Lamb, G.C.; Miller, B.L.; Traffas, V.; Corah, L.R.
(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 1997)
In April, 1996, 1501 yearling crossbred
heifers located on seven different ranches were
estrus-synchronized and artificially inseminated
(AI) 12 hours after they were detected in estrus.
Herd size ranged from 82 to 43 ...