Journals / Kafkas Üniversitesi Veteriner Fakültesi Dergisi / 2013 / Cilt: 19 - Sayı: 4

Aşım Mevsimindeki yağlı kuyruklı koyunlarda FGA ve Ovsynch temelli senkronizasyon protokollerinin üreme performansı üzerine etkileri

Effects of FGA sponge and ovsynch based protocols on reproductive performance of fat-tailed ewes during the breeding season

Pages
629–633
DOI
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⚡ TL;DR(Too Long; Didn't Read)

The results showed that; time to onset of oestrus (P<0.001), duration of oestrus (P<0.05), the rates of pregnancy (P<0.01) and lambing (P&#8804;0.001) differed between the synchronisation groups.

📌 3 Key Takeaways

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Objective & Hypothesis:The effects of different synchronisation prototocols on the reproductive parameters of fat-tailed ewes during the breeding season were studied herein.
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Key Findings & Data:Seventy-one multiparous fat-tailed ewes were randomly divided into four treatment groups, as follows; Group 1 (long-term FGA): for a total of 20 ewes, 20 mg FGA sponges inserted intravaginally for 14 d, plus an i.m. injection of 400 IU PMSG upon the sponge withdrawal, Group 2 (short-term FGA): for 18 ewes, the insertion of sponges for 8 d, plus the PMSG injection on day 8 upon the sponge withdrawal, Group 3 (Ovsynch): for 17 ewes, an i.m. injection of 0.004 mg GnRH on day zero, followed by the injection of 125 &#956;g PGF2&#945; on day 7 and the second GnRH injection on day 9, and Group 4 (short-term FGA plus Ovsynch): for 16 ewes, the FGA sponge inserted along with the first GnRH injection (as day zero), PGF2&#945; injection on day 7 upon the sponge withdrawal, and the second GnRH injection on day 9.
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Conclusion & Impact:The results showed that; time to onset of oestrus (P<0.001), duration of oestrus (P<0.05), the rates of pregnancy (P<0.01) and lambing (P&#8804;0.001) differed between the synchronisation groups.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

The effects of different synchronisation prototocols on the reproductive parameters of fat-tailed ewes during the breeding season were studied herein. Seventy-one multiparous fat-tailed ewes were randomly divided into four treatment groups, as follows; Group 1 (long-term FGA): for a total of 20 ewes, 20 mg FGA sponges inserted intravaginally for 14 d, plus an i.m. injection of 400 IU PMSG upon the sponge withdrawal, Group 2 (short-term FGA): for 18 ewes, the insertion of sponges for 8 d, plus the PMSG injection on day 8 upon the sponge withdrawal, Group 3 (Ovsynch): for 17 ewes, an i.m. injection of 0.004 mg GnRH on day zero, followed by the injection of 125 &#956;g PGF2&#945; on day 7 and the second GnRH injection on day 9, and Group 4 (short-term FGA plus Ovsynch): for 16 ewes, the FGA sponge inserted along with the first GnRH injection (as day zero), PGF2&#945; injection on day 7 upon the sponge withdrawal, and the second GnRH injection on day 9. The results showed that; time to onset of oestrus (P<0.001), duration of oestrus (P<0.05), the rates of pregnancy (P<0.01) and lambing (P&#8804;0.001) differed between the synchronisation groups. Overall, findings of onset/duration of oestrus and pregnancy/lambing rates suggest that; the standard Ovsynch synchronisation programme was markedly inferior to the long- and short-term FGA sponge protocols in fat-tailed ewes during the breeding season.

Özet

Sunulan çalışmada, aşım sezonundaki yağlı-kuyruklu koyunlarda farklı senkronizasyon protokollerinin reprodüktif parametreler üzerine etkileri araştırıldı. Bu amaçla, toplam 71 baş birden fazla doğum yapmış yağlı-kuyruklu koyun rasgele 4 deneme grubuna ayrıldı: Birinci gruptaki koyunlara (n=20, uzun süreli FGA), 20 mg FGA içeren süngerler intravaginal olarak yerleştirildikten sonraki 14. günde uzaklaştırılarak, 400 IU PMSG intramuskuler olarak enjekte edildi. İkinci gruptaki koyunlara (n=18, kısa-süreli FGA), 20 mg FGA içeren süngerler intravaginal olarak yerleştirildikten sonraki 8. günde uzaklaştırılarak, 400 IU PMSG intramuskuler olarak enjekte edildi. Üçüncü gruptaki koyunlara (n=17, Ovsynch grubu), Ovsynch protokolü (0. günde 0.004 mg GnRH, 7. günde 125 μg PGF2α ve 9. günde 0.004 mg GnRH) uygulandı. Dördüncü gruptaki koyunlara (n=16; kısa-süreli FGA + Ovsynch) ise, 20 mg FGA içeren süngerlerin intravaginal olarak yerleştirilmesiyle birlikte 0.004 mg GnRH enjekte edildi. Süngerlerin 7 gün sonra uzaklaştırılmasını takiben 125 μg PGF2α ve 9. günde 0.004 mg GnRH uygulandı. Senkronizasyon grupları arasında, son uygulama-östrus aralığı (P<0.001), östrus süresi (P<0.05), gebelik (P<0.01) ve doğum oranları (P≤0.001) açısından önemli farklar olduğu gözlendi. Sonuç olarak; standart Ovsynch protokolünün, üreme sezonundaki yağlı-kuyruklu koyunlarda klasik kısa ve uzun süreli FGA içeren vajinal sünger uygulamalarına göre gebelik ve doğum oranlarında önemli ölçüde azalmaya yol açtığı kanısına varıldı.

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Cite This Article

KULAKSIZ, R., UÇAR, Ö., DASKIN, A. (2013). Aşım Mevsimindeki yağlı kuyruklı koyunlarda FGA ve Ovsynch temelli senkronizasyon protokollerinin üreme performansı üzerine etkileri. Kafkas Üniversitesi Veteriner Fakültesi Dergisi, Cilt: 19 - Sayı: 4, 629–633. https://ajindex.com/articles/272810

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