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\hypersetup{pdftitle={Successful Superovulation and Non"=surgical Embryo Collection in Sinai Goats},pdfauthor={Moataz El-Gayar, Mohammed Yaseen, Mohammed Shehab-El-Deen, Reda Khalifa},pdfsubject={Tropentag 2010: Abstract},pdfkeywords={Embryos, GnRH, Sinai goat, superovulation},pdfpagemode=None,colorlinks=true}
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\parbox[b]{13.4cm}{\centering \large{\textbf{Tropentag, September 14-16, 2010, Zurich}}\\[1ex] \Large{``World Food System  ---\\A Contribution from Europe''\\[2ex]}}
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\begin{center}
\Large{\textbf{Successful Superovulation and Non"=surgical Embryo Collection in Sinai Goats\footnote{\textbf{Contact Address:} Moataz El-Gayar, Suez Canal University, Faculty of Agriculture, Department of Animal Production, 41522~Ismailia, Egypt, \mbox{e-mail}: \email{melgayar@yahoo.com}}\\[0.8ex]}}
\normalsize{\textsc{Moataz El-Gayar, Mohammed Yaseen, Mohammed Shehab-El-Deen, Reda Khalifa}}
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\begin{itemize*}
\item[]{\small{\textit{Suez Canal University, Faculty of Agriculture, Department of Animal Production, Egypt}}}
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\index[author]{El-Gayar, Moataz}
\index[author]{Yaseen, Mohammed}
\index[author]{Shehab-El-Deen, Mohammed}
\index[author]{Khalifa, Reda}
\begin{center}
\vspace{1.1cm}
\textbf{Abstract}
\begin{abstract}
\normalsize{
Sinai goats are adapted to arid and harsh environment. There is a paucity of scientific knowledge on Sinai goats. In order to provide some information on the reproductive performance of Sinai does, twenty parous Sinai does, aged 3--4 years and weighing 20--\mbox{26\,kg}, were synchronised for estrus using intravaginal sponges and superovulated with eCG (equine Chorionic Gonadotropin). Does were then divided to two equal parts, ten in each. The first part was treated by GnRH (Gonadotropin Releasing Hormone). By way of comparison, the other ten does were administrated with hCG (human Chorionic Gonadotropin). Animals showed estrus were mated with fertile bucks as long as females permitted the male to mount.  Seven days after the last mating, embryos were collected transcervically by a non"=surgical  method. Does superovulated with eCG + hCG showed the onset of estrus at time later than the  does superovulated with eCG + GnRH (49 vs 43 h). However, this difference was not  significant. Does superovulated with eCG + hCG showed a slightly shorter interval between  onset and the end of estrus (28 vs 29 h). Although all superovulated does showed estrus, only \mbox{70\,\%} of does produced embryos. The proportion was higher (\mbox{80\,\%}) in does superovulated with  eCG + GnRH. Ultrasonography examinations showed that although the mean number of  follicles more than 5 mm in diameter was higher in does superovulated with eCG + hCG   (14.7 vs 13.5), the mean number of ovulations was slightly higher in does superovulated with  eCG + GnRH (8.6 vs 8.3). These differences were not significant. The mean number of  embryos recovered and the mean number of transferable embryos tended to be higher in the  does superovulated with eCG + GnRH compared to the does superovulated with eCG + hCG   (6.5 vs 4.9 and 3.9 vs 3.4, respectively). This leads to the conclusion that Sinai goats could be  superovulated with eCG and are able to provide embryos of good quality using non"=surgical  collection. }

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\end{abstract}
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\noindent \textbf{Keywords:} Embryos, GnRH, Sinai goat, superovulation
\index[key]{Embryos}
\index[key]{GnRH}
\index[key]{Sinai goat}
\index[key]{Superovulation}
\end{document}