Citation | Yusuf M, Toleng A, Sahiruddin, Masturi, Hasrin, Mansur M, Fatem H, Koibur J (2024). Responses of ovarian activity of dairy holstein friesian heifers after synchronized using heasynch and select synch protocols. Adv. Anim. Vet. Sci., 12(5):923-927. DOI | https://dx.doi.org/10.17582/journal.aavs/2024/12.5.923.927