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Studies on reproductive capacity of Korean native bulls 1. Effects of age, season and collection frequency on semen characteristics in bulls



Studies on reproductive capacity of Korean native bulls 1. Effects of age, season and collection frequency on semen characteristics in bulls



Proceedings, The Fifth World Conference on Animal Production, August 14-19, 1983 Volume 2 Free communication papers: 155-156



A least-squares analysis was carried out on data on 2488 ejaculates. Overall, ejaculate volume averaged 5.73+or-0.04 ml, sperm concentration 9.133+or-0.084 x 108/ml and the sperm motility index 62.81+or-0.18. Least-squares means for the traits are tabulated in respect of age of bulls, each month of the year, collection intervals (2-4, 5-7 and 8-15 days), and for the 1st and 2nd ejaculates of a collection.

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