Latest News


Assessing keel bone damage in laying hens by palpation: effects of assessor experience on accuracy, inter-rater agreement and intra-rater consistency

In a recent study published in Poultry Science, researchers from Belgium, the Netherlands, and the UK describe that experience improves… read more »


A standardized method to assess radiographs of keel fractures

A new study investigating the reliability of a scoring system for keel bone fractures has been published in Frontiers of… read more »



The 2nd Keel Bone Damage (kbd) Training School will be held on June 14th at the Experimental Poultry Centre in Geel,… 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… read more »

Keel bone fracture susceptibility and genetic variation – A new study from Switzerland’s ZTHZ

Switzerland’s ZTHZ latest publication on keel bone fracture is now available online from Poultry Science.  Susceptibility to fractures were assessed using an ex vivo impact testing protocol in combination with a study design that minimized environmental variation to focus on genetic differences. Results found dramatic differences between genetic lines confirming the important role of genetic factors to and their influence on keel damage.

The study also employed a developed dye technique which allowed individual eggs to be traced back to the source hen – results indicate that hens with relatively superior bone quality also produced stronger eggs with thicker shells.

Read more at Poultry Science!

Laura Candelotto, Ariane Stratmann, Sabine G. Gebhardt-Henrich, Christina Rufener, Teun van de Braak, Michael J. Toscano; Susceptibility to keel bone fractures in laying hens and the role of genetic variation. Poult Sci 2017 pex146. doi: 10.3382/ps/pex146