Table 1. Information regarding experiment group (n = 46)

Group	Number of cows	Age of months	Parity	Days of pregnancy
Non-pregnant cows	28	51.2 ± 4.0	1.8 ± 0.1	173.6 ± 3.7
Pregnant cows	18	47.0 ± 3.5	1.6 ± 0.2
Total	46	49.7 ± 2.9	1.7 ± 0.1