NR ZCDF

AU Kallweit,E.; Ellendorf,F.; Daly,C.C.; Smidt,D.

TI Physiological responses of slaughter with and without stunning

QU Seminar on pre-slaughter stunning of food animals, European Conference Group on the Protection of Farm Animals, Brussels, 2 - 3 June 1987

PT Proceedings

AB In experiment I differences found between treatment groups in cortical activity were analyzed and not significant. Total handling period of animals during slaughter was longest for the animals that were stunned. No differences were obvious for haemoglobin content of muscle samples; that is, in all cases very little blood remained in the meat. Plasma cortisol and pH measurement do not indicate increased excitement or fear for any of the treatment groups. In experiment II time for disappearance of cortical activity was shorter in captive bolt stunned cows. In addition, no evoked response appeared after the stun, whereas after shechita they lasted for 77 sec for SERs and 55 sec for VERs with large variability. The presence of ECoG activities without evoked responses demonstrates the difficulty of using the ECoG as an indicator of consciousness. The absence of evoked responses may indicate brain damage, e. g. cortical spreading depression, that may result in loss of pain perception.

SP englisch

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