1. Australian Cooperative Research Centre for Sheep Industry Innovation, University of New England, Armidale, NSW 2351, Australia
2. NSW Department of Primary Industries, Beef Industry Centre, University of New England, Armidale, NSW 2351, Australia
3. University of New England, Armidale, NSW 2351, Australia
4. Department of Agriculture and Food of Western Australia, 3 Baron Hay Court, South Perth, WA, 6151, Australia
5. School of Veterinary and Life Sciences, Murdoch University, 90 South Street, Murdoch, WA 6150, Australia
6. CSIRO Animal, Food and Health Sciences and Sustainable Agriculture Flagship, Floreat, WA 6913, Australia
7. School of Animal Biology, Institute of Agriculture, The University of Western Australia, Crawley, WA 6009, Australia