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Effects of Number of Embryos Transferred, the State of Uterus and Ovary on Pregnancy Rates, and Artificial Induction of Twins with Hanwoo IVF Embryos  

Yoon, Do-Joong (Department of Animal Sciense, Chungbuk National University)
Kim, Gye-Woong (Department of Animal Resources Community, KongJu National University)
Kim, Kon-Joong (Department of Animal Resources Community, KongJu National University)
Kim, Duk-Jung (Department of Animal Sciense, Chungbuk National University)
Kim, Nam-Hyung (Department of Animal Sciense, Chungbuk National University)
Lee, Jong-Wan (Department of Animal Resources Community, KongJu National University)
Publication Information
Reproductive and Developmental Biology / v.36, no.2, 2012 , pp. 95-101 More about this Journal
Abstract
The purpose of this experiment was to compare the pregnancy rate (PR) according to the state of the ovaries and uterus, according to the number of embryos transferred from cows and heifers and to investigate the method of artificial twin induction with Hanwoo in vitro fertilized (IVF) embryos by embryo transfer (ET). Looking at the PR according to the condition of the ovaries and uterus, the result was not influenced by the condition of the ovaries, but was significantly influenced by the state of the uterus. The PR according to the number of embryos transferred from cows was 36.8%, 53.0%, 50.5% for 1, 2, and 3 embryos, respectively and although there was a higher frequency of twin calves with 3 embryos than 2, the calving rate was the highest with 2 embryos. In case of heifers, the transfer of 1 embryo showed the best pregnancy and calving rate, and although the PR was similar with 2 embryos (67.7 versus 66.4), in case of 2 embryos transferred there was high frequency of embryonic loss (6.1%) occurred when a cow was diagnosed at 28 and 53 d after ET, total loss (21.3%); sum of fetal death, abortion and stillbirth after pregnant diagnosis at 60 day.
Keywords
PR; IVF; ET; Twins;
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Times Cited By KSCI : 1  (Citation Analysis)
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