Year 2019, Volume 22 , Issue , Pages 424 - 430 2019-12-31

Akkaraman Koyunlarının Bazı Üreme Özellikleri Üzerine Progesteron Ve Östrojen Hormon Seviyelerinin Etkileri
The Effects of Progesterone and Estrogen Hormone Levels on Some Reproductive Characteristics of The Akkaraman Sheep

Afşin KOCAKAYA [1] , Ceyhan ÖZBEYAZ [2]


Bu çalışmada, Akkaraman koyunlarının üreme döneminde progesteron ve östrojen hormon düzeylerini ve bu hormonların bazı üreme özellikleri üzerine etkileri incelenmiştir. İncelenen 31 baş koyunda doğum oranı %90.32; tek doğum oranı %53.57; ikizlik oranı %46.42; kuzu verimi %132.25 ve tek doğuma kuzu oranı ise 1.46 olmuştur. Birinci ikinci östrus arası progesteron seviyeleri tek doğuran koyunlarda 3.69-12.20 ng/ml; ikiz doğuran koyunlarda 3.04-10.44 ng/ml; östrojen miktarları tek doğuran koyunlarda 39.40-84.03 pg/ml ve ikiz doğuran koyunlarda 52.44-72.77 pg/ml olarak bulunmuştur. Progesteronun anöstrus dönemindeki seviyesi 0.20-10.20 ng/ml; östrojenin 6.30-169.60 pg/ml olmuştur. Östrojen hormonunun doğum tipi üzerine etkisi önemsiz; progesteron seviyelerinin ikinci östrustan önceki ikinci ve üçüncü günlerde doğum tipine etkisinin önemli olduğu (P<0.05 ve P<0.001) tespit edilmiştir. Sonuç olarak, progesteron hormonunun ortalama değerleri ile maksimum ve minimum değerleri arasındaki farklılık prolifik ırklara benzerlik göstermektedir. Östrojen hormonu seviyeleri prolifik ırklardan düşük, prolifik olmayan ırklardan yüksek olmuştur. Bu nedenle Akkaraman ırkının kombine verimli prolifik bir ırk olarak değerlendirilebileceği düşünülmektedir.

In this study, progesterone and estrogen hormone levels of Akkaraman sheep and their effects on some reproductive traits were investigated. The data obtained, from 31 ewes, as 90.32% for lambing, 53.57% for a single birth, 46.42% for twinning, 132.25% for lamb production and 1.46 for litter size. Between the first and second estrus, progesterone levels were found to be between 3.69-12.20 ng/ml for singles and 3.04-10.44 ng/ml for twins; estrogen levels were determined to be between 39.40-84.03 pg/ml for singles and 52.44-72.77 pg ml for twins. The equivalent values at anestrus period of progesterone were 0.20-10.20 ng/ml, and estrogen levels were 6.30-169.60 pg/ml. The effects of birth type on estrogen level were not-significant, while progesterone levels were determined to be significant on the second and third days before the second estrus (P<0.05 and P<0.001). In conclusion, least square means and standard errors and differences between maximum and minimum progesterone hormone levels were similar to those of prolific breeds. Estrogen levels were found lower than prolific breeds but were higher than non-prolific breeds. Therefore, Akkaraman breed can be foreseen as a combine prolific breed.
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Primary Language en
Subjects Agriculture
Journal Section RESEARCH ARTICLE
Authors

Orcid: 0000-0003-2023-8895
Author: Afşin KOCAKAYA (Primary Author)
Institution: ANKARA UNIVERSITY, ANKARA FACULTY OF VETERINARY MEDICINE
Country: Turkey


Orcid: 0000-0002-3748-9992
Author: Ceyhan ÖZBEYAZ
Institution: ANKARA UNIVERSITY, ANKARA FACULTY OF VETERINARY MEDICINE
Country: Turkey


Supporting Institution Scientific and Technological Research Council of Turkey-TUBITAK
Project Number 112O342
Thanks This article was produced from the PhD thesis of the first author with the consultancy of the second author and the study was supported by the Scientific and Technological Research Council of Turkey-TUBITAK (project number: 112O342). An oral presentation produced from the same thesis tittled “Investigation of Some Reproductive Characteristics and Progesterone Levels of Akkaraman Sheep” was presented at the International Congress on Advances in Veterinary Sciences & Technics (ICAVST) in Bosnia and Herzegovina and printed as full text in Book of Abstracts p:218-224, 24-29th August 2016.
Dates

Application Date : June 27, 2019
Acceptance Date : August 21, 2019
Publication Date : December 31, 2019

APA Kocakaya, A , Özbeyaz, C . (2019). The Effects of Progesterone and Estrogen Hormone Levels on Some Reproductive Characteristics of The Akkaraman Sheep . Kahramanmaraş Sütçü İmam Üniversitesi Tarım ve Doğa Dergisi , Cilt 22 (Ek Sayı 2) , 424-430 . DOI: 10.18016/ksutarimdoga.vi.583400