kvj

Kocatepe Veterinary Journal

2147-6853

Afyon Kocatepe University

10.30607/kvj.1282056

Veterinary Sciences

Veteriner Bilimleri

Simmental Irkı İneklerde Optimum Gönüllü Bekleme Süresi ve Senkronizasyon Programının Belirlenmesi

Determining the optimum voluntary waiting period and synchronization protocol in Simmental cows

https://orcid.org/0000-0002-7977-6826

Kara

Uğur

Doğu Akdeniz Tarımsal Araştırma Enstitüsü

https://orcid.org/0000-0002-8959-5658

Düzer

Mehmet

https://orcid.org/0000-0002-5451-1397

Hızlı

Hatice

DOĞU AKDENİZ TARIMSAL ARAŞTIRMA ENSTİTÜSÜ

https://orcid.org/0000-0002-6884-2621

Baki Acar

Duygu

AFYON KOCATEPE ÜNİVERSİTESİ, VETERİNER FAKÜLTESİ

09 30 2023

16 3 401 409 04 12 2023 08 21 2023

2008

Kocatepe Veterinary Journal

Bu çalışmanın amacı, Simental ırkı ineklerde farklı gönüllü bekleme sürelerinin (GBS) sonunda dört farklı senkronizasyon programının etkinliğinin karşılaştırılması, doğum sayısı ve süt veriminin bu senkronizasyon protokolleri ile gebelik oranlarına etkilerinin değerlendirilmesidir. Hayvanlar rastlantısal olarak dört farklı senkronizasyon ve bir kontrol grubuna ayrıldı. Doğum sayısı, süt verimi (≤23 kg/gün; >23 kg/gün) ve sağılan gün sayısının (SGS; 45-60, 61-90, >90 günler) uygulanan senkronizasyon protokollerine etkileri karşılaştırıldı. Ovsynch (Grup I; n=81), Ovsynch+Progesteron (Grup II; n=30), G6G (Grup III; n=66), 2xG6G (Grup IV; n=45) ve kontrol (n=35) grupları oluşturuldu. Doğum sayısının gebelik oranlarına etkisi karşılaştırıldığında, ilk laktasyondaki primipar ineklerde multipar ineklere göre özellikle Grup II’de istatistiksel önemin (P0,05), süt veriminin de gebelik oranı üzerinde istatistiksel öneme yol açmadığı (P>0,05) belirlendi. Sonuç olarak, Simental ırkı ineklerin Ovsynch, Ovsynch+Progesteron, G6G ve 2xG6G protokolleri ile senkronizasyonunun farklı sağılan gün sayısı (SGS)’na göre gebelik oranlarını etkilemediği belirlendi. Sunulan çalışmadan elde edilen veriler veteriner hekimlerin pratik, etkili, uygun maliyetli ve çiftliğin özel ihtiyaçlarını karşılayabilecek yukarıda belirtilen herhangi bir senkronizasyon protokolünü seçebileceğini, en uygun gönüllü bekleme süresinin ise çiftliğin ekonomik ve bölgesel piyasa hedeflerine göre planlanmasının daha etkili ve verimli olacağını ortaya koymaktadır.

The objective of the present study was to compare four different synchronization protocols at the end of various voluntary waiting period (VWP) and evaluate the effect of parity and milk yield on pregnancy rates with synchronization in Simmental cows. All animals were randomly allocated into four synchronization groups and one control group. Parity, milk yield (≤23 kg/d; >23 kg/d), and days in milk (DIM; 45-60, 61-90, >90 days) were compared according to synchronization protocols. Ovsynch (Group I; n=81), Ovsynch+Progesterone (Group II; n=30), G6G (Group III; n=66), 2xG6G (Group IV; n=45), and a control group (n=35) were designed for the study. The parity significantly affected the pregnancy rates in the primiparous cows, especially in Group II (P0.05). There was no significant difference between milk yield and pregnancy rates (P>0.05). In conclusion, the synchronization of Simmental cows with Ovsynch, Ovsynch+Progesterone, G6G, or 2xG6G did not affect pregnancy rates across various DIM. These data suggest that the suitable VWP could be planned according to the farm’s economic and local market targets, with veterinarians able to choose a protocol based on practicality, effectiveness and cost, as well as the specific requirements of the herd.

Simmental Cow Synchronization Woluntary Waiting Period

Simental İnek Senkronizasyon Gönüllü Bekleme Süresi

No support was received during this study.

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