In Vitro Fertilization

Most donors of embryos are inseminated, so fertilization occurs in vivo. With in vitro fertilization (IVF), sperm are added to the oocytes in a test tube or petri dish. Usually, the processes of in vitro maturation, fertilization, and culture go together. IVF has been successful in all farm animals, but it has proven especially difficult in horses and has been commercially applied most frequently to cattle, especially to females with infertility problems.[5] To obtain oocytes from cows or mares, a long needle is inserted into the ovary through the vaginal wall in the same way that oocytes are recovered from infertile women for IVF. Ultrasonography is used to guide the needle so oocytes can be aspirated from ovarian follicles. An often used, alternative approach is to obtain oocytes from slaughterhouse ovaries to produce relatively inexpensive IVF-derived embryos for research, specific export markets, and for getting dairy cattle pregnant in heat-stressed environments.

100 Pregnancy Tips

100 Pregnancy Tips

Prior to planning pregnancy, you should learn more about the things involved in getting pregnant. It involves carrying a baby inside you for nine months, caring for a child for a number of years, and many more. Consider these things, so that you can properly assess if you are ready for pregnancy. Get all these very important tips about pregnancy that you need to know.

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