Corah, L.R.; Beal, W.E.; Stevenson, J.S.; Spire, M.F.
(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 1989)
Injecting a GnRH-analog at the time of estrus or at insemination did not generally
improve conception rates in heifers inseminated following a synchronized estrus. However,
within some herds. a significant positive ...