Table 2 Pregnancy rates (%) after fixed-time artificial insemination in different parity * interval from calving to entering the program groups.

50-70

71-100

101-

Total

Parity

   0

43.8 (16)

   1

83.3 (6)

56.0 (25)

16.7 (6)

54.1 (37)

   2-5

100.0 (9)

49.0 (49)

55.6.(9)

56.7 (67)

   6-

0.0 (3)

33.3 (6)

0.0 (1)

20.0 (10)

   Total

77.7 (18)

50.0 (80)

37.5 (16)