Pavani, Krishna, IITAA (Research Institute for Agricultural and Environmental Technology), Animal Reproduction, University of the Azores, Dept. of Agrarian Sciences, Angra do Heroísmo 9700-042, Portugal University of Ghent, Faculty of Veterinary Medicine, Dept. of Reproduction, Obstetrics and Herd Health, Salisburylaan 133, B-9820 Merelbeke, Belgium