CİHAN KAÇAR, SAVAŞ YILDIZ, ŞÜKRÜ METİN PANCARCI, MEHMET KAYA, Örsan GÜNGÖR, UMUT ÇAĞIN ARI

Effect of administration of lesireline five days after artificial insemination on pregnancy rates and luteal function in cows

Bu çalışmada, ineklerde suni tohumlamadan 5 gün sonra lesireline uygulaması yapılarak gebelik oranının arttırılması amaçlandı. Suni tohumlamadan sonraki 5. günde Grup I (n:29) lesireline ml, Grup II (n:27) ise 2 ml fizyolojik NaCl çözeltisi intramuskuler yolla uygulandı. İneklerden tohumlama gününden (0. gün) itibaren, 5, 10 ve 20. günlerde kan alınarak serum progesteron değerleri belirlendi. Gebelik muayeneleri tohumlamayı izleyen 60. günde rektal palpasyon ile yapıldı. Gebelik oranları lesireline grubunda %24.1, kontrol grubunda ise %22.2 olarak tespit edildi. Gruplar arasında gebelik oranı bakımından istatistiksel yönden önemli bir fark saptanmadı (p>0.05). Suni tohumlamadan 10 gün sonra serum progesteron değerleri lesireline grubunda 6.3±0.9 ng/ml ile kontrol grubuna göre (5.2±1.0 ng/ml) daha yüksek bulunmasına rağmen istatistiksel yönden önemli bir fark belirlenmedi (p>0.05). Lesireline uygulaması ile siklusun ortasında progesteron seviyesinde önemli derecede yükselme olmasına rağmen gebelik oranlarını etkilemediği belirlendi.

Anahtar Kelimeler:

suni tohumlama, gebe kalma oranı, inek, GnRH, gebelik, progesteron

İneklerde suni tohumlamadan sonraki beşinci günde lesireline uygulamalarının gebelik oranı ve luteal fonksiyona etkisi.

The aim of this study was to increase pregnancy rates by administering lesireline five days after artificial insemination (AI). Five days after AI, lesireline acetate (2 ml) and physiologic saline solution (2 ml) were injected intramuscularly in Group I (n=29) and Group II (n=27), respectively. Blood samples were collected at AI (day 0) and 5, 10 and 20 days after AI to determine serum progesterone concentrations. Pregnancies were diagnosed via palpation per rectum at day 60 after AI. Pregnancy rates were 24.1% and 22.2% in lesireline (Group I) and control (Group II) groups, respectively, and these pregnancy rates did not significantly differ between groups (p>0.05). Serum progesterone concentrations ten days after AI were not significantly different between experimental and control groups (p>0.05). Although serum progesteron concentration in lesireline group (6.3±0.9 ng/ml) was higher than those in control group (5.2±1.0 ng/ml), it did not significantly differ between groups (p>0.05). In spite of the fact that administration of lesireline resulted in significant rise in progesterone levels in the middle of the cycle, pregnancy rates did not differ between groups.

Keywords:

artificial insemination, conception rate, cows, GnRH, pregnancy, progesterone,

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