Alman Alaca × Kıl melezi ve Saanen Irkı Keçilerde Anogenital Mesafenin Karekterizasyonu ve Fertilite ile İlişkisi

Abstract

Sunulan çalışmada, üreme mevsimi içerisinde östrüsları senkronize edilen Alman Alaca × Kıl melezi ve Saanen ırkı keçilerde anogenital mesafenin (AGM) karekterizasyonu ve fertilite ile ilişkisinin ortaya konulması amaçlanmıştır. Çalışmada 53 baş Alman Alaca x Kıl melezi (%75 Alman Alaca ve %25 Kıl keçisi) ve 55 baş Saanen ırkı keçi kullanıldı. Sünger uygulanmadan önce tüm keçilerin anogenital mesafeleri dijital kumpasla ölçülerek kaydedildi. Her ırk için kısa AGM grubu ve uzun AGM grubu olmak üzere iki AGM kategorisine ayrıldı. Bu keçilere 0. gün intravajinal 60 mg medroksiprogesteron asetat içeren sünger uygulandı, süngerler 13 gün süreyle vajinada tutuldu. Tüm keçilerde uygulamanın on üçüncü günü süngerler çıkarıldı ve sünger çıkarılması anında 500 IU dozda eCG uygulandı. Östrüste olduğu tespit edilen keçiler elde aşım yöntemiyle (teke/keçi oranı: 1/7) fertil tekelerden bir tanesi ile çiftleştirildi. Teke katımından sonraki 40. günde çiftleşen hayvanlara ultrasonografik gebelik muayenesi yapıldı. Tüm gruplarda östrüs oranı, gebelik oranı, doğum oranı, çoklu doğum oranı, yavru verimi ve erkek yavru oranı parametreleri hesaplandı. Yapılan istatistiksel analiz sonrası gruplar arasında takip edilen parametreler arasında önemli bir fark saptanmadı (p>0,05). Sonuç olarak üreme mevsimi içerisinde progestagen uygulamaları ile östrüsları senkronize edilen Alman Alaca x Kıl melezi ve Saanen ırkı keçilerde anogenital mesafenin fertilite üzerine farklılık yaratmadığı görüldü. Keçilerde anogenital mesafenin karekterizasyonu ve fertilite ile ilişkisinin açıkça ortaya konulabilmesi için daha ayrıntılı çalışmalara ihtiyaç olduğu düşünülmektedir.

Keywords

• Anogenital mesafe
• fertilite
• keçi
• üreme sezonu

Characterization of Anogenital Distance and Its Relationship with Fertility in German Fawn × Hair Crossbred and Saanen Goats

Abstract

In the presented study, it was aimed to reveal the characterization of anogenital distance (AGD) and its relationship with fertility in German Fawn × Hair crossbred and Saanen goats whose estrus was synchronized during the breeding season. 53 heads of German Fawn × Hair crossbred (75% German Pied and 25% Hair goat) and 55 heads of Saanen breed goats were used in the study. Before applying the sponge, the anogenital distances of all goats were measured and recorded with a digital caliper. For each breed, they were divided into two AGD categories: short AGD group and long AGD group. A sponge containing 60 mg medroxyprogesterone acetate was applied intravaginally to these goats on day 0, and the sponges were kept in the vagina for 13 days. On the thirteenth day of application, sponges were removed in all goats, and eCG was administered at a dose of 500 IU at the time of sponge removal. Goats on estrus were hand mated with one of the proven bucks (goat:buck ratio of 7:1). The parameters of estrus rate, pregnancy rate, kidding rate, multiple birth rate, litter size and male litter rate were calculated in all groups. After the statistical analysis, no significant difference was detected in the parameters monitored between the groups (p>0,05). It was concluded that anogenital distance did not make a difference on fertility in German Fawn × Hair crossbred and Saanen goats whose estrus was synchronized with progestagen applications during the breeding season. It is thought that more detailed studies are needed to clearly demonstrate the characterization of anogenital distance and its relationship with fertility in goats.

Keywords

• Anogenital distance
• breeding season
• fertility
• goat

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