Abstract:
This study was carried out at River Nile State, in a
well constructed Jordanian sheep raising scheme, during period
extended from November 2006 to April 2007, to study the effect
of synchronization and flushing, on some reproductive traits of
Sudanese desert ewes . Sixty mature ewes were chosen and
divided ( grouped ) in three groups , group ( A ) as the control ,
group (B) include the synchronized ewes with progesterone plus
pregnant mare serum gonadotrophin ( PMSG) and group (C)
Include the flushed –synchronized ewes with progesterone plus
pregnant mare serum gonadotrophin ( PMSG) . Six rams were
selected, after passing the male score test as teasers.
All animal , in all groups were fed sorghum straws
and barseem. Animals in group ( C) were fed concentrated
ration for flushing . After onset of heat, the rams were
introduced for mating. Then oestrus induction rate, conception
rate, lambing rate, multiple-birth rate, average birth-weight and
gestation length were recorded. The data obtained was analyzed
and tabulated using analysis of variance (ANOVA) and t test .
The results revealed that , ewes from the two treated
groups , synchronized group ( B) and flushed synchronized
group (C), compared to the control group (A) showed a
significant difference (p<0.05) for conception rate, lambing rate,
multiple-birth rate respectively. but no difference in the
gestation period was designated among all the experimental
animals.
iv
This study concluded, that, using of flushing and
synchronization programmes, have a positive effects on
reproductive traits of Sudan desert ewes .
