Veldsman, L.-m.
Kylin, H.
Bronkhorst, P.
Engelbrecht, I.
Bouwman, H. http://orcid.org/0000-0002-7983-7502
Funding for this research was provided by:
North-West University (General funds)
Article History
Received: 10 December 2018
Accepted: 27 February 2019
First Online: 12 March 2019
Compliance with ethical standards
:
: The authors declare no conflict of interest.
: The data collected belong to the Research Unit but will be made available by the corresponding author upon request.
: This manuscript was approved for publication by all the authors.
: Research on human subjects did not occur. Chicken eggs were bought at a supermarket.