Raj M, Gregory N G
Department of Clinical Veterinary Science, University of Bristol, Langford.
Vet Rec. 1994 Sep 3;135(10):222-3. doi: 10.1136/vr.135.10.222.
Spontaneous electroencephalograms (EEG) and somatosensory evoked potentials (SEPS) were recorded in turkeys while they were kept in an atmosphere of either 49 or 86 per cent carbon dioxide in air. The time to the loss of SEPS was not related to the concentration of carbon dioxide, but the time to the onset of an isoelectric EEG was shorter at the higher concentration of carbon dioxide. In comparison with other gas stunning methods it was considered that stunning with these high concentrations of carbon dioxide would not have any welfare advantages over stunning in argon with 2 per cent residual oxygen or in a mixture of 30 per cent carbon dioxide and 60 per cent argon in air.
在火鸡处于空气中二氧化碳含量为49%或86%的环境时，记录其自发脑电图（EEG）和体感诱发电位（SEPS）。SEPS消失的时间与二氧化碳浓度无关，但在较高二氧化碳浓度下，脑电图等电位出现的时间更短。与其他气体致昏方法相比，人们认为用这些高浓度二氧化碳致昏相对于在含2%残余氧气的氩气中致昏或在空气中30%二氧化碳和60%氩气的混合气体中致昏，在福利方面没有任何优势。
