Electrical stunning is likely to remain an important stunning method for turkeys at slaughter. The purpose of this study is to understand the application of various waveforms of alternating current (AC) and pulsed direct currents (DC), head-only, to turkeys and to improve the effectiveness of handheld stunning of turkeys. We evaluated the effectiveness of stunning by documenting physical responses and recording electroencephalograms (EEGs). For the assessment of physical responses, the stunning voltage was varied depending on the proportion of animals effectively stunned at a certain voltage level. If all turkeys in a group of 10 were stunned, the voltage was decreased, and the next group was stunned. This was repeated until not all turkeys showed signs of being effectively stunned. The experiment was then repeated at the voltage level just above the one that showed incomplete effective stunning. The effects of the stunning on the EEG recording was assessed in 16 turkeys to measure the occurrence of epileptiform EEGs, in 14 turkeys to assess epileptiform EEGs after neck-cut (bleeding), and in 14 turkeys to assess the effect of increased voltage and reduced frequency on epileptiform EEGs. Assessing EEGs in a laboratory setting contributes considerably to the understanding of electrical stunning procedures. Voltages between 125 and 250 V, depending on the waveform assessed, were effective in producing an effective stun in turkeys in this study.

中文翻译：

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土耳其的惊艳表演第2部分：主观和客观评估交流和直流波形的应用

对于击杀火鸡，电击晕可能仍然是重要的击晕方法。本研究的目的是了解火鸡的各种交流电（AC）和脉冲直流电（DC）波形在火鸡上的应用，并提高火鸡手持击晕的效率。我们通过记录身体反应和记录脑电图（EEG）来评估击晕的有效性。为了评估身体反应，根据在一定电压水平下有效惊呆的动物比例，改变击晕电压。如果将十只火鸡中的所有火鸡都击晕，则电压会降低，下一组也会被击晕。重复这一过程，直到并非所有的火鸡都表现出被有效击晕的迹象。然后在刚好显示不完全有效击晕电压的电压水平上重复该实验。在16只火鸡中评估惊厥对EEG记录的影响，以评估癫痫样脑电图的发生;在14只火鸡中评估颈切（出血）后的癫痫样脑电图;在14只火鸡中评估电压升高和降低的效果癫痫样脑电图的频率。在实验室环境中评估脑电图可极大地有助于理解电击晕程序。在此研究中，取决于所评估的波形，介于125至250 V之间的电压可有效地在火鸡上产生有效的电晕。在14头火鸡中评估切开（出血）后的癫痫样脑电图；在14头火鸡中评估升高电压和降低频率对癫痫样脑电图的影响。在实验室环境中评估脑电图可极大地有助于理解电击晕程序。在此研究中，取决于所评估的波形，介于125至250 V之间的电压可有效地在火鸡上产生有效的电晕。在14头火鸡中评估切开（出血）后的癫痫样脑电图；在14头火鸡中评估升高电压和降低频率对癫痫样脑电图的影响。在实验室环境中评估脑电图可极大地有助于理解电击晕程序。在此研究中，取决于所评估的波形，介于125至250 V之间的电压可有效地在火鸡上产生有效的电晕。