Japanese Journal of Veterinary Research;Volume 28, Number 1-2

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ONE TO TWO DAY PRESERVATIONS OF BOVINE EMBRYOS

KANAGAWA, Hiroshi

Permalink : http://hdl.handle.net/2115/2180
JaLCDOI : 10.14943/jjvr.28.1-2.1

Abstract

Twenty morula stage bovine embryos were grouped into 2 categories and preserved : 8 morulae in room temperature (20-25℃) and 12 morulae in low temperature (4-5℃) for 1 to 2 days, then transferred to 8 recipient heifers. The recipient heifers were selected in the same stage of estrus as the donor. Five recipient heifers received 2 embryos, and 3 recipient heifers received 3-4 embryos. Three out of the 4 recipient heifers which received embryos preserved for 1 day at room and low temperatures became pregnant. However, there were no pregnancies observed in the 4 recipient heifers which received embryos preserved for 2 days, although the embryos looked normal morphologically.

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