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Register a new userEfficiency of Hormonal Treatment in Synchronizing Estrus and Increasing Lambing Rate in Awassi Yearlings
تأثير المعاملة الهرمونية في توقيت الشِياع و زيادة معدل الولادات في حوليات غَنم العواس
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سليمان سْلهب( باحث )
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استخدم ٣٠٠ رأسٍ من حوليات غنم العواس ( 18-19 شهرا) بمتوسط وزن 40+-1 كغ, و مضى لى ولادتها الأولى ٢,٥-٣ أشهر لمعرفة مدى فعالية المعاملة بالإسفنجات المهبلية (MAP) دون هرمون PMSG أو معه، في توقيت الشياع و زيادة نسبة الولادات ضمن برنامج الحصول على ولادتين في العام الواحد تقريبًا و رفع الكفاءة التناسلية في غنم العواس.
Three hundreds- Awassi yearlings, ١٨-١٩ months old, ٤٠ ± ١ kg weight, ٢,٥-٣ months post first lambing, were used to study the efficiency of hormonal treatment in synchronizing estrus and increasing lambing rate with a program of having two lambs per year. Ewes were randomly and equally divided into three groups.
References used
أكساد. ١٩٩٦ . التقرير الفني السنوي. إدارة دراسات الثروة الحيوانية، أكساد /ث ح/ ت س ٢٥ / دمشق سورية
المنظمة العربية للتنمية الزراعية. ١٩٩٥ . الكتاب السنوي للإحصاءات الزراعية العربية، المجلد ( ١٥ )الخرطوم.
عبد اللطيف، ج.ع. ١٩٨٦ . أثر المعاملات الهرمونية في الأداء التناسلي في النعاج العراقية. رسالة ماجستير، كلية الزراعة، جامعة بغداد
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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
١٢٠ -Awassi ewes, ٣٦ ± ٢,٠ mos. old, ٤٢,٥ ± ٢,٥ kg. weight were used to
know the efficiency of artificial insemination (AI) in reproductive performance
of hormonal treated Awassi ewes in breeding season.
This study was conducted in Ber Al-Ajam village, on a private farm, with a
group of Awassi sheep (76 ewes) in 2004-2005. A group of 57 lambs were
selected out of single born lambs and divided into two groups according to sex.
Each group was divide
d randomly into sub groups: control and experimental.
At the beginning of the experiment, at three weeks age, there were no
significant differences between the groups of lambs (p > 0.05).
The aim of this investigation is to preserve fresh Awassi lamb meat at
different storage conditions.
The Awassi lamb from the thigh part of fresh meat was stored in
Vacuuming Polyethylene Packaged with 100% CO2, 100% N2 and
100% vacuuming and at
temperature +3 ºC and +7 ºC.
The study showed that the meat can be stored at temperature +3ºC between
20 -30 days for the CO2 and vacuuming, and between 10-20 days for the N2 .
The study also indicated that the meat can be stored at temperature +7 ºC
between 10-20 days for CO2, and for 10 days under N2, and up to 10 days for
the vacuuming without altering the organoleptic properties.
أجريت تجربتان خارج وضمن موسم الشبق على نعاج العواس تحت ظروف التربية المسرحية بمحافظة دير الزور بهدف اختبار المعاملات الهرمونية المختلفة في نتائج الكفاءة التناسلية
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