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10 531 ejaculates, collected over a 3-yr period from 233 German Black Pied AI bulls, were examined. The effects of age of bull, month of collection, weather conditions and duration of sexual rest on semen characters were investigated, and results are presented diagrammatically. The only...

Boehnke, H. J.; Schluter, U.; Marre, H.; Pfeilsticker, J.
Deutsche Tierarztliche Wochenschrift, 1978, 85, 5, pp 160-164