About the Authors

Brian W. Kirkpatrick

bwkirkpa@wisc.edu

Affiliation Department of Animal Sciences, University of Wisconsin-Madison, Madison, WI, United States of America

Chris A. Morris

Affiliation AgResearch, Ruakura Research Centre, PB 3123, Hamilton, New Zealand

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: BWK CAM. Performed the experiments: BWK. Analyzed the data: BWK. Contributed reagents/materials/analysis tools: BWK CAM. Wrote the paper: BWK CAM.