Browsing by Author "Kuru, Mushap"

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Effect of Barium Selenate Injections on Fertility of Pirlak Ewes Subjected To Estrus Synchronization During Non-Breeding Season
(Polish Soc veterinary Sciences Editorial office, 2017) Kuru, Mushap; Sogukpinar, Osman; Makav, Mustafa; Cetin, Nebi
This study was aimed at determining the effect of barium selenate injections on the fertility of Pirlak ewes which had been subjected to progesterone-assisted estrus synchronization during the non-breeding season. A total of 150 Pirlak ewes between the ages of 2 and 5 years were used in the study. Sponges containing progesterone were inserted into the vaginas of the ewes for 11 (groups I and III) or 14 days (groups II and IV) for the purpose of estrus synchronization, and 500 IU equine chorionic gonadotropin (eCG) was administered on the day of sponge removal. In addition, barium selenate was injected s.c. immediately before estrus synchronization protocol in groups I and III. After the sponges had been removed, estrus was observed for four days. The ewes were mated with fertile rams. The pregnancy was determined by transrectal ultrasonography 30 days after mating. It was observed that the estrus rate, pregnancy rate, conception rate, lambing rate, twinning rate, and litter size were not statistically different (P > 0.05) between the groups, but estrus onset was different (P < 0.001). In conclusion, barium selenate injections did not affect the fertility parameters before progesterone-assisted synchronization was applied to the Pirlak ewes during the non-breeding season.
The Effect of Hcg Administration on Reproductive Performance in Undernourished Lactating Hair Goats Synchronized During Non-Breeding Season
(veterinarni A Farmaceuticka Univerzita Brno, 2024) Cetin, Nebi; Kosal, Volkan; Kuru, Mushap; Oner, Ahmet Cihat; Eski, Funda
This study aimed to assess the effects of short and long synchronization protocols, combined with post-synchronization human chorionic gonadotropin (hCG) administration, on the reproductive performance of lactating hair goats during the non-breeding season, considering their inadequate pasture conditions. A total of 60 goats were randomly divided into four groups used for 5 days in G1 and G2 and 12 days in G3 and G4. All received a 500 IU pregnant mare's serum gonadotropin (PMSG) injection 48 h before sponge removal and were exposed to bucks 12 h later. Groups G2 and G4 received a 500 IU hCG injection on the eighth day after mating. Groups G1 and G3 did not receive any application after mating. Blood samples were collected on the 8th, 15th, and 22nd days for post-mating progesterone analysis, and pregnancy examinations were performed on the 35th day. The study showed a 90% total oestrus rate (54/60). However, there were no significant differences in conception, pregnancy, and kidding rates among the groups. Serum progesterone concentrations significantly increased on the 15th day in G2 and G4, where hCG was administered. In summary, hCG raised progesterone levels but did not significantly affect the reproductive performance of undernourished, lactating goats in a nonbreeding season, suggesting that environmental factors and animal nutrition play a crucial role in synchronization outcomes.
Effect of Oestrus Synchronization With Different Lengths of Progesterone-Impregnated Sponges and Equine Chorionic Gonadotropin on Reproductive Efficiency in Romanov Ewes During the Non-Breeding Season
(veterinarni A Farmaceuticka Univerzita Brno, 2022) Kuru, Mushap; Kuru, Buket Boga; Kacar, Cihan; Demir, Murat Can; Cetin, Nebi
This study aimed to determine the effects of different lengths of progesterone and equine chorionic gonadotropin (eCG) treatment on reproductive performance during the non-breeding season in ewes. Progesterone-impregnated sponges were inserted intravaginally for 7 d in Group 1 (G1, n = 24), 9 d in Group 2 (G2, n = 25), and 11 d in Group 3 (G3, n = 24). On the day of sponge removal, eCG (350 IU) was injected and 24 h later the ewes were exposed to rams. Pregnancy was diagnosed by transrectal ultrasonography 30 ?? 3 d after mating. Oestrus symptoms of G2 and G3 started earlier than G1, but there was only a significant difference between G1 and G3 (P = 0.013). In G1, G2, and G3, the oestrus responses were 100%, 100%, and 95.8%, pregnancy rates were 79.2%, 72%, and 75%, lambing rates were 79.8%, 72%, and 75%, litter sizes were 2.5, 2.2, and 2.4, and multiple birth rates were 86.7%, 80%, and 85.7%, respectively (P > 0.05). In conclusion, the short-term progesterone-impregnated sponge and eCG treatment provided excellent oestrus induction. The effects of different days (7, 9, or 11) of progesterone treatment on reproductive indicators were similar; therefore, the stress caused by the inserted sponge can be reduced by short-term use.
Effect of Two Prostaglandin F2α Injections Administered 24 Hours Apart on the Pregnancy Rate of Simmental Cows Subjected To the Ovsynch or Ovsynch Plus Controlled Internal Drug Release (Cidr) Protocols
(Polish Soc veterinary Sciences Editorial office, 2020) Kuru, Mushap; Kacar, Cihan; Oral, Hasan; Kaya, Semra; Cetin, Nebi; Kaya, Duygu; Demir, Murat Can
The aim of the present study was to determine the effects of one or two doses of prostaglandin F2 alpha (PGF) on the pregnancy rate (PR) in Simmental cows subjected to the Ovsynch or Ovsynch + Controlled internal drug release (CIDR) protocols. On d 0, 100 mu g gonadorelin diacetate tetrahydrate (GnRH) was injected into cows in group 1 (n = 50) and group 2 (n = 40) and CIDR was intravaginally inserted. On d 7, 25 mg dinoprost tromethamine (PGF2 alpha, PGF) was administered, and GnRH was injected 56 h later. Fixed-time artificial insemination (TAI) was performed 16 h after GnRH injection. In group 3 (n = 62) and group 4 (n = 63), PGF was administered 7 d following Gn RH treatment, and GnRH was injected 56 h later. TAI was performed 16 h after Gn RH injection. In groups 2 and 4, a second dose of PGF was injected 24 h after the first dose. Pregnancy was determined by transrectal ultrasonography on d 30 and 60 post-TAI. The pregnancy rate (PR) on d 30 post-TAI was significantly different among the groups: 46%, 55%, 29%, and 36.5%, in groups 1, 2, 3, and 4, respectively (P = 0.048). In addition, the PR was 36.3% and 43.7% in the single PGF and double PGF injection groups, respectively. There was no statistical difference in the PR on d 60 post-TAI (P > 0.05). Pregnancy loss was between 4.34% and 11.11% (P > 0.05). The highest PR in the prim iparous cows was observed in group 3 (57.7%). The PR was not significantly different among multiparous cows (P> 0.05). In conclusion, two injections of PGF administered 24 h apart in Simmental cows may increase the PR in the Ovsynch or Ovsynch + CIDR protocols.
Üreme Sezonunda Oral Progestagen Uygulamasının Senkronize Keçilerin Fertilitesi Üzerine Etkileri
(2024) Çetin, Nebi; Kuru, Mushap; Koca, Davut; Eski, Funda; Uslu, Barış Atalay; Şendağ, Sait; Wehrend, Axel
Bu çalışmanın amacı, üreme mevsiminde senkronize edilen keçilerde çiftleşmeden sonra uygulanan oral progesteronun (altrenogest) fertilite üzerindeki etkisini değerlendirmektir. Çalışmada, toplam 47 Kıl keçisi kullanıldı. Hayvanlara 12 gün boyunca progesteron emdirilmiş intravajinal süngerler uygulandı. Vajinal sünger uygulamasının 10. gününde 480 IU PMSG ve 0.075 mg kloprostenol intramüsküler olarak uygulandı. Östrüsdeki hayvanlar, arama tekesi ile tespit edildikten sonra 12 saat tekelere maruz bırakıldı. Keçiler rastgele iki ayrı gruba ayrıldı: Grup 1 (G1, n=23) ve Grup 2 (G2, n=24). G1 keçilerine çiftleşmeden sonraki 30 gün boyunca günde 4.4 mg altrenogest oral olarak uygulandı. G2 keçileri ise kontrol grubu olarak değerlendirildi. Gebelik muayeneleri çiftleşmeden sonraki 30. ve 42. günlerde transrektal ultrasonografi ile yapıldı. Kan örnekleri çiftleşmeden sonraki günden 30 güne kadar (3 günlük aralıklarla) alındı. G1 ve G2 arasında istatistiksel analiz, progesteron konsantrasyonları, konsepsiyon oranı, gebelik oranı, kuzulama oranı, çoklu doğum oranı, fekundite ve bir batındaki yavru sayısı açısından gruplar arasında anlamlı bir fark olmadığını ortaya çıkardı (p>0.05). Sonuç olarak, bu çalışmada oral progesteron kullanımının fertilite parametreleri üzerine herhangi bir etkisinin olmadığı tespit edildi. Ayrıca, çeşitli oral progesteron analoglarının etkinliğini araştırmak için daha fazla araştırmaya ihtiyaç vardır.