Relationship between pregnancy rate and serum progesterone concentration in cases of porcine embryo transfer
2014
Moon, J.H., Seoul National University, Seoul, Republic of Korea | Choi, J.Y., Seoul National University, Seoul, Republic of Korea | Kang, J.T., Seoul National University, Seoul, Republic of Korea | Park, S.J., Seoul National University, Seoul, Republic of Korea | Kim, S.J., Seoul National University, Seoul, Republic of Korea | Jang, G., Seoul National University, Seoul, Republic of Korea | Lee, B.C., Seoul National University, Seoul, Republic of Korea
The level of P4 at the time of embryo transfer (ET) is important. P4 concentrations and numbers of corpora lutea for 126 recipients were evaluated. Nuclear transfer embryos were transferred into 126 surrogates. 11 maintained their pregnancy until full-term delivery, 17 miscarried, and implantation failed in 98 animals. P4 levels in the full-term group were significantly different from those of the pigs that aborted or in which implantation failed (p ＜ 0.05). However, the numbers of corpora lutea were not significantly different. These findings indicate that the concentration of progesterone can be an important factor for successful ET in pigs.
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