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Register a new userتقويم برنامج التحسين الوراثي لأغنام العواس لصفتي وزن ومعدل المواليد تحت ظروف مركز القامشلي للبحوث العلمية الزراعية
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جامعة الفرات رسالة ماجستير
Publication date
2014
fields
Agricultural Engineering
and research's language is
العربية
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تقويم برنامج التحسين الوراثي لأغنام العواس لصفتي وزن ومعدل المواليد تحت ظروف مركز القامشلي للبحوث العلمية الزراعية
No English abstract
References used
طليمات , فرحان منير 1996 . موسوعة عروق الاغنام العربية ( اكساد )/ ث ح / ن 155 - دمشق
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A study conducted at Marj Al Kareem (The Scientific Agricultural Centre
for Researches) in cooperation with Damascus University Faculty of
Agriculture, The target group was Awassi sheep; about 323 ewes, 30 rams of
the age "3-4 years", 424 lambs fo
rm the age 1 day to 5 months during the
season 2002-2003. The animals have been put under the same nutritional and
environmental conditions, and the same health care program.
The objective of this study was to compare the effect of using intravaginal sponges with intramuscular (IM) injection of prostaglandin hormone within the reproductive season and their effect on Lambing rate and birth rate in Awassi ewes. Thirty ewes
were equally divided into two groups (G1 and G2). Intravaginal sponges impregnated with 60 mg of Medroxy
Progesterone Acetate (MAP) were inserted into the ewes of the first group for 14 days, and were injected at the time of the withdrawal of sponges with 500 IU of equine Chorionic Gonadotrophin (eCG) at the first group ewes (G1). The ewes in second group (G2) were
injected with double dose of 125 μg of prostaglandin (PGF2α) intramuscularly (IM) at 9 days apart. The ewes were naturally mated with fertile rams (ram / 5 ewes). The results showed that there were significant differences between groups (G1 and G2) in the Lambing rate (93.33% vs. 73.33%). The ewes of group (G1) outperformed the ewes of group (G2) in the
percentage of twin births (42.86% vs. 18.18%), and the birth rate (1.43 vs. 1.18) with significant differences (P<0.05). We conclude from the study that treating ewes by using intravaginal sponges with eCG injection was better than the method of prostaglandin
injection in raising the Lambing rate and birth rate in Syrian Awassi ewes, within the local Syrian conditions
Milk production and composition were studied on (٣٠) yearlings of
improved Awassi sheep during their first lactation, from ١٩٩٧ to ١٩٩٨ at the
Faculty of Agriculture, Damascus University.
At the beginning of experiment the animals were ١٤ to ١٦,٥ months old and
their body weight was ٤١,٥ kg.
نفذت هذه الدراسة الحقلية بالتعاون بين كلية الزراعة في جامعة دمشق والهيئة العامة للبحوث العلمية الرزاعية في سورية
أجريت هذه الدراسة على (93) نعجة من سلالة أغنام العواس المرباة في محطة بحوث الشولا للإنتاج الحيواني بمحافظة دير الزور التابع للهيئة العامة للبحوث العلمية الزراعية
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