Corah, L.R.; McKee, M.; Schalles, R.R.
(Kansas State University. Agricultural Experiment Station, 1977)
One hundred twenty-seven suckling calves were allotted to one of
three treatments:
(1) Control group - not implanted
(2) Implanted (Ralgro) once during sucking period
(3) Implanted (Ralgro) twice during sucking period ...