Keel bone fractures in Danish laying hens: Prevalence and risk factors. [PDF]
PLoS ONE, 2021 Keel bone fractures (KBF) in commercial poultry production systems are a major welfare problem with possible economic consequences for the poultry industry. Recent investigations suggest that the overall situation may be worsening.
Ida C N Thøfner +2 more
doaj +7 more sources
Fracture morphology and ossification process of the keel bone in modern laying hens based on radiographic imaging. [PDF]
PLoS OneKeel bone fractures (KBF) are one of the most important welfare problems in commercial laying hens. Despite extensive research on the matter, its etiology remains unclear.
Gretarsson P +5 more
europepmc +7 more sources
Rearing laying hens: Early environmental complexity and genetic strain have life-long effects on keel bone size and fractures [PDF]
Poultry ScienceKeel bone damage (KBD) is a major welfare concern for laying hens. Environmental complexity during rearing is suggested to promote skeletal development and reduce KB fractures (KBF). We investigated the effect of rearing environment and genetic strain on
Ana K. Rentsch +3 more
doaj +5 more sources
Keel bone fractures induce a depressive-like state in laying hens [PDF]
Scientific Reports, 2020 In commercial flocks of laying hens, keel bone fractures (KBFs) are prevalent and associated with behavioural indicators of pain. However, whether their impact is severe enough to induce a depressive-like state of chronic stress is unknown.
Elena A. Armstrong +7 more
semanticscholar +6 more sources
Fear, anxiety, and production in laying hens with healed keel bone fractures
Poultry Science, 2023 : For laying hens, the immediate aftermath and healing period of a keel fracture (KF) is characterized by reduced ability to perform species-specific behavior, access resources, and pain.
J.L. Edgar +5 more
doaj +5 more sources
Poultry Science, 2023 : Keel bone fractures affect welfare, health, and production performance in laying hens. A total of one hundred and twenty 35-wk-old Hy-line Brown laying hens with normal keel (NK) bone were housed in furnished cages and studied for ten weeks to ...
Haidong Wei +6 more
doaj +4 more sources
Susceptibility to keel bone fractures in laying hens and the role of genetic variation
Poultry Science, 2017 &NA; Keel bone fractures are a well‐known welfare problem in modern commercial laying hen systems. The present study sought to identify genetic variation in relation to keel bone fracture susceptibility of 4 distinct crossbred and one pure line, and by ...
Laura Candelotto +5 more
semanticscholar +4 more sources
Euthanasia Through Cervical Dislocation or CO2 Might Affect Keel Bone Fracture Prevalence in 30-Week-Old Laying Hens [PDF]
Frontiers in Animal Science, 2021 Laying hens are susceptible to keel bone fractures due to continuous endogenous calcium resorption for eggshell formation. Although it is assumed that external trauma to the keel bone, e.g., due to collisions, is the main cause for fractures, accumulated
Christina Rufener +2 more
semanticscholar +3 more sources
Genetics of digital phenotypes of keel bone in layer chickens and correlations with keel bone fractures and deviations. [PDF]
Genet Sel EvolAbstract Background Poultry is a global industry with laying hens that are genetically optimized for high egg yield. Keel bone fractures can affect up to 80% of laying hens, posing welfare and production problems. Therefore, genetic selection to reduce keel fractures is important.
Sallam M +7 more
europepmc +9 more sources
Poultry Science, 2018 The aim of this study was to investigate the effect of keel bone fracture (KBF) severity and healing activity on individual productivity of laying hens. Focal hens (75 Lohmann Selected Leghorn (LSL), 75 Lohmann Brown (LB)) were housed alongside non‐focal
Christina Rufener +3 more
semanticscholar +4 more sources