Darawiroj, D.; Raksaseri, P.; Piyaviriyakul, P.; Jitthakhot, S.; Kornmatitsuk, S.; Nakthong, C.; Tanasak, J.; Kornmatitsuk, B. Delayed ovarian resumption in Holstein lactating cows: association with elevated beta-hydroxybutyrate levels during early postpartum period. TJVM 2017, 47, 449-455.