Please use this identifier to cite or link to this item: http://hdl.handle.net/11452/29817
Title: The effect of ovulatory follicle size at the time of insemination on pregnancy rate in lactating dairy cows
Authors: Okut, Hayrettin
Uludağ Üniversitesi/Veteriner Fakültesi/Jinekoloji ve Doğum Anabilim Dalı.
Uludağ Üniversitesi/Veteriner Fakültesi/Zootekni Anabilim Dalı.
0000-0001-9138-4422
0000-0003-2817-3221
Keskin, Abdulkadir
Mecitoğlu, Gülnaz
Bilen, Ebru
Güner, Barış
Orman, Abdulkadir
Gümen, Ahmet
AAG-9134-2021
AAG-4440-2019
AAH-1406-2021
AAH-3831-2021
24473229800
36457964000
57040965000
57188841418
24335834100
6602393069
Keywords: Veterinary sciences
Cow
Follicle size
Timed
AI protocol
Pregnancy rate
Artificial-insemination
Preovulatory follicle
Ovsynch protocol
Conception rate
Synchronization
Gnrh
Prostaglandin-F2-alpha
Estradiol-17-beta
Reproduction
Injection
Issue Date: 28-Sep-2015
Publisher: TÜBİTAK
Citation: Keskin, A. vd. (2016). "The effect of ovulatory follicle size at the time of insemination on pregnancy rate in lactating dairy cows". Turkish Journal of Veterinary and Animal Sciences, 40(1), 68-74.
Abstract: The aims of this study were to determine the factors that affect follicle size at the time of artificial insemination (AI) and to detect the relationship between ovulatory follicle size at the time of AI and pregnancy rate in dairy cows. A total of 1428 follicle size measurements were obtained from Holstein-Friesian (HF) and Swedish Red (SR) cows that were inseminated with the fixed-timed AI protocols used in this study. Follicle size was affected by breed (P - 0.0001), milk production (P - 0.01), parity (P - 0.05), and season (P = 0.04). Follicle size was greater (P = 0.0001) in the HF (15.55 mm) than the SR cows (14.88 mm). Multiparous cows had larger (P = 0.04) follicles (15.35 mm) than the primiparous cows (15.07 mm). Cows with follicle sizes between 13.5 and 17.5 mm were more likely to be pregnant than cows with other sizes follicles (P < 0.01). Embryonic loss was lower (P < 0.01) in cows with follicle sizes between 13.5 and 16.5 mm. Thus, the follicle size was affected by breed, milk production, parity, and season. Pregnancy and embryonic loss in lactating dairy cows were significantly related to follicle size.
URI: https://doi.org/10.3906/vet-1506-59
https://journals.tubitak.gov.tr/veterinary/vol40/iss1/11/
http://hdl.handle.net/11452/29817
ISSN: 1300-0128
Appears in Collections:Scopus
Web of Science

Files in This Item:
File Description SizeFormat 
Keskin_vd_2016.pdf206.91 kBAdobe PDFThumbnail
View/Open


This item is licensed under a Creative Commons License Creative Commons