In Vitro Fertilization

For over two decades researchers have been fine tuning in vitro (test-tube) fertilization (IVF) procedures for cattle. The IVF technology has only been commercially available at embryo transplant stations for cattle producers since the early 1990s because IVF is a complex multi-step process that requires a well-equipped laboratory and a skilled technician. From good-quality oocytes harvested from cattle ovaries, one would expect a 90% in vitro maturation rate and >80% cleavage rates.

The resulting IVF-derived embryos are held at cow body temperature in an incubator for 7 or 8 days, with the expectation of 35 50% reaching the morula and blastocyst stages of development. Embryos are then nonsurgically transferred to females at the appropriate stage of their estrous cycle. The pregnancy rate obtained with good-quality IVF-derived embryos is expected to range from 50 65%. Although viable healthy calves have been produced from frozen-thawed IVF-derived embryos, the pregnancy rate is generally lower than with unfrozen embryos.

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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