Gregory N G, Wenzlawowicz M von, Holleben K von
BBSRC and Royal Veterinary College, Veterinary Clinical Sciences, Hawkshead Lane, Hatfield AL9 7TA, UK.
Meat Sci. 2009 May;82(1):13-6. doi: 10.1016/j.meatsci.2008.11.021. Epub 2008 Dec 10.
Bovine respiratory tracts were examined for blood following shechita without stunning, halal slaughter without stunning, and captive bolt stunning with sticking. In all three methods the cattle were in the upright (standing) position at the start of bleeding. Those that had not been stunned continued to breathe during the early part of bleeding whilst those that were stunned were not breathing. Nineteen percent of the shechita, 58% of the halal and 21% of the stunned plus stuck cattle had blood lining the inner aspect of the trachea. Thirty six percent, 69% and 31% had blood in the upper bronchi, respectively. Ten percent, 19% and 0% had fine bright red blood-tinged foam in the trachea, respectively. It was concluded that concerns about suffering from airway irritation by blood could apply in animals that are either not stunned before slaughter or do not lose consciousness rapidly whilst blood is present in the respiratory tract.
对牛的呼吸道进行了检查，检查对象包括未经致昏的犹太教屠宰、未经致昏的清真屠宰以及电击致昏后放血的情况。在所有这三种方法中，放血开始时牛均处于直立（站立）姿势。那些未被致昏的牛在放血初期仍继续呼吸，而那些被致昏的牛则没有呼吸。19%的犹太教屠宰牛、58%的清真屠宰牛以及21%的电击致昏后放血的牛，其气管内表面有血液附着。上支气管中有血液的比例分别为36%、69%和31%。气管中有细小的鲜红色血性泡沫的比例分别为10%、19%和0%。得出的结论是，对于在屠宰前未被致昏或者在呼吸道中有血液时未迅速失去意识的动物，有可能会出现因血液刺激气道而遭受痛苦的情况。
