Funding for this research was provided by:
National Institute of Food and Agriculture (2013-67015-21348, 2015-67015-23246)
Received: 7 March 2019
Accepted: 21 June 2019
First Online: 19 August 2019
Ethics approval and consent to participate
: All samples used in this study were collected from lactating dairy cows according to Research Animal Resource Center (RARC) protocol A01104, approved by the University of Wisconsin-Madison College of Agriculture and Life Sciences Institutional Animal Care and Use Committee.
: Not applicable.
: The authors declare that they have no competing interests.