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Register a new userEfficiency of Artificial Insemination in Reproductive Performance of Hormonal Treated Awassi Ewes in Breeding Season
فعالية التلقيح الاصطناعي في الأداء التناسلي في نعاج العواس المعاملة هرمونيًا داخل الفصل التناسلي
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استخدم ١٢٠ رأسًا من نعاج العواس بعمر ٣٦ ± ٢ شهرًا و بمتوسط وزن قدره ٤٢,٥ ± 2,5 كغ لمعرفة مدى فعالية التلقيح الاصطناعي في الأداء التناسلي لنعاج العواس المعاملة هرمونيًا داخل الفصل التناسلي و انعكاس ذلك على إنتاجية النعجة من اللحم.
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.
References used
المنظمة العربية للتنمية الزراعية. ١٩٩٥ . الكتاب السنوي للإحصاءات السنوية العربية، المجلد ١٥ الخرطوم.
المرستاني، م.ر ١٩٩٨ . تحريض الشبق في غنم العواس السورية. أسبوع العلم ٣٨ ، جامعة البعث، سورية.
طليمات، ف. ١٩٩٦ . موسوعة عروق الأغنام العربية. أكساد/ث ح/ت ١٥٥ . دمشق، سورية.
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Data on ١٦٠١ records over five years were used to study the reproductive
and productive performance of Awassi ewes kept at the animal husbandry
station (Darnajookh) in Iraq.
The overall means were ٨٠,٦٩±١,١٪, ١,٠٧٧±٠,٠٠٨, ٩٢,٨٢±٠,٨٣٪,
٠,٨٠٥±٠,٠١٤
, ١٨,٩٨±٠,٣٥ kg, ٥٣,٣٨±٠,٣٢ kg and ٢٢,٥١±٠,١٨ kg for
fertility, litter size, pre-weaning survival rate, number of lambs weaned per
ewe exposed to the rams, ewe productivity ( total weight of lambs weaned
per ewe exposed to the rams), body weight of ewe at breeding and weaning
weight of lambs, respectively.
The objective of this study was to compare between two methods of estrus synchronization (progesterone-impregnated intravaginal sponges and intramuscular (IM) injection of prostaglandin hormone) within the reproductive season and their effect on some
reproductive parameters in Awassi ewes. Thirty ewes were equally divided into two groups (G1 and G2). Intravaginal sponges impregnated with 60 mg of Medroxy Acetate Progesterone (MAP) were inserted into the ewes of the first group for 14 d, 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 animals in second group (G2) were injected with double dose of 125μg 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 no significant differences between groups (G1 and G2) in the estrus response (100% and 86.67%, respectively), while there were significant differences in the average time to onset of estrus (38.8 ± 4.45 h and 53.07 ± 4.13 h) and the average duration of estrus (33.20 ± 3.09 h and 28.61 ± 3.59 h, respectively). Also, the pregnancy rate was significant difference (P<0.05) in group G1 compared to group G2 (93.33% vs. 73.33%). we conclude from the study that the estrus synchronization using intravaginal sponges is an effective method to achieve good reproductive performance ewes and get a high estrus rate and high pregnancy rate, compared to the injection of the hormone prostaglandin in Awassi ewes, within the local Syrian conditions.
This research was done as a collaboration work between Tishreen University and the
General Commission for Scientific Agricultural Research in Karahta research station for
improvement of Shami goats and Der Al-Hajar station to set tables for normal
values of
some blood and chemical parameters in Awassi sheep during pregnancy to predict any
nutrition or health disorders. Forty seven Awassi ewes in the same age (in the third season)
were used for that purpose. Blood sample were collected from all ewes every month of the
pregnancy period. Thealanine aminotransferase (ALT),the aspartate aminotransferase
(AST), the alkaline phosphatase (ALP), the glucose (Glu) were analyzed.
Results indicated the existence of significant changes (P<0.05) between the
increase and decrease in all indicators studied throughout The study period, which shows
the change in functional status of liver in conjunction with stage of pregnancy.The overall
average of the effectiveness of enzymes (2.05-26.47), (32.65-181.40) and (11.17-79.76)
U/l for each of the ALP, ALT and AST, respectively, and total concentration of glucose
(37,50-95.20 mg/dl) throughout the study period.
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 p
er year. Ewes were randomly and equally divided into
three groups.
This research was conducted to apply the technique of Artificial Insemination in
poultry for the first time in the Syrian Arab Republic , and study the differences between
the impact of the use of fresh or stored semen on the fertilization rate in
hatching eggs .
Results showed that the response to massage was different between cocks, It was greater in
the cock A and cock B while the cock C was the least response to massage. The greater
volume of ejaculate was obtained from the cock A( 0.072) ml ,and the least volume of
ejaculate was obtained from the cock B (0.05) ml . The volume of ejaculate obtained from
the three cocks was ranged between (0.049 -0.072) ml. The value of X in the count ranged
between (230 - 237) sperm, semen concentration ranged between (4.6 - 4.7) billion sperm /
ml. It also found that Insemination with a fresh semen injection yielded fertilization rate
(91%), While insemination with semen injection cooling at the heat +4 ̊ C for 48 hours
yielded fertilization rate (67%) .
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