Apori, S.O., Castro, F.B, Shand, W.J. and Ørskov, E.R. 1998. Chemical composition, in sacco degradation and in vitro gas production of some Ghanaian browse plants. Animal Feed Science and Technology, 76: 129-137.
Chen, X.B., Calder, A.G., Prasitkusol, P., Kyle, D.J.and Jayasuriya, M.C.N. 1998. Determination of 15N isotopic enrichment and concentrations of allantoin and uric acid in urine by gas chromatography/mass spectrometry. Journal of Mass Spectrometry 33, 130-137.
Fonseca, A.J.M., Dias da Silva, A.A. and Ørskov, E.R. 1998. In sacco degradation characteristics as predictors of digestibility and voluntary intake of roughages by mature ewes. Animal Feed Science and Technology, 72: 205-219.
Long, R.J., Chen, X.B., Dong, S.K., Zhang, D.G., Ørskov, E.R.and Hu, Z.Z. 1998. Urinary Excretion of Purine Derivatives in Fed and Fasted Yaks (Bos gruniens). Proc. of the Brit. Soc. Animal Science, Scarborough- UK, March 1998.
Ørskov, E.R. 1998. Direction of livestock research and production in the 21st Century with emphasis on Subsaharan Africa. Tanzanian Animal Production Meeting Avuslia. Tanzania, August 1998.
Ørskov, E.R. 1998. Feed evaluation with emphasis on fibrous roughages and fluctuating supply of nutrients: a review. Small Ruminant Research, 28: 1-8.
Prasitkusol, P., Chen, X.B., Kyle, D.J. and Ørskov, E.R. 1998. Measurement of the proportion of plasma purine derivatives excreted in the urine of sheep. International Atomic Energy Agency meeting. Final Research Coordination Meeting of the FAO/IAEA Coordinated Research Programme. 24-28 August 1998, Vienna, Austria.