Heersche, G. Jr.; Kiracofe, G.; McKee, M.; Davis, D.L.; Brower, G.R.
(Kansas State University. Agricultural Experiment Station, 1974)
Forty-seven of 50 heifers were in estrus 1 to 5 days after an injection
of prostaglandin given when an ear implant of Synchro-mate B was removed.
The implant had been in place one week. Thirty of the 47 (63.8%) heifers
with ...