Overall welfare assessment of laying hens: Comparing science-based, environment-based and animal-based assessments
Overall welfare assessment of laying hens: Comparing science-based, environment-based and animal-based assessments
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DOI：
10.1111/j.1740-0929.2010.00834.x
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发表时间：
2011-01-01
影响因子：
2
通讯作者：
Tanaka, Toshio
中科院分区：
文献类型：
--
作者：
Shimmura, Tsuyoshi;Bracke, Marc B. M.;Tanaka, Toshio
为了提高评估的有效性，便于评估系统的扩展和维护，我们建立了一个世界各地蛋鸡福利研究数据库。在此基础上，设计了基于科学的福利评估模型。我们的模型包括测量、水平和权重，基于数据库中的科学研究，可以从五个自由的角度阐明蛋鸡饲养系统的优缺点。我们还通过将我们的模型与基于环境的动物需求指数（ANI）、另一个基于科学的模型FOWEL以及基于动物的测量结果进行比较，来评估我们模型的实用性。我们的模型显示，在笼子系统中，免受伤害、疼痛和疾病的自由，以及免受不适的自由更安全，而非笼子系统在自然行为和免受恐惧和痛苦方面得分更高。基于动物的评估与ANI总分（rs = 0.94, P < 0.05）、FOWEL总分（rs = 0.99, P < 0.05）或我们的模型总分（rs = 0.99, P < 0.05）之间存在显著的强正相关，这表明这些不同的福利评估方法几乎可以互换使用，以“衡量”共同属性（“蛋鸡整体福利”）。然而，使用我们的模型和FOWEL的评估比ANI更敏感，并且可以应用于笼系统，这表明我们的模型和FOWEL可能具有附加价值。
To increase the validity of evaluations and facilitate expansion and maintenance of assessment systems, we constructed a database of studies on the welfare of laying hens around the world. On the basis of this database, we devised a science-based welfare assessment model. Our model includes measurements, levels and weightings based on the scientific studies in the database, and can clarify the advantages and disadvantages of housing systems for laying hens from the viewpoint of the five freedoms. We also evaluated the usefulness of our model by comparing it with environment-based Animal Needs Index (ANI), another science-based model called FOWEL, and animal-based measurements. Our model showed that freedom from injury, pain and disease, and freedom from discomfort were more secure in the cage system, while non-cage systems scored better for natural behavior and freedom from fear and distress. A significant strong-positive correlation was found between the animal-based assessment and the total scores of ANI (rs = 0.94, P < 0.05), FOWEL (rs = 0.99, P < 0.05) or our model (rs = 0.99, P < 0.05), which indicate that these different approaches to welfare assessment may be used almost interchangeably to 'measure' a common property ('overall laying hen welfare'). However, assessments using our model and FOWEL were more sensitive than ANI and can be applied to cage systems, which suggest that our model and FOWEL may have added value.