ZDHC.htm

NR ZDHC

AU Raj,A.B.M.

TI Gas stunning broilers: bird welfare and product quality

QU Proceedings Symposium 'Alternative stunning methods for poultry', Utrecht, Niederlande, 18.-21. November 1997

PT Proceedings

AB The welfare and meat quality implications of stunning broilers with gas mixtures were evaluated using broiler chickens in a series of experiments carried out under either laboratory or commercial conditions. The results showed that exposure of broilers to either 90% argon in air or a mixture of 30% carbon dioxide and 60% argon in air resulted in rapid induction of unconsciousness and death in all the birds within a 2 minute exposure time. Stunning/killing of broilers with gas mixtures do not impede with the total blood loss provided neck cutting is performed within 3 minutes after exposure to gas mixtures. Stunning/killing of broilers with gas mixtures, in comparison with electrical stunning, results in a significant reduction in the prevalence of carcase appearence defects and breast muscle haemorrhaging. Stunning/killing of broilers with either 90% argon in air or a mixture of 30% carbon dioxide and 60% argon in air results in an accelerated rigor development. This will enable portioning or filleting of carcase early post mortem (4 hours) without adversely affecting the cooked breast meat texture. The results also showed that stunning / killing methods had very little effect on the protein functionality of breast meat.

SP englisch

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