Possible risk factors for keel bone damage in organic laying hens
Possible risk factors for keel bone damage in organic laying hens
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DOI：
10.1017/s175173111900003x
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发表时间：
2019-10-01
期刊：
影响因子：
3.6
通讯作者：
Knierim, U.
中科院分区：
文献类型：
--
作者：
Jung, L.;Niebuhr, K.;Knierim, U.
蛋鸡龙骨骨损伤（KBD）是传统和有机鸡蛋生产系统中的一个重要福利问题。我们的目的是通过分析在8个欧洲国家评估的107个鸡群的横截面数据，确定有机母鸡大骨节病的可能风险因素。由于部分数据缺失，最终的多元回归模型基于50个鸡群的数据。龙骨骨损伤包括骨折和/或偏离，并通过触诊和目视检查每群至少50只随机收集的52 - 73周龄母鸡，与其他基于动物的测量一起记录。通过访谈、检查和饲料分析获得管理和饲养数据。龙骨骨损伤群患病率范围为3%至88%。在文献资料和实践经验的基础上，对26个与大骨节病有潜在关联的因素进行单因素筛选，采用斯皮尔曼相关分析或Mann-Whitney U检验（P
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%. Compiled on the basis of literature and practical experience, 26 potential associative factors of KBD went into an univariable selection by Spearman correlation analysis or Mann-Whitney U test (with P