Dr Julie Roberts is Associate Professor in the School of Environmental and Rural Science at the University of New England, Australia. She is internationally-renowned for her research on egg production, particularly egg shell quality. She has been awarded the Australian Poultry Award for her outstanding contribution to poultry science. Dr Yves Nys is former Research Director for the Poultry Unit at INRAE, France. As a scientist, he studied calcium metabolism in hens (eggshell quality and fabric), mineral nutrition and egg quality (nutritional value and biological activity of egg proteins). With over 200 publications, Dr Nys is regarded as one of the world’s leading authorities on optimising the nutrition of laying hens. The recipient of a number of awards for his research, he has served as Vice-President of the WPSA, president of the European Federation and has coordinated two major EU research projects on egg quality.

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• Part 1 Animal health and welfare1.Laying hen nutrition: optimizing energy intake, egg size and weight: Y. Nys, Institut National de la Recherche Agronomique (INRA), France2.Laying hen nutrition: optimizing hen performance and health, bone and eggshell quality: Y. Nys, Institut National de la Recherche Agronomique (INRA), France3.Welfare of laying hens: an overview: Tina Widowski, Teresa Casey-Trott, Michelle Hunniford and Krysta Morrissey, University of Guelph, Canada4.Welfare standards for laying hens: Andy Butterworth, University of Bristol, UK5.Welfare issues affecting free-range laying hens: Dana L.M. Campbell, University of New England and CSIRO, Australia, Sarah L, Lambton, University of Bristol, UK, Isabelle Ruhnke, University of New England, Australia and Claire A. Weeks, University of Bristol, UK6.Beak trimming of laying hens: welfare costs and benefits: Dorothy McKeegan, University of Glasgow, UK7.Maintaining the health of laying hens: a practical approach: Richard M. Fulton, Michigan State University, USA8.Managing laying hen flocks with intact beaks: Thea van Niekerk, Wageningen Livestock Research, The NetherlandsPart 2 Sustainability 9.Waste management in egg production: Ruihong Zhang, University of California at Davis, USA; and Hamed. M. El- Mashad, University of California at Davis, USA and Mansoura University, Egypt10.Assessing the sustainability of organic egg production: Jacqueline Jacob and Anthony Pescatore, University of Kentucky, USA

Dr Julie Roberts is Associate Professor in the School of Environmental and Rural Science at the University of New England, Australia. She is internationally-renowned for her research on egg production, particularly egg shell quality. She has been awarded the Australian Poultry Award for her outstanding contribution to poultry science. Dr Yves Nys is former Research Director for the Poultry Unit at INRAE, France. As a scientist, he studied calcium metabolism in hens (eggshell quality and fabric), mineral nutrition and egg quality (nutritional value and biological activity of egg proteins). With over 200 publications, Dr Nys is regarded as one of the world’s leading authorities on optimising the nutrition of laying hens. The recipient of a number of awards for his research, he has served as Vice-President of the WPSA, president of the European Federation and has coordinated two major EU research projects on egg quality.

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• Part 1 Animal health and welfare1.Laying hen nutrition: optimizing energy intake, egg size and weight: Y. Nys, Institut National de la Recherche Agronomique (INRA), France2.Laying hen nutrition: optimizing hen performance and health, bone and eggshell quality: Y. Nys, Institut National de la Recherche Agronomique (INRA), France3.Welfare of laying hens: an overview: Tina Widowski, Teresa Casey-Trott, Michelle Hunniford and Krysta Morrissey, University of Guelph, Canada4.Welfare standards for laying hens: Andy Butterworth, University of Bristol, UK5.Welfare issues affecting free-range laying hens: Dana L.M. Campbell, University of New England and CSIRO, Australia, Sarah L, Lambton, University of Bristol, UK, Isabelle Ruhnke, University of New England, Australia and Claire A. Weeks, University of Bristol, UK6.Beak trimming of laying hens: welfare costs and benefits: Dorothy McKeegan, University of Glasgow, UK7.Maintaining the health of laying hens: a practical approach: Richard M. Fulton, Michigan State University, USA8.Managing laying hen flocks with intact beaks: Thea van Niekerk, Wageningen Livestock Research, The NetherlandsPart 2 Sustainability 9.Waste management in egg production: Ruihong Zhang, University of California at Davis, USA; and Hamed. M. El- Mashad, University of California at Davis, USA and Mansoura University, Egypt10.Assessing the sustainability of organic egg production: Jacqueline Jacob and Anthony Pescatore, University of Kentucky, USA