Results 11 to 20 of about 165,292 (342)
Reconstructing an historical pollination syndrome: keel flowers
BMC Ecology and Evolution, 2022 Background Keel flowers are bilaterally symmetrical, pentamerous flowers with three different petal types and reproductive organs enclosed by keel petals; generally there is also connation of floral parts such as stamens and keel petals.
Deniz Aygören Uluer +3 more
doaj +2 more sources
Abnormal Bone Metabolism May Be a Primary Causative Factor of Keel Bone Fractures in Laying Hens
Animals, 2021 Keel bone damage negatively affects the welfare, production performance, egg quality, and mobility of laying hens. This study aimed to investigate whether abnormal bone metabolism causes keel bone damage in laying hens.
Haidong Wei +9 more
doaj +2 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
PLoS ONE, 2021 Fractures and deviations to the keel bone are common in commercial laying hens, with reported variations in occurrence across strains and breeds. The aetiology is not fully understood, however, modern genetics and selection for efficient egg production ...
Käthe Elise Kittelsen +6 more
doaj +2 more sources
The Role of Egg Production in the Etiology of Keel Bone Damage in Laying Hens
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 +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
The Influence of Keel Bone Damage on Welfare of Laying Hens
Frontiers in Veterinary Science, 2018 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.
Anja B. Riber +2 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
Animals, 2019 Keel fracture has negative effects on the health and welfare of laying hens. We investigated effects of keel fracture on stress, inflammation, and the orexin system in laying hens.
Haidong Wei +8 more
doaj +2 more sources
Journal of Animal Science, 2022 Keel bone damage (KBD) is more prevalent in alternative laying hen housing systems than in conventional cages, and its incidence differs from strain to strain. However, the information of KBD in Lindian chickens, a native Chinese strain, is limited.
Haidong Wei +7 more
semanticscholar +1 more source