Gregory Neville G, von Wenzlawowicz Martin, Alam Rashedul M, Anil Haluk M, Yeşildere Tahsin, Silva-Fletcher Ayona
BBSRC & Royal Veterinary College, Hatfield AL9 7TA, UK.
Meat Sci. 2008 Jun;79(2):285-8. doi: 10.1016/j.meatsci.2007.09.012. Epub 2007 Oct 1.
It has previously been shown that the cattle brain is supplied with blood via a basi-occipital plexus, in addition to branches from the carotid and basilar arteries. In addition it has been shown during conventional stunning and slaughter that the carotid arteries in cattle can develop false aneurysms at their severed ends and this can curtail exsanguination. This investigation examined whether false aneurysms can occur during religious slaughter, and during bleeding following electrical stunning that simultaneously induced a cardiac arrest. The prevalence of large (>3cm outer diameter) false aneurysms in cattle carotid arteries was 10% for both shechita and halal slaughter. The prevalence of animals with bilateral false aneurysms (at least 2cm in one artery and at least 3cm diameter in the opposite artery) was 7% and 8% for shechita and halal slaughter, respectively. No false aneurysms occurred during bleeding in cattle that were electrically stunned and simultaneously developed a cardiac arrest. The combination of false aneurysms and collateral routes to the brain present a risk of sustained consciousness during religious slaughter in cattle.
此前已有研究表明，除了来自颈动脉和基底动脉的分支外，牛脑还通过枕骨基部丛供血。此外，常规击晕和屠宰过程中发现，牛的颈动脉在切断端会形成假性动脉瘤，这可能会减少放血。本研究调查了宗教屠宰过程中以及电击晕同时导致心脏骤停后的放血过程中是否会出现假性动脉瘤。在犹太教屠宰和清真屠宰中，牛颈动脉中大型（外径>3cm）假性动脉瘤的发生率均为10%。犹太教屠宰和清真屠宰中双侧假性动脉瘤（一条动脉至少2cm，另一侧动脉至少3cm直径）动物的发生率分别为7%和8%。在电击晕并同时发生心脏骤停的牛放血过程中未出现假性动脉瘤。假性动脉瘤和通往大脑的侧支途径的组合会使牛在宗教屠宰过程中存在持续意识的风险。
