1. Technology and Food Science Unit, Institute for Agricultural and Fisheries Research (ILVO), Brusselsesteenweg 370, 9090 Melle, Belgium
2. Department of Biology, Mycology research group, Ghent University, K. L. Ledeganckstraat 35, 9000 Ghent, Belgium
3. Animal Sciences Unit, Institute for Agricultural and Fisheries Research (ILVO), Scheldeweg 68, 9090 Melle, Belgium