Effects of Number of Embryos Transferred, the State of Uterus and Ovary on Pregnancy Rates, and Artificial Induction of Twins with Hanwoo IVF Embryos
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서지정보
ㆍ발행기관 : 한국동물번식학회
ㆍ수록지정보 : Reproductive & developmental biology / 36권 / 2호
ㆍ저자명 : Do-Joong Yoon, Gye-Woong Kim, Kon-Joong Kim, Duk-Jung Kim, Nam-Hyung Kim, Jong-Wan Lee
목차
ABSTRACT INTRODUCTION MATERIALS AND METHOD In Vitro Embryo Production Artificial Estrus Induction Embryo Transfer Pregnancy Diagnosis Comparison of PR according to the State of Uterus and Ovaries Comparison of PR according to the Number of Transferred Embryos Artificial Induction of Twining in Hanwoo Cows Statistics RESULTS AND DISCUSSION The Effects following the States of Ovary and Uterus Impact of the Number of Transferred Embryos Artificial Production of Twin Calves in Hanwoo Cows REFERENCES
영어 초록
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.
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