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Variability and heritability of reproductive traits of Carpathian Brown bulls

Variability and heritability of reproductive traits of Carpathian Brown bulls

Zhivotnovodstvo (5): 54-55

An analysis was carried out on data recorded in 1962-80 on 290 Carpathian Brown bulls. Ejaculate volume increased from 3.43 plus or minus 0.10 ml for bulls aged less than or equal to 24 months to 6.63 plus or minus 0.40 ml for those aged more than or equal to 145 months. Sperm concentration was highest (1.06 plus or minus 0.02 milliard/ml) at 85-96 months, and sperm number per ejaculate was highest (6.13 plus or minus 0.29 milliard) at 109-120 months. There was no consistent age trend for CR.

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