Electroencephalographic responses to concussive non-penetrative captive-bolt stunning in halothane-anaesthetised calves

被引：23
|
作者：
Gibson, T. J. [1 ,2 ]
Johnson, C. B. [1 ,2 ]
Murrell, J. C. [2 ]
Mitchinson, S. L. [1 ,2 ]
Stafford, K. J. [1 ,2 ]
Mellor, D. J. [1 ,3 ]
机构：
[1] Massey Univ, Anim Welf Sci & Bioeth Ctr, Palmerston North 4442, New Zealand
[2] Massey Univ, Inst Vet Anim & Biomed Sci, Palmerston North 4442, New Zealand
[3] Massey Univ, Inst Food Nutr & Human Hlth, Palmerston North 4442, New Zealand
来源：
NEW ZEALAND VETERINARY JOURNAL | 2009年 / 57卷 / 02期
关键词：
Calves; compressed spectral array; concussive stunning; electroencephalogram; minimal anaesthesia; non-penetrative stunning; slaughter; BRAIN-TISSUE; SLAUGHTER; CATTLE; SHEEP; PERCUSSION; HEAD;
D O I：
10.1080/00480169.2009.36884
中图分类号：
S85 [动物医学（兽医学）];
学科分类号：
0906 ;
摘要：
AIM: To investigate the electroencephalographic ( EEG) and cardiovascular responses of halothane-anaesthetised calves to non-penetrative captive-bolt stunning. METHODS: Ten calves were minimally anaesthetised with halothane, using an established anaesthesia protocol. The EEG, blood pressure and electrocardiogram (ECG) were recorded before and after non-penetrative captive-bolt stunning. Visual inspection and alterations in the total power of the EEG (Ptot) were used to investigate the effects of stunning. RESULTS: Captive-bolt stunning significantly altered cerebrocortical function in all animals. In four animals, Ptot decreased immediately following stunning and remained low throughout the recording period. In another five animals, Ptot responded to stunning in a biphasic manner characterised by an immediate decrease followed by a transient increase and then a final decrease to values similar to those of the non-biphasic animals. CONCLUSIONS: Non-penetrative captive-bolt stunning significantly altered cerebrocortical function in halothane-anaesthetised calves. The changes in cerebrocortical function would be sufficient to produce insensibility within 0 to 14 seconds in conscious animals.
引用
收藏
页码：90 / 95
页数：6
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