Table 4 Umbilical arteries diameter and blood flow in jennies at different ages. Data are obtained as mean ± SEM

Umb A. Cross sectional D(mm)

Number

22

20

22

Mean ± SEM

13.02 ± 0.33^A

13.66 ± 0.52^AB

14.37 ± 0.21^B

Umb A. PI

Number

22

20

22

Mean ± SEM

1.59 ± 0.01^A

1.61 ± 0.01^A

1.46 ± 0.01^B

Umb A. RI

Number

22

20

22

Mean ± SEM

0.67 ± 0.01^A

0.68 ± 0.01^A

0.51 ± 0.02^B

Umb A. rate

Number

22

20

22

Mean ± SEM

64.71 ± 1.22

68.22 ± 0.22

70.81 ± 0.88