International Journal of Poultry Science1682-83561994-7992Asian Network for Scientific Information10.3923/ijps.2018.205.210KentJohn P. SalamonAttila 52018175Clarity in the terminology used in animal welfare regulation and science is important. The use of the terms cervical dislocation and stunning in regulations regarding on-farm poultry slaughter and the role of the scientific evidence in developing these regulations are examined. It is concluded that the use of limited scientific evidence can unwittingly lead to a reduction in animal welfare standards. To avoid such dilemmas, it is suggested that clear definitions in the terminology used is essential at all levels from the design of experiments, the interpretation of results, the work of scientific committees and drafters of legislation and subsequently at the level of the competent authorities and enforcers. If this clarity is not achieved and it has not been achieved in some instances, then confusion and misunderstanding will arise, with negative consequences for animal welfare, primary producers and professionals.]]>Stevens, S.S.,193542517527Martin, P. and P. Bateson,1986Lehner, P.,19962nd Edn.,Pages: 672Pages: 672Hogan, J.A.,2017Bernard, L.L.,1924Tinbergen, N.,1951Council of the European Union,2009L303121European Commission,2017Gregory, N.G. and S.B. Wotton,1990126570572European Food and Safety Authority (EFSA),200445129Erasmus, M.A., P. Lawlis, I.J.H. Duncan and T.M. Widowski,20108913451354European Food and Safety Authority (EFSA),2006326118Council of the European Union,1992L208910Kijowski, J., A. Mikolajczak, L. Kwitowski, J. Nencki and M. Sliga,2005147578Salamon, A.,20122012The European Parliament and The Council of The European Union,2004L139154Blokhuis, H.J., B. Roth, S. Holst, R. Mohan and C. Terlouw,20042004Sparrey, J., D.A. Sandercock, N.H.C. Sparks and V. Sandilands,201470737758Verhoeven, M.T.W., M.A. Gerritzen, L.J. Hellebrekers and B. Kemp,20159320330Anil, M.H.,1991301321Hewitt, L.,20002000Hewitt, L.,20042004Gibson, T.J., C.B. Rebelo, T.A. Gowers and N.M. Chancellor,2018591320Martin, J.E., D.E. McKeegan, J. Sparrey and V. Sandilands,201625227241Martin, J.E., V. Sandilands, J. Sparrey, L. Baker and D.E. McKeegan,20182018Cranley, J.,201712425