Odde, K.G.; Kiracofe, G.H.; Ward, H.S.; Brethour, J.
(Kansas State University. Agricultural Experiment Station, 1980)
Seventy-five cows were used to compare the fertilizing abilities of
sperm packaged in 0.5-ml straws and thawed in warm water to similarly packaged
sperm thawed in the inseminating gun. A system of competitive mating
provided ...