Mohan Raj A B, Gregory N G
AFRC Institute of Food Research, Bristol Laboratory, Langford.
Res Vet Sci. 1990 Nov;49(3):360-3.
The effect of different rates of induction of carbon dioxide anaesthesia on the time to loss of consciousness was investigated in broilers and hens. In experiment 1, 24 and 17 broilers, respectively, were exposed to 45 per cent carbon dioxide within 8 or 18 seconds (accession time). In experiment 2, 18 to 20 broilers and hens were exposed to either 35, 45, 55 or 65 per cent carbon dioxide within 8 seconds. The results indicated that, in general, the rate of accession is more critical than the final concentration of carbon dioxide; however, in 35 per cent carbon dioxide an exposure time of longer than 5 minutes is required to kill the birds. The time to sustained eye closure, time to onset of clonic and tonic convulsions and the duration of convulsive episodes were shorter in broilers than in hens. It is suggested that under commercial situations a final concentration of 55 per cent carbon dioxide would be suitable for killing broilers and hens.
研究了不同二氧化碳麻醉诱导速率对肉鸡和母鸡意识丧失时间的影响。在实验1中，分别将24只和17只肉鸡在8秒或18秒（进入时间）内暴露于45%的二氧化碳中。在实验2中，将18至20只肉鸡和母鸡在8秒内暴露于35%、45%、55%或65%的二氧化碳中。结果表明，一般来说，进入速率比二氧化碳的最终浓度更关键；然而，在35%的二氧化碳浓度下，需要超过5分钟的暴露时间才能杀死禽类。肉鸡持续闭眼的时间、阵挛性和强直性惊厥发作的时间以及惊厥发作的持续时间比母鸡短。建议在商业情况下，55%的二氧化碳最终浓度适合宰杀肉鸡和母鸡。
