1. Department of Rural Development and Agrarian Reform, Döhne Agricultural Development Institute, Private Bag X15, Stutterheim 4930, South Africa; Department of Livestock and Pasture, Faculty of Science and Agriculture, University of Fort Hare, Private Bag X1314, Alice 5700, South Africa.
2. Department of Livestock and Pasture, Faculty of Science and Agriculture, University of Fort Hare, Private Bag X1314, Alice 5700, South Africa.
3. Department of Livestock and Pasture, Faculty of Science and Agriculture, University of Fort Hare, Private Bag X1314, Alice 5700, South Africa; Department of Agriculture and Animal Health, University of South Africa, Florida, South Africa.
4. Department of Rural Development and Agrarian Reform, P.O. Box 112, Queenstown 5320, South Africa.
5. Department of Rural Development and Agrarian Reform, Döhne Agricultural Development Institute, Private Bag X15, Stutterheim 4930, South Africa; Department of Agriculture and Animal Health, University of South Africa, Florida, South Africa.
6. Department of Rural Development and Agrarian Reform, Döhne Agricultural Development Institute, Private Bag X15, Stutterheim 4930, South Africa.
7. Department of Rural Development and Agrarian Reform, Private Bag X3090, Butterworth 4960, South Africa.
8. Department of Rural Development and Agrarian Reform, Private Bag X6012, Port Elizabeth 6001, South Africa.