A Descriptive Study of Keel Bone Fractures in Hens and Roosters from Four Non-Commercial Laying Breeds Housed in Furnished Cages [PDF]
Animals, 2020 The presence of keel bone fractures (KBF) in laying hens has been documented and discussed by several authors, nevertheless the causative factors behind KBF remain uncertain.
Käthe Elise Kittelsen +5 more
doaj +8 more sources
Genetic analysis of keel bone fractures in laying hens housed in a quasi-commercial aviary. [PDF]
Poult SciKeel bone fractures (KBF) in laying hens are a major welfare problem in the egg production industry. While housing design and nutrition are known contributing factors, the role of genetics in KBF susceptibility is not well understood. The objective of this study was to estimate the heritability of KBF susceptibility and identify associated genomic ...
Duenk P +7 more
europepmc +4 more sources
The Role of Egg Production in the Etiology of Keel Bone Damage in Laying Hens [PDF]
Frontiers in Veterinary Science, 2020 Keel bone fractures and deviations belong to the most severe animal welfare problems in laying hens and are influenced by several factors such as husbandry system and genetic background.
Beryl Katharina Eusemann +5 more
doaj +6 more sources
Frontiers in Veterinary Science, 2020 The keel bone of commercially kept laying hens is known to be frequently affected by morphologic changes such as fractures and deformations with important implications for animal welfare.
Sarah Baur +3 more
doaj +2 more sources
Prevalence of Keel Bone Damage in Red Jungle Fowls (Gallus gallus)—A Pilot Study
Animals, 2020 Keel bone damage (KBD) is a highly prevalent problem in commercial egg production. KBD consists of two different conditions affecting the keel: Keel bone deviation and keel bone fractures (KBF).
Käthe Elise Kittelsen +5 more
doaj +2 more sources
Development of an ex vivo protocol to model bone fracture in laying hens resulting from collisions. [PDF]
PLoS ONE, 2013 Fractures of the keel bone, a bone extending ventrally from the sternum, are a serious health and welfare problem in free range laying hens. Recent findings suggest that a major cause of keel damage within extensive systems is collisions with internal ...
Michael J Toscano +4 more
doaj +2 more sources
Radiographic examination of keel bone damage in living laying hens of different strains kept in two housing systems. [PDF]
PLoS ONE, 2018 A high prevalence of deviations and fractures of the keel bone is a widespread welfare problem in laying hens. The aim of this study was to experimentally investigate this multifactorial problem throughout the laying period and to compare the prevalence ...
Beryl Katharina Eusemann +5 more
doaj +2 more sources
Perch Positioning Affects both Laying Hen Locomotion and Forces Experienced at the Keel
Animals, 2020 The aim of this study was to assess the effect of perch positioning on laying hens’ locomotion and the resulting energy experienced at the keel. Twenty Nick Chick and 20 Brown Nick hens were trained to transition from a platform to a perch in several ...
Christina Rufener +3 more
doaj +2 more sources
Pecking block use at individual level is associated with improved eggshell quality and keel fractures in laying hens [PDF]
Poultry ScienceLaying hens possess a calcium-specific appetite that intensifies towards lights out to meet the high demands for eggshell formation and skeletal maintenance. Pecking blocks (PBs) are edible enrichments that can serve as an additional calcium source.
Tunmise F. Ehigbor +5 more
doaj +2 more sources
Hen-durance training-effects of an exercise regimen on laying hen muscle architecture and fracture prevalence. [PDF]
R Soc Open SciDomestic chickens kept for egg laying navigate inclines such as ramps in some commercial housing systems to aid in transitions between housing tiers. Laying hens use their wings and hindlimbs in a locomotion called wing-assisted incline running (WAIR) to
Hong GAT +6 more
europepmc +2 more sources