The effects of Cosynch 56 protocol on pregnancy rates of cows and heifers presynchronized with a single dose of PGF2alpha
Yazarlar (10)
C. Kacar
Kafkas Üniversitesi, Veteriner Fakültesi, Türkiye
Kafkas Üniversitesi, Veteriner Fakültesi, Türkiye
N. C. Lehimcioglu
Kafkas Üniversitesi, Veteriner Fakültesi, Türkiye
Kafkas Üniversitesi, Veteriner Fakültesi, Türkiye
H. Oral
Kafkas Üniversitesi, Veteriner Fakültesi, Türkiye
Kafkas Üniversitesi, Veteriner Fakültesi, Türkiye
S. Yildiz
Kafkas Üniversitesi, Veteriner Fakültesi, Türkiye
Kafkas Üniversitesi, Veteriner Fakültesi, Türkiye
S. Kaya
Kafkas Üniversitesi, Veteriner Fakültesi, Türkiye
Kafkas Üniversitesi, Veteriner Fakültesi, Türkiye
Prof. Dr. Mushap KURU Kafkas Üniversitesi, Türkiye
A. K. Zonturlu
Harran Üniversitesi, Türkiye
Harran Üniversitesi, Türkiye
S. M. Pancarci
Balikesir Üniversitesi, Türkiye
Balikesir Üniversitesi, Türkiye
O. Gungor
University Of Mehmet Akif, Türkiye
University Of Mehmet Akif, Türkiye
S. Aslan
Ankara Üniversitesi, Türkiye
Ankara Üniversitesi, Türkiye
| Makale Türü | Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale) | ||
| Dergi Adı | Revue De Medecine Veterinaire (Q4) | ||
| Dergi ISSN | 0035-1555 Wos Dergi Scopus Dergi | ||
| Dergi Tarandığı Indeksler | SCI-Expanded | ||
| Makale Dili | İngilizce | Basım Tarihi | 03-2015 |
| Cilt / Sayı / Sayfa | 166 / 3 / 90–95 | DOI | – |
| Özet |
| ABSTRACT he objective of this study was to evaluate pregnancy rates to timed artificial insemination (TAI) following presynchronization with a single dose of PGF2α ten days before CoSynch-56 protocol in Brown Swiss crossbred cows and heifers. Group I (GI) cows (n= 89) and heifers (n= 39) received PGF2α ten days prior to Cosynch-56 protocol while Group II (GII) cows (n= 82) and heifers (n= 38) received CoSynch-56 protocol only. Pregnancy was evaluated using ultrasonography 30-35 days after TAI. Pregnancy rates did not differ significantly between GI and GII (34.4% and 28.3%, respectively, P> 0.05). However, pregnancy rates differed significantly (P< 0.05) between cows and heifers in GII (34.1% and 15.7%, respectively). Furthermore, pregnancy rates of heifers in GI was significantly higher than that of heifer in GII (P< 0.01, 41.0% and 15.7%, respectively). Notably, pregnancy was not achieved in GII heifers with plasma P4 values< 1ng/ml. In conclusion, presynchronization with PGF2α before Cosynch-56 protocol did not enhance pregnancy rates in Brown Swiss cows but did in heifers. Also, high P4 levels may enhance overall pregnancy rates of cows and heifers subjected to the Cosynch-56 protocol. |
| Anahtar Kelimeler |
| cow | heifer | presynch | Cosynch-56 | pregnancy rate |
