The late P McDonald was formerly Head of the Department of Agricultural Biochemistry at the Edinburgh School of Agriculture.
The late R A Edwards was formerly Head of the Department of Animal Nutrition at the Edinburgh School of Agriculture.
J F D Greenhalgh is Emeritus Professor of Animal Production and Health at the University of Aberdeen.
C A Morgan was formerly animal nutritionist at the Scottish Agricultural College, Edinburgh.
L A Sinclair is Professor of Animal Science at Harper Adams University.
R G Wilkinson is Principal Lecturer in Ruminant Nutrition at Harper Adams University.