1. Department of Animal Sciences, Colorado State University, Fort Collins, Colorado, USA
2. Department of Animal Science, University of California, Davis, California, USA
3. Department of Mechanical Engineering, Colorado State University, Fort Collins, Colorado, USA
4. Genome Center, University of California, Davis, California, USA
5. Department of Evolution and Ecology, University of California, Davis, California, USA
6. Department of Medical Microbiology and Immunology, University of California, Davis, Davis, California, USA
7. CIFAR Azrieli Global Scholars program, CIFAR, Toronto, Canada