Genetic parameters of heifer fertility measures were estimated. Data were records of 42 283 first-parity Black-and-White cows. The percentage of cows that did not repeat heat was 73 at the 56^th day and 69 at the 72^nd day after first insemination. Heritabilities of non-return rates to the 56^th day and 72^nd day were 0.012 and 0.010, respectively. Heritabilities of age at first insemination, age at conception and age at calving were 0.324, 0.312 and 0.296, respectively. Phenotypic correlations ranged from 0.78 between age at first service and age at conception to 0.98 between age at conception and age at calving. The genetic correlations were high (0.96 and higher). Genetic correlations between non-return rates and the remaining traits ranged from -0.11 to 0.10.