1 Gastro-Intestinal Microbiology and Biotechnology Unit, Agricultural Research Council-Animal Production, Irene 0062, Private Bag X02, Pretoria, South Africa.
2 Food Security and Safety Niche Area, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho, 2735, South Africa.
3 Crop Science Unit, Agricultural Research Council- Vegetable and Ornamental Plants, Roodeplaat 0001, Private Bag X293, Pretoria, South Africa.
4 Gastro-Intestinal Microbiology and Biotechnology Unit, Agricultural Research Council-Animal Production, Irene 0062, Private Bag X02, Pretoria, South Africa. AiyegoroO@arc.agric.za.