Keel bone fractures are more prevalent in White Leghorn hens than in Red Jungle fowl hens-A pilot study. [PDF]
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
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Keel Bone Damage in Laying Hens—Its Relation to Bone Mineral Density, Body Growth Rate and Laying Performance [PDF]
Animals, 2021 Keel bone damage is an important animal welfare problem in laying hens. Two generations of four layer lines, differing in phylogenetic background and performance level and kept in single cages or floor pens were weighed and scored for keel bone ...
Christin Habig +5 more
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Wing-feather loss in white-feathered laying hens decreases pectoralis thickness but does not increase risk of keel bone fracture [PDF]
Royal Society Open Science, 2022 Feather loss in domestic chickens can occur due to wear and tear, disease or bird-to-bird pecking. Flight feather loss may decrease wing use, cause pectoral muscle loss and adversely impact the keel bone to which these muscles anchor.
Renée Garant +6 more
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Keel bone fractures affect laying hens' mobility, but no evidence for reciprocal effects. [PDF]
PLoS ONEKeel bone fractures (KBF) are prevalent in commercial laying hens and are considered one of the greatest welfare concerns in the egg-production industry. While clear associations exist between KBF and animal mobility, suggesting that KBF impair mobility,
Camille M Montalcini +3 more
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A tagged visual analog scale is a reliable method to assess keel bone deviations in laying hens from radiographs [PDF]
Frontiers in Veterinary Science, 2022 Laying hens often suffer from keel bone damage (KBD) that includes pathologies with different etiologies, like diverse forms of fractures and deviations.
Lisa Jung +3 more
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Understanding the Causes of Keel Bone Damage and Its Effects on the Welfare of Laying Hens [PDF]
AnimalsKeel bone damage (KBD) is a prominent concern within the realm of the egg-laying industry, exerting substantial impacts on the welfare and productivity of laying hens.
Xin Li +6 more
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Radiographic Evaluation of Keel Bone Damage in Laying Hens—Morphologic and Temporal Observations in a Longitudinal Study [PDF]
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
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Dietary Soybean Oil Supplementation Affects Keel Bone Characters and Daily Feed Intake but Not Egg Production and Quality in Laying Hens Housed in Furnished Cages [PDF]
Frontiers in Veterinary Science, 2021 To evaluate dietary soybean oil supplementation on production performance, egg quality, and keel bone health in laying hens. Two hundred and four laying hens at 20 weeks of age (WOA) were distributed into 12 cages containing 17 birds each.
Haidong Wei +8 more
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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
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Productive performance, perching behavior, keel bone and other health aspects in dual-purpose compared to conventional laying hens [PDF]
Poultry Science, 2022 : Several alternatives to avoid killing male day-old chicks are available. One of these alternatives is to keep dual-purpose chicken strains. The aim of this study was to compare dual-purpose hens (Lohmann Dual, LD) with conventional laying hens (Lohmann
Julia Malchow +4 more
doaj +3 more sources