Latest News

9.9.2018

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 »

13.6.2018

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 »

18.5.2018

2ND KEEL BONE DAMAGE TRAINING SCHOOL – JUNE 14TH, 2018

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 »

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:

http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0194974

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. https://doi.org/10.1371/journal.pone.0194974

Beryl Eusemann (left) and Stefanie Petow (right)