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한우 수정란이식에 있어서 발정 동기화된 수란우의 황체 등급이 수정란이식 수태율에 미치는 영향Effects of Corpus Luteum Grade of Estrus Synchronized Recipients on Pregnancy Rate following Embryo Transfer in Korean Cattle
- Other Titles
- Effects of Corpus Luteum Grade of Estrus Synchronized Recipients on Pregnancy Rate following Embryo Transfer in Korean Cattle
- Issue Date
- 2011
- Publisher
- 사단법인 한국동물생명공학회
- Keywords
- pregnancy rate; embryo transfer; corpus luteum; Korean cattle
- Citation
- 한국동물생명공학회지, v.26, no.1, pp 33 - 36
- Pages
- 4
- Indexed
- KCI
- Journal Title
- 한국동물생명공학회지
- Volume
- 26
- Number
- 1
- Start Page
- 33
- End Page
- 36
- ISSN
- 2671-4639
- Abstract
- The objective of this work was to determine the effect of corpus luteum (CL) grade on pregnancy rate after embryo transfer in Korean cattle and we found that CL development was linked to pregnancy rate. The in vivo derived blastocyst-stage embryos were transferred to 15 recipients synchronized in the estrus cycles. Based on size and palpable characteristics, CLs were categorized into three grade. The grade three CL is not to be identified by rectal palpation. The pregnancy rates tended to increase with the increase in CL size of recipients. In grade one, two, and three, the pregnancy rates were 62.5%, 50.0%, and 0%, respectively. This result suggests that pregnancy rates after embryo transfer might be affected by the CL status of recipients.
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