The Influence of Corpus Luteum Size on the Conception in Embryo Transfer Recipient Cows

Authors : Erkan Say, Mehmet Ferit Özmen, Hakan Sağirkaya

Pages : 77-81

Doi:10.46897/livestockstudies.610205

View : 18 | Download : 8

Publication Date : 2021-12-23

Article Type : Research

Abstract :The aim of study was to investigate the effect of corpus luteums (CL) size that detected before embryo transfer on conception in recipient Holstein cows. The recipient cows utilized had at least one birth and aged 3-8 years old. PGF2α was injected 2 times space 14 days apart to cows and 87 cows which show estrous symptoms were determined as recipient. Fresh embryos were transferred after estrous in 6th-8th days. Ovaries were examined by ultrasound before transfer and CL sizes were measured. A scale of ‘++++’ were set as a result of measurements. Recipient cows were into 3 groups. The first group was named as CL2+ (n=25) and consisted of cows with ‘++’ (≥15-20 0.05). As a result, it was concluded that the size of the corpus luteum has no effect on the conception of cows utilized as recipients in embryo transfer.
Keywords : Corpus luteum, Embryo transfer, Recipient cow