MEDIUM FOR IMPROVING DEVELOPMENT RATE OF FERTILIZED EGGS HAVING LOW CONCEPTION RATE

摘要

[Problem] To provide a technique for improving the conception rate and birth rate in mammals having genetic characteristics such as low conception rate and birth rate in pregnancy by natural mating even though ovulation function and the eggs themselves are seemingly normal; or in ova having lowered conception rate and birth rate due to environment, age, and other such factors. [Solution] To remove the fertilized eggs of a mammal exhibiting low conception rate and low birth rate from the body, culture the eggs in vitro using a medium containing a glycine receptor agonist of a specific concentration, then return the embryos to the mother and bring to term.