Barış Atalay USLU, FETİH GÜLYÜZ, ÖMER UÇAR

Induction of oestrus with single or split ecg administrations in Turkish Van Cats during the non-breeding season

Sunulan çalışmada, üreme sezonu dışındaki Van kedilerinde equine chrionic gonadotrophin (eCG)’nin reprodüktif parametreler üzerine etkileri araştırıldı. Üreme mevsimi dışında (Ekim), toplam 18 kedi eşit olarak üç deney grubuna ayrıldı. Kontrol grubundaki (Grup I, n=6) dişi kedilere 1 ml %0.9 luk tuzlu su, tek plasebo enjeksiyonu (intramüsküler, i.m.) yapılırken, Grup II’dekilere (n=6) tek doz (250 IU, i.m.) ve Grup III’tekilere (n=6) 5 gün süreyle bölünmüş eCG dozları (75 IU/gün, i.m.) uygulandı. Östrüs oranı, çiftleşme günleri, gebelik oranı, doğum oranı, bir batında doğan yavru sayısı, yavruların yaşama oranı ve laktasyon periyodu verileri kaydedildi. Östrüs oranı, Grup II ve III’te (%100) kontrol grubundakilerden (%33.3±21.1) önemli düzeyde daha yüksek bulundu (P

Anahtar Kelimeler:

kızgınlık, Türkiye, kedi, koryonic gonadotropin, laktasyon, gebelik

Anöstrüs sezonundaki Van Kedilerinde tek veya bölünmüş doz ecg uygulamaları ile östrüslerin uyarılması

Effects of equine chrionic gonadotrophin (eCG) upon reproductive traits of Van cats during the non-breeding season were investigated herein. In the non-breeding season (October), a total of 18 queens were divided equally into three experimental groups, as follows: one ml of 0.9% saline solution, as single placebo injection (intramuscularly, i.m.) was given to queens, as control (Group I, n=6), while single (250 IU, i.m.) or split dose of eCG (75 IU/daily for 5 d) was injected in Group II and III (n=6 each), respectively. Data from the rates of oestrus, days of mating, pregnancy, parturition, litter size, survival of kittens and lactation period were recorded. The oestrus rates (100% both) in Groups II and III were significantly (P<0.01) higher than those in controls (33.3±21.1%). Days of mating (9.0±1.0, 4.7±0.7 and 5.8±0.4 d) were significantly (P≤0.01) different between the groups (Group I, II and III, resp.). Pregnancy period (65.8±0.5 d) was significantly (P<0.05) longer in Group III ((65.8±1.0 d) than in Group II (62.4±1.0 d) and controls (62.5±0.5 d). The litter size tended (p=0.062) to be higher in Group II (4.6) than those in Group III (2.6) and controls (3.0). Finally, the lactation period (105.2±2.6 d) was significantly (P<0.05) longer in Group III than those in Group II (94.6±1.7 d) and controls (95.0±5.0 d). Findings suggest that; both single and split eCG injections were equally highly effective for induction of fertile oestrus in endemic Van cats in non-breeding season.

Keywords:

oestrus, Turkey, cats, chorionic gonadotropin, lactation, pregnancy,

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