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.

Pregnancy Nutrition

Pregnancy Nutrition

Are You Expecting? Find Out Everything You Need to Know About Pregnancy and Nutrition Without Having to Buy a Dictionary. This book is among the first books to be written with the expertise of a medical expert and from the viewpoint of the average, everyday, ordinary,

Get My Free Ebook

Post a comment