Institute for Animal Hygiene, Animal Welfare and Farm Animal Behaviour, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, 30173 Hannover, Germany.
Institute for Animal Hygiene, Animal Welfare and Farm Animal Behaviour, University of Veterinary Medicine Hannover, Foundation, Bischofsholer Damm 15, 30173 Hannover, Germany.
Meat Sci. 2020 Jan;159:107934. doi: 10.1016/j.meatsci.2019.107934. Epub 2019 Aug 30.
The aim of this pilot study was to develop and evaluate an automated system for the assessment of ear and tail lesions as welfare indicators in pigs at the abattoir. A camera-based system was constructed to enable automatic assessment. This was evaluated in comparison to a standard observer, defined as skilled human veterinary observer, based on 5952 carcasses. We detected significant values for ear lesions (sensitivity, 77.0; specificity, 96.5; accuracy, 95.4%) and good values for tail lesions (sensitivity, 77.8%; specificity, 99.7%; accuracy, 99.5%). The reliabilities of assessments by four individual human observers directly at the abattoir and the camera system were calculated using Krippendorff's alpha. These varied between 0.42 and 0.67 for ear lesions and 0.42 and 0.55 for tail lesions, while better values were reached for the agreement between the system and picture-based evaluation (0.64 for ear lesions and 0.75 for tail lesions). More scientific evaluations at different abattoirs are now needed to further test and improve the camera-based system and its various scopes of application.
本研究旨在开发和评估一种自动评估屠宰场猪耳朵和尾巴损伤的系统，作为福利指标。构建了一个基于摄像头的系统来实现自动评估，并与标准观察者（定义为熟练的兽医人类观察者）进行了比较，该标准观察者基于 5952 个尸体进行评估。我们检测到耳朵损伤的显著值（敏感性 77.0%，特异性 96.5%，准确性 95.4%）和尾巴损伤的良好值（敏感性 77.8%，特异性 99.7%，准确性 99.5%）。利用 Krippendorff 的 alpha 计算了四个在屠宰场直接进行评估的个体人类观察者和摄像头系统评估的可靠性。对于耳朵损伤，其值在 0.42 和 0.67 之间，对于尾巴损伤，其值在 0.42 和 0.55 之间，而系统与基于图片的评估之间的一致性达到了更好的值（耳朵损伤为 0.64，尾巴损伤为 0.75）。现在需要在不同的屠宰场进行更多的科学评估，以进一步测试和改进基于摄像头的系统及其各种应用范围。
