Latest News


New PhD position at the University of Bern

We are currently looking to recruit for a 3 year PhD position focusing on comparison and development of behavioural observation… read more »


A new Masters student at the University of Bern.

As part of an STSM with KeelBoneDamage Net, Ms. Vivian Witjes of Ultrecht University will be doing a 4 month… read more »


Keelbone damage lecture for poultry producers in Slovakia

On Tuesday, November 27th, annual seminar of the Union of the Slovak Poultry Producers took place at the foot of High… read more »


A Training School covering avian bone histology and a WG Meeting on the causes of KBD

Dear Action CA15224 participant, The Action is in the process of organizing two back to back events (A Training School… read more »

Radiographic examination detects differences in KBD between layer lines and housing systems

A new study using radiography to examine the keel bone throughout the laying period has recently been published in PLOS ONE by researchers of the Friedrich-Loeffler-Institut. The aim was to compare the prevalence and severity of keel bone fractures and deviations between layer lines differing in phylogenetic background and laying performance and between single cages and a floor housing system. Hens were radiographed in the 35th, 51st and 72nd week of age. Each image was assessed for fracture yes / no and deviation yes / no. Furthermore, deviations were measured in order to estimate their severity. Fracture prevalence increased with age. The size of deviated keel bone area increased only for hens in cages of some layer lines. Significant differences between the two housing systems show that there seem to be different causes for fractures on one hand and deviations on the other hand. Furthermore, significant differences between the layer lines were found, confirming the role of genetics in and indicating a possible influence of high laying performance on keel bone damage. For more details please have a look at the publication which can be found here:

Eusemann BK, Baulain U, Schrader L, Thöne-Reineke C, Patt A, Petow S (2018) Radiographic examination of keel bone damage in living laying hens of different strains kept in two housing systems. PLoS ONE 13(5): e0194974.

Beryl Eusemann (left) and Stefanie Petow (right)