Table 5 Umbilical arteries diameter and blood flow in jennies at different gestational months. Data are obtained as mean ± SEM

Umb A. Cross sectional D

Number

18

17

22

20

19

Mean ± SEM

12.02 ± 0.01^A

12.65 ± 0.01^AB

13.02 ± 0.01^B

14.05 ± 0.01^C

14.11 ± 0.01^C

Umb A. PI

Number

18

17

22

20

19

Mean ± SEM

1.54 ± 0.01^A

1.21 ± 0.01^AB

1.11 ± 0.02^B

1.01 ± 0.01^B

0.98 ± 0.01^B

Umb A. RI

Number

18

17

22

20

19

Mean ± SEM

0.77 ± 0.01^A

0.71 ± 0.01^AB

0.62 ± 0.01^B

0.60 ± 0.01^B

0.61 ± 0.02^B

Umb A. rate

Number

18

17

22

20

19

Mean ± SEM

55.31 ± 0.58^A

59.20 ± 2.32^AB

61.33 ± 2.22^AB

65.24 ± 0.66^B

66.25 ± 0.99^B