Keel Bone Damage in Laying Hens
نویسندگان
چکیده
منابع مشابه
Soft Perches in an Aviary System Reduce Incidence of Keel Bone Damage in Laying Hens
Keel bone fractures and deviations are one of the major welfare and health issues in commercial laying hens. In non-cage housing systems like aviaries, falls and collisions with perches and other parts of the housing system are assumed to be one of the main causes for the high incidence of keel bone damage. The objectives of this study were to investigate the effectiveness of a soft perch mater...
متن کاملDo Laying Hens with Keel Bone Fractures Experience Pain?
The European ban on battery cages has forced a change towards the use of non-cage or furnished cage systems, but unexpectedly this has been associated with an increased prevalence of keel bone fractures in laying hens. Bone fractures are acutely painful in mammals, but the effect of fractures on bird welfare is unclear. We recently reported that keel bone fractures have an effect on bird mobili...
متن کاملKeel bone condition in laying hens: a histological evaluation of macroscopically assessed keel bones.
The objective of the present study was to conduct a corresponding histological analysis of 162 macroscopically assessed keel bones (1: severe, 2: moderate, 3: slight, 4: no deformity). Four layer lines were used and hens were kept in furnished cages, small group systems (both allowing more activities due to the provision of perches) and an aviary system, which fully conformed to the EU standard...
متن کاملThe Influence of Keel Bone Damage on Welfare of Laying Hens
This article reviews current knowledge about welfare implications of keel bone damage in laying hens. As an initial part, we shortly describe the different conditions and present major risk factors as well as findings on the prevalence of the conditions. Keel bone damage is found in all types of commercial production, however with varying prevalence across systems, countries, and age of the hen...
متن کاملGenetic selection to increase bone strength affects prevalence of keel bone damage and egg parameters in commercially housed laying hens.
The prevalence of keel bone damage as well as external egg parameters of 2 pure lines divergently selected for high (H) and low (L) bone strength were investigated in 2 aviary systems under commercial conditions. A standard LSL hybrid was used as a reference group. Birds were kept mixed per genetic line (77 hens of the H and L line and 201 or 206 hens of the LSL line, respectively, per pen) in ...
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ژورنال
عنوان ژورنال: Tavukçuluk Araştırma Dergisi
سال: 2020
ISSN: 1302-3209
DOI: 10.34233/jpr.782964