Bartolome, J A Resynchronization of ovulation and timed insemination in lactating dairy cows I: use of the Ovsynch and Heatsynch protocols after non-pregnancy diagnosis by ultrasonography. [electronic resource] - Theriogenology Apr 2005 - 1617-27 p. digital Publication Type: Journal Article ISSN: 0093-691X Standard No.: 10.1016/j.theriogenology.2004.07.016 doi Subjects--Topical Terms: AnimalsCattle--physiologyDinoprost--administration & dosageEstradiol--administration & dosageEstrous CycleEstrus SynchronizationFemaleGonadotropin-Releasing Hormone--administration & dosageInsemination, Artificial--methodsLactationOvulation Induction--methodsPregnancyTime FactorsUltrasonography--veterinary