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KMID : 0900920010250010009
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Korean journal of Animal Reproduction
2001 Volume.25 No. 1 p.9 ~ p.17
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Effects of Characteristics of Corpus Luteum and Serum Metabolites on Pyegnancy Rate Following Embryo Transfer in Hanwoo Cow
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Oh S.-J.
Yang B.-S.
Seong Hwan-Hoo
Park Y.-Y.
Kim K.-N.
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Abstract
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To determine the effect of the characteristics of the corpus luteum (CL) and serum metabolites on pregnancy rate following embryo transfer in Hanwoo cow, recipients were synchronized the estrus with CIDR. in vivo or in vitro produced bovine embryos were transferred to synchronized recipients. The characteristics of the CL were checked by rectal palpation and ultrasound. Blood samples were collected from jugular vein at Day 7 and analysed progesterone and serum metabolites. The results obtained from this study were as follows; 1. Total 397 embryos were transferred to recipient and 121 heads out of them were pregnant. The pregnancy rate was 30.5% and slightly differences between farms. 2. There was not significantly different the pregnancy rates between the size of CL and the cavity CL. In the recipients which had more than 2ng/mell of serum progesterone level, the pregnancy rates was in higher than others (46.6% vs. 24.4%, 15.0%). 3. The highest pregnancy rate was obtained at 90 to 110mg/㎗ in serum total cholesterol, 14 to 16mg/㎗ in BUN, and 70 to 80mg/㎗ in serum glucose, respectively, and these metabolites in blood could be used as the criteria in the selection of recipient at embryo transfer.
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KEYWORD
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Hanwoo cow, Corpus luteum, Serum metabolites, Embryo transfer
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