| abstract |
(57) [Summary] [Structure] An in vitro fertilization method in which an egg is taken out of the body and fertilized with sperm, and then the fertilized egg is transplanted into the female uterus, the egg or sperm is treated with an amino acid solution. Method for breeding livestock males and females, prior to the artificial fertilization, the female uterus is treated with an amino acid solution. How to divide. [Effects] According to the present invention, it is possible to separate males and females during fertilization in vivo and in vitro by amino acid treatment, and as a secondary effect, increase the conception rate of artificial insemination and embryo transfer. It is possible. Therefore, an animal having a genetically excellent trait can be efficiently produced at low cost, which is an extremely advantageous technique in the fields of livestock and life sciences. |