Warren, J.H.; Blum, J.; Schalles, R.R.; Kiracofe, G.; Henry, K.; Hultine, V.
(Kansas State University. Agricultural Experiment Station, 1976)
Severa1 reproductive traits of yearling Polled Hereford bulls were
evaluated during and immediately after a 140-day feeding test. Results
indicate that concentration of sperm and percentages of live sperm are
heritable ...