Saanen X Kıl Erkek Keçinin Yaşına Göre Cinsel Deneyim ve Davranış Özelliklerinin Sürü Verimliliğine Etkisi

Year 2024, , 1 - 8, 08.07.2024

Funda Ataç Duygu Kaşıkcı

https://doi.org/10.29185/hayuretim.1269699

Abstract

Amaç: Bu çalışma, tekelerin cinsel deneyiminin keçilerin çiftleşme performansı üzerindeki etkisini araştırmayı amaçladı. Bu nedenle, çiftleşme verimi ve cinsel deneyimi yüksek deneyimli tekeler, sürü verimliliğini artırmak için çiftleştirme programına dahil edilmelidir.
Gereç ve Yöntemler: Onbeş cinsel deneyimsiz genç teke, eş zamanlı altı kızgın dişinin bulunduğu bölmelerde ayrı ayrı barındırıldı. Doksan dişi Saanen x Hair, 6'şarlı 15 gruba ayrılarak deneyde kullanıldı. Veriler, doğrudan gözlem yoluyla ve iki yıl boyunca aynı zaman diliminde kapalı devre kameralar kullanılarak toplanmıştır. Tekelerin binme sayısı, binme süresi, boşalma sayısı, boşalma süresi, çiftleşme etkinliği, kur yapma davranışı gibi cinsel davranış özellikleri ve çiftleşme davranışlarının keçilerin doğurganlık oranlarına etkisi değerlendirildi. Tekelerin çiftleşme etkinlik skorları ile keçilerin gebelik ve doğurganlık oranları 1. ve 2. yılda hesaplanmıştır. Yıllar arasındaki farkı belirlemek için paired sample t testi yapılmış ve her yıl için değişkenler arasındaki ilişkiyi belirlemek için korelasyon katsayıları hesaplanmıştır. Yüzde olarak elde edilen verilere arksin dönüşümü uygulandı. Değişken kümeleri arasındaki ilişkiyi belirlemek için dönüştürülen verilere kanonik korelasyon analizi uygulanmıştır.
Bulgular: Birinci yılda yavru sayısı ve doğurganlık oranı sırasıyla %1.26 ve %21 olarak bulundu. İkinci yılda bunlar sırasıyla %2,93 ve %69'a yükseldi. Tekelerin birinci ve ikinci yıl çiftleşme verim puanları sırasıyla 0,10 ve 0,60 olarak hesaplanmıştır. Sonuçlar, deneyimli olgun tekelerin, çiftleşme performansı ve dolayısıyla sürü verimliliği üzerinde çok önemli bir etkiye sahip olduğunu gösterdi.
Sonuç: Tekelerde cinsel performans özellikleri, keçilerin gebe kalma oranlarını etkilemektedir. Cinsel davranış oranlarındaki değişimler gözlemlenerek zamanında müdahale ile çiftleşme başarısı arttırılabilir. Tekelerin cinsel davranışları, testis ölçüleri ve semen özelliklerinin birlikte değerlendirilmesi önerilir.

Keywords

kur yapma davranışı, doğurganlık, çiftleşme davranışı, deneyimsiz tekeler, cinsel oarak aktif tekeler

Effects on Herd Efficiency of Sexual Experience and Behavioral Characteristics of Saanen X Hair Male Goat Based On Age

Abstract

Objective: This study aimed to investigate the impact of bucks’ sexual experience on the mating performance of does. Therefore, experienced bucks with high mating efficiency and sexual experience must be included in the mating program to increase herd fertility.
Material and Methods: Fifteen sexually inexperienced young bucks were housed individually in pens with six estrus synchronized does. Ninety female Saanen x Hair does, divided into 15 groups of 6 were used in the experiment. Data was collected through direct observation and by use of closed-circuit cameras same time term for two years. Sexual behavior characteristics of bucks such as: number of times mounted, time taken to mount, number of ejaculations, ejaculation time, mating efficiency, courtship behavior and effects of mating behaviors on fertility rate of does were evaluated. Mating efficiency scores of bucks and the pregnancy and the fertility rate of does were calculated in the first, and second years. Paired samples t test was performed to determine differences between the years and correlation coefficients were calculated to determine the relationship between the variables for each year. Arcsine transformation was applied to data obtained by percentage. To determine the relationship between the variable sets, canonical correlation analysis was applied to the transformed data.

Results: In the first year, litter size and fertility rate were found to be 1.26 and 21%, respectively. In the second year, these increased to 2.93 and 69%, respectively. Mating efficiency scores of bucks for the first and second year was calculated as 0.10 and 0.60, respectively. Results showed that the experienced mature bucks had a very significant effect on the mating performance of the doe and, consequently, on herd productivity.

Conclusion: Sexual performance traits in bucks affect the conception rate of does. By observing changes in the rates of sexual behaviors, the achievement of mating with timely intervention can be increased. It is recommended to evaluate the sexual behavior of bucks, testicular measurements and semen characteristics together.

Keywords

courtship behavior, fertility, mating behavior, inexperienced bucks, sexually active bucks

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