Table 1 Descriptive statistics of the data

Number of records

30 640

54 744

83 053

Number of dams

30 640

51 658

79 967

Number of dams with own birth record¹

2 411

10 899

13 310

Number of sires

2 012

1 918

2 827

Number of maternal grandsires

4 783

5 886

8 291

Female calves

67.12%

46.08%

54.6%

Male calves

32.88%

53.92%

46.4%

CE, frequency^2,3

71.67%

83.12%

79.03%

24.33%

14.99%

18.54%

3.33%

1.51%

2.20%

0.67%

0.38%

0.50%

GL (days), mean ± s.e.³

280.69 ±4.97

281.35 ± 4.89

281.17 ± 4.93

SB, frequency³

11.6%

4.3%

6.0%