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Related Experiment Videos

In vitro fertilization with normal development in the sheep.

N Crozet1, D Huneau, V Desmedt

  • 1I.N.R.A., Unité de Biologie de la Fécondation, Jouy-en-Josas, France.

Gamete Research
|February 1, 1987
PubMed
Summary

In vitro fertilization of sheep oocytes achieved high fertilization rates and successful pregnancies. This research demonstrates the viability of ovine oocyte in vitro fertilization for reproductive applications.

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Area of Science:

  • Reproductive Biology
  • Animal Science
  • In Vitro Fertilization

Background:

  • In vitro fertilization (IVF) is a key technology in animal reproduction.
  • Optimizing IVF protocols for sheep is crucial for genetic improvement and conservation.

Purpose of the Study:

  • To evaluate the efficacy of in vitro fertilization (IVF) using ovine oocytes.
  • To assess embryo development and pregnancy outcomes following IVF in sheep.

Main Methods:

  • Ovine oocytes (tubal and in vitro matured) were fertilized in vitro.
  • Embryos were cultured, transferred to recipient rabbits for assessment, and then to ewes for pregnancy.
  • Pregnancy maintenance and lambing were monitored.

Main Results:

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  • High fertilization rates were observed (75.8% for ovulated, 62.6% for in vitro matured oocytes).
  • Cleavage rates were 61.9% and 66.6% for embryos from ovulated and in vitro matured oocytes, respectively.
  • Successful pregnancies were established, with the first lamb born from an IVF ovulated oocyte.

Conclusions:

  • In vitro fertilization of ovine oocytes is effective, yielding viable embryos.
  • The study demonstrates the potential of IVF for sheep reproduction, with ongoing pregnancies from in vitro matured oocytes.