1. Division of Reproduction and Obstetrics; Department of Veterinary Clinic, Reproduction and Pathology; Bogor Agricultural University; Bogor Jawa Barat Indonesia
2. Division of Animal Science; Faculty of Animal Science and Fisheries; Sulawesi Barat University; Majene Sulawesi Barat Indonesia
3. Department of Animal Production; Faculty of Animal Science; Hasanuddin University; Makassar Sulawesi Selatan Indonesia