence: % affected hens/flock (metric) SampleSize: number of assessed hens/flock (metric) FlockSize: number of hens/flock (metric) n.a. = information not availible For more informaion about animals, material and methods please read the related article