The Use Of Ultrasonography To Detect The Response Of Local Awassi Ewes To Synchronization Of Estrous And Superovulation To Different Intravaginal Progestagen sponge And eCG K. A. Hussein , S.N. Omran ,H.M. AL-Rawi

Abstract

The aim of this study was to induction of estrous synchronization and
supper ovulation by using intravaginal sponges and injection of different time
and dose of eCG and count the number of corpora lutea and nonovulated
vesicles by using 5MHz ultrasonography in local Awassi ewes
This study were included forty Awassi ewes aged about (3-5) years and 5
rams of same breeds. These ewes allotted randomly into five groups (8 ewes for
each group). Ewes of the first four groups were treated with progesterone
hormone by using intra vaginal sponges. Saturated with 40 mg of flourogeston
Acetate (FGA) for 14 days, while the fifth group was used as a control not
treated with any hormone. Ewes of group 1 and 2 were injected with 500 and
750 I.U of eCG. I.M subsequently at time of sponges removal, while ewes of
groups 3 and 4 were injected with 500 and 750 I.U of eCG I.M subsequently
before 48 hrs from sponges removal. The results of the present study showed
that significant difference (P<0.05) in mean of time of estrus after removed of
sponges. The results also showed significant differences (P<0.05) in the length
of mean of estrus phase between four treated groups. Also the results showed
that the injection of different time were lead to increase in mean of corpora lutial
number in treated groups, and there was significant difference (P<0.05) in
ovulation rate.