[ Ana Sayfa | Editörler | Danışma Kurulu | Dergi Hakkında | İçindekiler | Arşiv | Yayın Arama | Yazarlara Bilgi | E-Posta ]
Fırat Üniversitesi Sağlık Bilimleri Veteriner Dergisi
2004, Cilt 18, Sayı 1, Sayfa(lar) 055-060
[ Turkish ] [ PDF ]
Effect of Progesterone Impregnated Device Combined with Prostaglandin F2 alpha on the Oestrous Cycle and Fertility in Mares
Mehmet Osman ATLI, Hayrettin ÇETİN, Abuzer K. ZONTURLU
Harran Üniversitesi Veteriner Fakültesi Doğum ve Jinekoloji Anabilim Dalı Şanlıurfa / TÜRKİYE
Keywords: PRID, PGF2 alfa, estrus synchronization, fertility, mare

The aim of this study was to determine whether the progesterone impregnated device combined with Prostaglandin F2 alpha treatment could be used for synchronization of estrus and ovulation as well as to determine effects of this application on fertility in cycle mares.

For this purpose, 28 thoroughbred fertile mares between 6 and 12 years old were used as materials between April and June. The animals were divided into two groups irrespective of their individual cycles as treated with Progesterone Impregnated device (PRID) group (n=13) and control group (n=15). After PRID removal, follicles were measured and classified into two groups in millimeters as follow; >20 mm (n=7) and ≤20 mm (n=6) during Prostaglandin F2 alpha injection in treated mares.

During treatment period, PRID prevented signs of estrus such as winking, endometrial edema and accepted stallion, but did not prevent silent ovulation as observed 15%. At the treated mares, estrus rate was 92%. Ovulation, pregnancy and embryonic death rates were 91%, 81%, 0% and 80%, 58%, 14% in treatment and control groups, respectively. There was no statistically significant difference between treatment and control groups for ovulation, pregnancy as well as embryonic death rates (P>0.05). Injection-estrus (day) and estrus-ovulation intervals (day) were 4.8±0.83, 6.25±1.50 and 3.28±0.75, 5.28±1.25 at ≤20 mm and >20 mm follicle size groups on their ovarium during PG injection, respectively. There was a statistically significant difference (P<0.05) between two follicle size (≤20 mm and >20 mm) groups for the mean interval between injection and estrus. Furthermore, during treated with PRID, vaginitis was seen in all animals, which was slight in 12 mares (%92) and moderate in one mare (%8). Vaginitis after PRID removal was disappeared within two days.

As a result, PRID combined with PGF2 alpha synchronized the estrous at high rate. However, various ovulation times were obtained and, follicle on the ovaries affected estrous due to ProstaglandinF2 alpha injection. Furthermore, PRID treatment prevented estrus onset, but did not prevent silent ovulation. Fertility was not impaired by this treatment.

[ Turkish ] [ PDF ]
[ Ana Sayfa | Editörler | Danışma Kurulu | Dergi Hakkında | İçindekiler | Arşiv | Yayın Arama | Yazarlara Bilgi | E-Posta ]