1. Pontificia Universidad Católica de Chile, Departamento de Ciencias Animales, Facultad de Agronomía e Ingeniería Forestal , Santiago 4860 , Chile
2. Instituto de Investigaciones Agropecuarias, INIA Carillanca , Temuco , Chile
3. Universidad de Chile, Instituto de Nutrición y Tecnología de los Alimentos (INTA) , El Líbano 5524, Macul, Santiago , Chile
4. Department of Veterinary and Animal Sciences, University of Co-penhagen , Grønnegårdsvej 3, 1870 Frederiksberg C , Denmark
5. Dairy Science Department, National Research Centre , Giza , Egypt
6. Dipartimento di Scienze Agrarie, Alimentari e Agro-ambientali, Università di Pisa , 56124 Pisa , Italy
7. Queen’s University of Belfast, Institute for Global Food Security, School of Biological Sciences , Belfast, BT9 7BL , UK
8. Department of Animal Sciences and Division of Nutritional Sciences, University of Illinois, Mammalian NutriPhysioGenomics , Urbana 61801 , USA
9. Department of Animal Sciences, School of Agriculture, Policy and Development, University of Reading , Reading RG6 6EU , UK