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| Jung, L.; Niebuhr, K.; Hinrichsen, L. K.; Gunnarsson, S.; Brenninkmeyer, C.; Bestman, M.; Heerkens, J.; Ferrari, P.; Knierim, U.. |
| Keel bone damage (KBD) in laying hens is an important welfare problem in both conventional and organic egg production systems. We aimed to identify possible risk factors for KBD in organic hens by analysing cross-sectional data of 107 flocks assessed in eight European countries. Due to partly missing data, the final multiple regression model was based on data from 50 flocks. Keel bone damage included fractures and/or deviations, and was recorded, alongside with other animal based measures, by palpation and visual inspection of at least 50 randomly collected hens per flock between 52 and 73 weeks of age. Management and housing data were obtained by interviews, inspection and by feed analysis. Keel bone damage flock prevalences ranged from 3% to 88%.... |
| Tipo: Journal paper |
Palavras-chave: Health and welfare. |
| Ano: 2019 |
URL: http://orgprints.org/35072/1/possible_risk_factors_for_keel_bone_damage_in_organic_laying_hens.pdf |
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| Bestman, Monique; Verwer, C; Brenninkmeyer, Christine; Knierim, Ute; Soerensen, J.T.; Hinrichsen, L.; Willett, A. V.; Niebuhr, K.; Smajlhodzic, F.; Errari, P.; Ferrante, V.; Gunnarsson, S.; Tuyttens, Frank; Heerkens, Jasper. |
| In the HealthyHens project we investigated laying hen health and welfare in organic poultry systems in eight European countries. This leaflet presents our findings and recommendations. Most of our recommendations are also relevant for conventional poultry systems. |
| Tipo: Other |
Palavras-chave: Poultry. |
| Ano: 2015 |
URL: http://orgprints.org/30398/1/3145.pdf |
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| Knierim, U.; Staack, M.; Gruber, B.; Keppler, C.; Zaludik, K.; Niebuhr, K.. |
| Feather pecking still presents a major problem in organic laying hen farming. In order to identify important risk factors during the laying period as well as during the rearing period in an exploratory epidemiological approach, we followed birds from 23 organic rearing units in Austria and Germany to 46 laying units. Management and housing conditions were recorded during one day visits in the 16th to 18th and 30th to 40th week of age, respectively. As an indicator of feather pecking, feather conditions of random samples of 30 hens per laying farm were assessed. Average feather scores from 0 (best) to 3 (worst) were calculated. The average score of 0.73 (± 0.44) was not significantly different from the score of 0.77 (± 0.33) from 54 conventional farms... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Health and welfare. |
| Ano: 2008 |
URL: http://orgprints.org/11775/1/Knierim_11775_ed.doc |
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