Affiliation: | 1.The National Dairy Development Board, Anand, Gujarat, India ;2.The Veterinary Office, Jwaneng, Botswana ;3.Department of Obstetrics and Gynaecology, Swedish University of Agricultural Sciences, S-750 07, P. O. Box 7039, Uppsala, Sweden ;4.Department of Clinical Chemistry, Swedish University of Agricultural Sciences, Uppsala, Sweden ; |