This research received no external funding


Presence of keel bone damage in laying hens, pullets and roosters of local chicken breeds
Lisa Jung1*, Sonja Hillemacher², Inga Tiemann², Mascha Lepke1 and Dirk Hinrichs1
1Animal Breeding Section, University of Kassel, Nordbahnhofstr. 1a, 37213 Witzenhausen, Germany;
²Institute of Agricultural Engineering, University of Bonn, Nussallee 5, 53115 Bonn, Germany


By reuse, please cite the above referred article, as this contains important background information of the dataset.

RawData:

File:
Farm		Farm ID (N=8)						
Flock size	Number of animals/flock						
Housing system	Mobile house, floor house (no aviary)						
Free range	Free range acces yes/no 						
Perch height	Perch height from bottom in cm (metric)						
Perch material	Material of the perches (only wood in all barns)						
Breed		Genetic of the chickens based on owner information (Augsburger, Australorps, Barabconne, Bielefelder, Dresdner, Eastfriesian gull, 			Lakenfelder, Lohmann Brown, Malines, Maran, Sperber, Sulmtaler, Sundheimer bantam, Vorwerk)						
Sex		m= male, f= female						
Age		Differencated between adults and pullets, in case of female pullet means that the hen is not yet laying eggs						
Weight in g	Body weight in g (metric)						
Deformations	Three-point-score, 0-2 (0= Straight, no deformation, 1= Deviation of straight axis ≤ 1 cm, 2= Deviation of straight axis >1 cm
Fractures	Two-point-score, 0-1 (0= No callus/pieces of fractured bone or dislocations palpable, 1= Callus/pieces of bone palpable)		
Tip damage	Two-point-score, 0-1 (last 2 cm caudal, 0= No callus/pieces of fractured bone palpable, no compression or angle, 1= Callus/pieces of 		fractured bone palpable, compressed or angled)		
KBD total	Two-point (0= no deformation+no fracture+no tip damage, 1= deformation and/or fracture and/or tip damage)						
Assessor	ID of Assessor (N=2)						


R Script KBD GLMM binominal.txt:
includes codes for the models and shows correlation results

Table S1: 
shows statistics of the Generalized linear mixed effect model assuming binomial distribution. Farm was included as random effect in the model, breed and perch height as fixed effects. Given are estimates, standard error (SE), z-value and level of significance (p-value)



For more informaion about animals, material and methods please read the related article