This project was conducted in a commercial unit owned by the
Hanor Company, Inc. Appreciation is expressed to the company
for providing access to the facilities and for actively participating
in the study. The project was funded in part by the North Carolina
Agricultural Foundation (Raleigh, NC) and the North Carolina Pork
Council (Raleigh, NC).
2Corresponding author: eric_vanheugten@ncsu.edu.
Received May 9, 2011.
Accepted January 25, 2012.