Cihan KAÇAR, Selim ASLAN

İneklerde geç postpartum dönemde PRID VE CIDR-B ile $PGF_{2alpha}$ (İliren) kombinasyonunu fertilite parametrelerine etkisi

Sunulan çalışmada, geç postpartum dönemde bulunan ineklere uygulanan PRID Spirali ve CIDR-B'nin fertilite parametrelerine olan etkileri ve hormonal düzey (P4) farklılıklarının ortaya konması amaçlandı. Çalışma materyalini Ankara Bala Tarım işletmesinde postpartum 45-55. günler arasında bulunan, Holstein ırkı 45 adet inek oluşturdu, ineklere PRID (Progesterone-Releasing-Intravaginal-Device; 1,55 g Progesteron ve 10 mg Östradiolbenzoat) ve CIDR-B (Controlled Internal Drug Release; 1,9 g Progesteron) intravaginal yolla uygulandı. İlk iki uygulama grubu ve kontrol grubunun herbiri 15'er inekten oluştu. Çalışma ve kontrol grubundaki ineklerden uygulamanın 0, 4, 8, 12. günleri, östrus ve ovulasyon zamanında kan alındı. PRID ve CIDR-B' nin çıkarıldığı gün 3,5 mi $PGF_{2alpha}$ (İliren®) i.v. yolla uygulandı. Östrus semptomu gösteren ineklerde rektal palpasyon ile graaf follikülü tespit edilerek sun'i tohumlama yapıldı ve üçüncü tohumlama sonrasına kadar alınan sonuçlar değerlendirildi. PRID uygulanan ineklerin %53,3'ünde, CIDR-B uygulanan ineklerin %66,6'sında vaginal suppurasyon saptandı. PRID ve CIDR-B gruplarında östrus semptomları %93,3 oranında gözlenirken, kontrol grubunda bu oran %66,6 olarak belirlendi. Uygulama bitimi-östrus görülme zamanının PRID grubunda 2,5±1,3 gün, CIDR-B grubunda 3,9±2,0 gün olduğu tespit edildi. Her iki grup arasındaki fark istatistiksel yönden önemli bulundu (p

Effect of PRID and CIDR-B in combination with $PGF_{2alpha}$ (İliren) on fertility parameters of cows in late postpartum period

The aim of the study was to evaluate the effects of PRID and CIDR-B on fertility parameters of cows in late postpartum period and to find out the differences in hormone (P4) levels. Forty-five Holstein cows, between days 45-55 postpartum from Ankara Bala Tarım işletmesi were used as material of the study. Cows were inserted PRID (Progesterone- Releasing-Intravaginal- Device; 1.55 g Progesteron ve 10 mg Östradiolbenzoat ) or CIDR-B (Controlled Internal Drug Release; 1.9 g Progesteron) intravaginally. Each group involved 15 cows. Blood samples were taken on days; 0, 4, 8, 12, at oestrus and immediately after ovulatipn from all cows. At the time of PRID and CIDR-B removal, 3.5 ml $PGF_{2alpha}$administered i.v. Cows observed in behavioral oestrus were artificially inseminated and results until after third inseminations were evaluated in all groups. Vaginal suppuration was observed in 53.3% of cows in which PRID Spirals were inserted and 66.6% of cows in which CIDR-B were inserted. While the percentage of oestrus detection was 93.3% for PRID and CIDR-B groups together, it was 66.6% in for control group. It is found that intervals between the end of the treatment and time of behavioral oestrus were 2.5±1.3 and 3.9±2.0 days in PRID and CIDR-B groups, respectively. The difference between these two groups was statistically important (p0.05). In conclusion, both of PRID and CIDR-B treatments could be used for sexual syncronization and their effects on obtained fertility parameters are similar.

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