Funding for this research was provided by:
North Carolina Pork Council (2017-1929)
Received: 27 May 2020
Accepted: 30 June 2020
First Online: 22 July 2020
: Phenotypic records presented in this study came from nucleus farms belonging to Smithfield Premium Genetics. Procedures for fecal sample collection adhered to the guidelines of the Institutional Animal Care and Use Committee, North Carolina State University, and National Pork Board.
: Not applicable.
: The authors declare that they have no competing interests.