Funding for this research was provided by:
U.S. Department of Agriculture (2006-35302-17278)
East Tennessee State University, Denise Pav Research grant (N.A.)
Received: 20 July 2016
Revised: 9 August 2016
Accepted: 15 August 2016
First Online: 29 August 2016
Compliance with ethical standards
: All applicable institutional and national guidelines for the care and use of animals were followed.
: The authors declare that they have no competing interests.