Contreras-Jodar Alexandra, Varvaró-Porter Aranzazu, Michel Virginie, Velarde Antonio
Animal Welfare Program, Institute of Agrifood Research and Technology (IRTA), 17121 Monells, Spain.
Direction of Strategy and Programmes, French Agency for Food, Environmental and Occupational Health & Safety (ANSES), 14 Rue Pierre et Marie Curie, 94701 Maisons-Alfort, France.
Animals (Basel). 2022 Jul 13;12(14):1800. doi: 10.3390/ani12141800.
This study evaluated the prevalence and tested the inter-observer repeatability of the most valid and feasible animal-based indicators of the state of consciousness after waterbath stunning in broilers before bleeding (tonic seizure, breathing, spontaneous blinking and vocalization) and during bleeding (wing flapping, breathing, spontaneous swallowing and head shaking). In addition, correlations among them were computed to better understand their relationship and offer insights into the reliability of such indicators. This was aimed at proposing a refined list of indicators that could be used in commercial slaughterhouses to ensure consistent assessments. This study compared the assessments of three observers of 5241 broilers from 19 batches in six different slaughterhouses. Inter-observer repeatability was assessed through the combination of the crude percentage of agreement and the Fleiss' kappa coefficient and interpretation. Before bleeding, the results led us to recommend assessing breathing over spontaneous blinking and vocalizations and to neglect tonic seizure in commercial conditions. During bleeding, the recommended indicators are breathing, wing flapping and head shaking while spontaneous swallowing can be neglected.
本研究评估了肉鸡在水浴致昏后放血前（强直性惊厥、呼吸、自发眨眼和发声）以及放血期间（扑翅、呼吸、自发吞咽和摇头）最有效且可行的基于动物的意识状态指标的患病率，并测试了观察者间的重复性。此外，计算了这些指标之间的相关性，以更好地理解它们之间的关系，并深入了解此类指标的可靠性。目的是提出一份经过完善的指标清单，可用于商业屠宰场以确保评估的一致性。本研究比较了来自六个不同屠宰场19个批次的5241只肉鸡的三名观察者的评估结果。通过一致性的原始百分比和Fleiss卡帕系数及解释相结合来评估观察者间的重复性。放血前，结果使我们建议在商业条件下评估呼吸时优先于自发眨眼和发声，并忽略强直性惊厥。放血期间，推荐的指标是呼吸、扑翅和摇头，而自发吞咽可忽略不计。
