牛气动式穿透和非穿透式固定角铁致昏的脑电图评估。
Electroencephalographic assessment of pneumatically powered penetrating and non-penetrating captive-bolt stunning of bulls.
机构信息
Department of Pathobiology and Population Sciences, Royal Veterinary College, University of London, London, United Kingdom.
Programa de Pós-graduação em Zootecnia, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista, 14.884-900 Jaboticabal, SP, Brazil; Grupo de Estudos e Pesquisas em Etologia e Ecologia Animal, Departamento de Zootecnia, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista, 14.884-900 Jaboticabal, SP, Brazil.
出版信息
Meat Sci. 2019 May;151:54-59. doi: 10.1016/j.meatsci.2019.01.006. Epub 2019 Jan 22.
The electroencephalographic (EEG) responses of 31 bulls (zebu crossbred cattle) stunned with either pneumatically powered Jarvis penetrating (PCB) or non-penetrating captive bolt (NPCB) was examined. Animals were organized into two treatment groups: PCB (n = 20); and NPCB (n = 11) stunning, both using airline pressures of 220 psi (1517 kPa). All bulls shot with PCB (n = 20/20) had patterns of EEG activity that were inconsistent with consciousness. Of the cattle shot with NPCB 82% (n = 9/11) showed waveforms suggesting complete unconsciousness. After stunning two NPCB bulls had periods of normal EEG activity and maintenance (Ptot, delta, theta, beta) or increased (alpha) spectral power compared to pre-treatment values, indicating incomplete concussion. The study showed that pneumatic PCB stunning was effective in rendering all bulls unconscious, while NPCB was less effective. This highlights the potential animal welfare risks associated with NPCB compared to PCB stunning of mature bulls in commercial abattoirs.
对 31 头公牛（杂交瘤牛）的脑电图（EEG）反应进行了检查，这些公牛分别使用气动动力 Jarvis 穿透式（PCB）或非穿透式捕捉螺栓（NPCB）进行电击。动物被分为两组处理：PCB（n=20）；和 NPCB（n=11）电击，两者均使用 220 psi（1517 kPa）的航空压力。所有使用 PCB 电击的公牛（n=20/20）的 EEG 活动模式均与意识不一致。使用 NPCB 电击的牛中有 82%（n=9/11）的牛表现出完全无意识的波形。在电击后，与治疗前相比，有两头 NPCB 公牛的 EEG 活动和维持（Ptot、delta、theta、beta）或增加（alpha）的光谱功率增加，表明脑震荡不完全。研究表明，气动 PCB 电击可有效使所有公牛失去知觉，而 NPCB 电击则效果较差。这突出了与成熟公牛在商业屠宰场使用 PCB 电击相比，NPCB 电击可能存在的动物福利风险。
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