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Part 1 Nutritional requirements
1.Advances in understanding carbohydrate requirements and utilisation in dairy cattle: Larry Chase, Cornell University, USA ;
2.Advances in understanding protein requirements and utilisation in dairy cattle: Jeff Firkins, Ohio State University, USA ;
3.Advances in understanding lipid requirements and utilisation in dairy cattle: James Drackley, University of Illinois, USA ;
Part 2 The use of dietary supplements to optimise dairy cattle nutrition: plant extracts
4.The use of plant extracts as dietary supplements in dairy cow nutrition: plant essential oils: Sergio Calsamiglia, Universidad Autonoma de Barcelona, Spain ;
5.The use of plant extracts as dietary supplements in dairy cow nutrition: condensed tannins: Michael Kreuzer, ETH Zurich, Switzerland ;
6.The use of plant extracts as dietary supplements in dairy cow nutrition: saponins: Chaouki Benchaar, Agriculture and Agri-Food Canada, Canada ;
Part 3 The use of direct-fed microbials (DFM) and other supplements to optimise nutrition
7.The use of direct-fed microbials (DFM)/probiotics as dietary supplements in dairy cow nutrition: lactic acid bacteria and other bacterial DFM: Zhongtang Yu, Ohio State University, USA ;
8.The use of exogenous enzymes as dietary supplements in dairy cow nutrition: Adegbola Adesogan, University of Florida, USA ;
9.The use of amino acids as dietary supplements in dairy cow nutrition: Juan Loor, University of Illinois, USA ;
10.The use of supplements to mitigate enteric methane emission in dairy cattle: Alex Hristov, Penn State University, USA ;
Part 4 Assessing alternative feed sources from agricultural co-products
11.Assessing alternative fibre sources from by-products: Maurice Eastridge, Ohio State University, USA ;
12.Assessing alternative protein sources from by-products: Greg Lardy, North Dakota State University, USA ;