Presence of keel bone damage in laying hens, pullets and roosters of local chicken breeds. [PDF]
PLoS ONEIn commercial laying hens, keel bone damage (KBD) is a severe health and welfare problem leading to pain, reduced mobility and decreased laying performance. Flocks of all production systems and hybrid lines can be affected.
Lisa Jung +4 more
doaj +7 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 +7 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 +6 more sources
Utilizing 3-dimensional models to assess keel bone damage in laying hens throughout the lay cycle [PDF]
Poultry Science: The global egg industry is rapidly transitioning to cage-free egg production from conventional cages. Hens housed in cage-free systems have an increased prevalence of keel damage that could lead to reduced egg production and compromised well-being. The
Brittney J. Emmert +4 more
doaj +5 more sources
The Reliability and Accuracy of Palpation, Radiography, and Sonography for the Detection of Keel Bone Damage [PDF]
Animals, 2019 Palpation is the most popular method of measuring keel bone damage on live birds, although it has been criticized for being subjective and inaccurate. The goals of this study were to examine intra- and inter-rater reliability when trained with feedback ...
Linnea M. Tracy +5 more
doaj +9 more sources
Limited Associations between Keel Bone Damage and Bone Properties Measured with Computer Tomography, Three-Point Bending Test, and Analysis of Minerals in Swiss Laying Hens [PDF]
Frontiers in Veterinary Science, 2017 Keel bone damage is a wide-spread welfare problem in laying hens. It is unclear so far whether bone quality relates to keel bone damage. The goal of the present study was to detect possible associations between keel bone damage and bone properties of ...
Sabine G. Gebhardt-Henrich +6 more
doaj +4 more sources
Effects of housing systems on keel bone damage and egg quality of laying hens. [PDF]
Vet Res Forum, 2020 The aim of this study was to investigate whether keel bone damage is prevalent in laying hens in Greece. The study was conducted in three industrial farms using different housing systems: (a) enriched cages, (b) floor system, and (c) free-range system. One hundred hens per housing system, randomly selected, were evaluated for keel bone damages with the
Dedousi A +2 more
europepmc +5 more sources
Welfare parameters and keel bone damage in laying hens reared in different production systems [PDF]
Biotechnology in Animal Husbandry, 2021 The aim of this study was to determine the effect of housing system and the age of hens on welfare parameters and the prevalence of keel bone damage in laying hens. In this study two housing systems were evaluated: aviary system and enriched cages.
Spiridonović Sava +4 more
doaj +4 more sources
Association of keel bone morphometry with keel bone damage and skeletal quality in the laying hen. [PDF]
Br Poult Sci1. The aim of this work was to identify a heritable keel bone phenotype with a correlation to keel bone damage and/or skeletal bone strength that could be easily measured in the living hen to aid selection to prevent welfare issues. 2. The scoring system used reflected the observed damage, keel bone dimensions and shape compared to traditional ...
Maidin MBM +6 more
europepmc +5 more sources
KEEL BONE DAMAGE IN LAYING HENS – DIAGNOSTIC METHODS AND SEVERITY EVALUATION [PDF]
Trakia Journal of Sciences, 2020 Modern industrial egg production is accompanied by a number of clinical problems related to the welfare of laying hens. Sternum injuries are some of the most common pathologies in this animal species. The sternum in hens is 9-12 cm long and is located in
S. Slavchev, L. Lazarov
doaj +3 more sources