Table 1 Mean (± SD) of the corpus luteum diameter, uterine cross-section, embryo and amniotic sac length at the beginning of pregnancy in sheep (n = 16)

17–24

13.98 ± 1.83^A

11.29 ± 2.82^A

2.67 ± 0.67^A

–

25–32

13.21 ± 1.61^A

25.35 ± 3.00^B

7.16 ± 8.61^B

20.83 ± 0.47^A

33–40

12.99 ± 0.56^A

40.21 ± 7.94^C

26.50 ± 6.05^C

30.50 ± 6.42^B

41–48

13.02 ± 1.26^A

50.53 ± 3.58^D

37.35 ± 4.16^D

39.90 ± 4.61^C

49–56

13.67 ± 1.01^A

–

–

–

57–64

8.87 ± 1.00^B

–

–

–