Funding for this research was provided by:
Gauteng Department of Agriculture and Rural Development (2014/15)
Article History
Received: 4 September 2018
Accepted: 7 January 2019
First Online: 31 January 2019
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: This project was approved by the Animal Use and Care Committee of the University of Pretoria (project V058/14).