1. Centre for Ecology and ConservationUniversity of Exeter Penryn UK
2. INRA‐Lusignan Lusignan France
3. School of Agriculture and Environment PN433Massey University Palmerston North New Zealand
4. Programa Nacional de Carne y LanaInstituto Nacional de Investigación Agropecuaria (INIA)‐Tacuarembó Tacuarembó Uruguay
5. State Key Laboratory of Grassland Agro‐ecosystemsCollege of Pastoral Agriculture Science and TechnologyLanzhou University Lanzhou China
6. Post Box No. 61 Lanzhou Sao Paolo China
7. Animal Science DepartmentE.S.A. “Luiz de Queiroz”University of São Paulo São Paulo Brazil