Butterworth, A. (1999). Infectious components of broiler lameness: A review. World’s Poultry Science Journal, 55, 327–352.CrossRef

Cantieni, J. (1976). Ein Beitrag zur CO2-Betabung von Schlachtschweinen. Schweizer Archiv für Tierheilkunde, 119, 355–375.

Coenen, A., Smit, A., Zhonghua, L. and van Luijtelaar, G. (2000). Gas mixtures for anaesthesia and euthanasia in broiler chickens. World’s Poultry Science Journal, 56, 225–234.CrossRef

Danbury, T.C., Weeks, C.A., Chambers, J.P., Waterman-Pearson, A.E. and Kestin, S.C. (2000). Self-selection of the analgesic drug carprofen by lame broiler chickens. Veterinary Record, 146, 307–311.PubMedCrossRef

Dell, P., Hugelin, A. and Bonvallet, M. (1961). Effects of hypoxia on the reticular and cortical diffuse systems. In Cerebral Anoxia and the Electroencephalogram (Eds. Gustaut, H. and Meyer, J.S.). Charles C. Thomas, Springfield, IL, USA, pp. 46–58.

Dreifuss, F.E. and Ogunyemi, A.O. (1992). Classification of epileptic seizures and the epilepsies: An Overview. Epilepsy Research Supplement, 6, 3–11.PubMed

Ernsting, J. (1965). The effect of anoxia on the central nervous system. In A Text Book of Aviation Physiology (Ed. Gillies, J.A.). Pergamon Press, Oxford, UK, pp. 271–289.

FAWC (1982). Report on the Welfare of Poultry at the Time of Slaughter. Farm Animal Welfare Council, Tolworth, Surrey, UK.

FAWC (2009). Report on the Welfare of Farmed Animals at Slaughter or Killing. Part 2 : White Meat Animals. Farm Animal Welfare Council, Area 5A, 9 Millbank, c/o Nobel House, 17 Smith Square, London, UK.

Firman, J.D. and Beck, M.M. (1984). GABA in brain tissue of paroxysmal (px) chicks. Comparative Biochemistry and Physiology, 79C, 143–145.

Gentle, M.J. (1992). Ankle joint (Artc. Intertarsalis) receptors in the domestic fowl. Neuroscience, 49, 991–1000.PubMedCrossRef

Gentle, M.J. and Tilston, V.L. (2000). Nociceptors in the legs of poultry: Implications for potential pain in preslaughter shackling. Animal Welfare, 9, 227–236.

Gregory, N.G. (1987). The physiology of electrical stunning and slaughter. In Humane Slaughter of Animals for Food. Universities Federation for Animal Welfare, Potters Bar, UK, pp 3–12.

Gregory, N.G., Raj, A.B.M., Audsley, A.R.S. and Daly, C.C. (1990). Effects of carbon dioxide on man. In: The Use of Carbon Dioxide for the Stunning of Slaughter Pigs. Report of a meeting of experts held in Heeze, The Netherlands, 26–27th January 1990. Flieschwirtschaft, 70: 1173–1174.

Gregory, N.G. and Wilkins, L.J. (1989). Effect of stunning current on carcase quality in chickens. Veterinary Record, 124, 530–532.PubMedCrossRef

Gregory, N.G. and Wotton, S.B. (1986). Effect of slaughter on the spontaneous and evoked activity of the brain. British Poultry Science, 27, 195–205.PubMedCrossRef

Gregory, N.G. and Wotton, S.B. (1987). Effect of electrical stunning on the electroencephalogram in chickens. British Veterinary Journal, 143, 175–183.PubMedCrossRef

Gregory, N.G. and Wotton, S.B. (1989). Effect of electrical stunning on somatosensory evoked potentials in chickens. British Veterinary Journal, 145, 159–164.PubMed

Gregory, N.G. and Wotton, S.B. (1990a). Effect of stunning on spontaneous physical activity and evoked activity in the brain. British Poultry Science, 31, 215–220.PubMedCrossRef

Gregory, N.G. and Wotton, S.B. (1990b). An evaluation of the effectiveness of handheld stunners for stunning chickens. Veterinary Record, 126, 290–291.PubMed

Gregory, N.G. and Wotton, S.B. (1991). Effect of a 350 Hz DC stunning current on evoked responses in the chicken’s brain. Research in Veterinary Science, 50, 250–251.PubMedCrossRef

Griffiths, G.L. (1985). The occurrence of red-skin chicken carcasses. British Veterinary Journal, 141, 312–314.PubMed

Griffiths, G.L. and Purcell, D.A. (1984). A survey of slaughter procedures used in chicken processing plants. Australian Veterinary Journal, 61, 399–401.PubMedCrossRef

Gruss, M. and Braun, K. (1997). Distinct activation of monoaminergic pathways in chick brain in relation to auditory imprinting and stressful situations: A microdialysis study. Neuroscience, 76, 891–899.PubMedCrossRef

HMSO (1995). The Welfare of Animals (Slaughter or Killing) Regulations, 1995, No. 731. Her Majesty’s Stationery Office, London, UK.

Harris, C.E. and Carter, T.A. (1977). Broiler blood losses with manual and mechanical killers. Poultry Science, 56, 1827–1831.