ZDAW.htm

NR ZDAW

AU van der Wal,P.G.

TI Stunning procedures for pigs and their physiological consequences

QU Proc. 2nd int. Symp. Condition Meat Quality Pigs, Zeist, 1971, Pudoc, Wageningen

PT Proceedings

AB Three different principles in stunning slaughter animals have been discussed. Two of them have been found suitable for industrial purposes; stunning with carbon dioxide gas and electric stunning. Carbon dioxide stunning results in low blood and muscle pH values, a high lactate concentration in muscle, and fewer haemorrhages. Electric stunning with a low voltage, about 70 V during about 15 sec, as well as electro-shock stunning (about 300 V administered for a very short time), can be used. In the low voltage method we observed strong muscle contractions. The higher ultimate pH value of the muscle and the occurrence of haemorrhages are disadvantages. Electro-shock also results in a high muscle pH, but there is a more complete and rapid exsanguination, and blood splashings are less severe than in the low voltage method. The third method by means of a captive-bolt instrument, is less applicable to industry. In this procedure violent muscle contractions, poor debleeding and haemorrhages were observed.

SP englisch

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