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Abstract

THE State has now 5 cooperative units for artificial insemination, including about 5500 cows; the original unit, begun in May 1938, has 240 members with 2600 cows. Insemination rate per pregnancy varies for young as well as mature bulls and among bulls with the same semen density and sperm...

Author(s)
BARTLETT, J. W.; PERRY, E. J.
Citation
Record of Proceedings. American Society of Animal Production, 1939, pp 243-245