Faculty of Natural and Agricultural Sciences
School of Agricultural and Food Sciences
Department of Animal and Wildlife Sciences
van Ryssen, JBJ
BSc(Agric)(Pret) MSc(Agric) PhD(Natal) - Professor Emeritus
NRF Rating: C2
Contact Details
Research Interests
Research Output
Contact Details:
Telephone number: 012 420 3265
Fax number: 012 420 3290
E-mail address: jvryssen@postino.up.ac.za
Research Interests:
Nutrition
Production systems and management
Research Output:
Research articles in refereed specialist journals:
van Ryssen JBJ, Schroeder GE: 2003. Effect of heat processing of protein sources on the disappearance of their selenium from mobile bags in the digestive tract of dairy cows. Animal Feed Science and Technology, 107, pp 15-27.
Lukhele MS, van Ryssen JBJ: 2003. The chemical composition and potential nutritive value of the foliage of four subtropical tree species in southern Africa for ruminants. South African Journal of Animal Science, 33 (2), pp 132-141.
Papers in refereed, published conference proceedings:
van Ryssen JBJ, Mavimbela DT: 2003. Avoiding potential problems when feeding broiler litter to ruminants during periods of feed shortage: A southern African perspective. In Proceedings of the Fifth International Conference on Technology and Development in the New Millennium, Univerity of Karachi, pp 185-194.
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