Blackmore D K
Res Vet Sci. 1984 Sep;37(2):223-6.
Three fully conscious lambs, two adult sheep, five calves and one young bull were slaughtered by bilateral severance of the carotid arteries and jugular veins while standing. The calves and bull exhibited apparently coordinated body movements for much longer than the lambs and adult sheep. Other signs assumed to be associated with cerebral hypoxia, such as clonic convulsions and pupillary dilation, occurred earlier in the sheep than in the cattle. Although there is no single definitive method for assessing the onset of insensibility in animals during slaughter, it is believed that these findings support previous more objective encephalographic studies which indicated that there are clear cut differences between sheep and cattle.
三只完全清醒的羔羊、两只成年绵羊、五头小牛和一头小公牛站立时通过双侧切断颈动脉和颈静脉进行屠宰。小牛和公牛表现出明显协调的身体运动的时间比羔羊和成年绵羊长得多。其他被认为与脑缺氧相关的迹象，如阵挛性抽搐和瞳孔散大，在绵羊身上比在牛身上出现得更早。虽然没有单一的确定方法来评估动物在屠宰过程中失去知觉的开始，但据信这些发现支持了先前更客观的脑电图研究，该研究表明绵羊和牛之间存在明显的差异。
