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Related Experiment Videos

A sucrose-DMSO extender for freezing rabbit semen

J S Vicente1, M P Viudes-de-Castro

  • 1Departamento de Ciencia Animal, Universidad Politecnica de Valencia, Spain.

Reproduction, Nutrition, Development
|January 1, 1996
PubMed
Summary

A new extender using sucrose and dimethyl sulphoxide (DMSO) significantly improved rabbit semen motility after thawing. This method successfully produced viable embryos for an embryo bank, aiding conservation and genetic programs.

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Area of Science:

  • Reproductive biology
  • Cryopreservation
  • Animal genetics

Background:

  • Establishing a rabbit embryo bank requires effective semen cryopreservation techniques.
  • Optimizing extender composition is crucial for maintaining sperm viability post-thaw.

Purpose of the Study:

  • To define a simple and effective extender for freezing rabbit semen.
  • To evaluate the viability of embryos produced from cryopreserved semen for an embryo bank.

Main Methods:

  • Experimentally determined optimal concentrations of dimethyl sulphoxide (DMSO) and sugars (sucrose, glucose, lactose, maltose) in the extender.
  • Assessed post-thawing sperm motility and acrosome integrity.
  • Inseminated does with frozen semen and evaluated embryo recovery and viability.

Main Results:

  • A sucrose-DMSO extender (1.75 M DMSO) significantly improved post-thawing motility (42% +/- 3%).
  • Cryopreserved semen from different rabbit lines showed similar post-thawing motility and normal acrosome rates.
  • Embryo recovery and viability rates from frozen semen were comparable to fresh semen, with 52% live fetuses at 29 days gestation.

Conclusions:

  • The developed sucrose-DMSO extender and freezing protocol provide satisfactory results for rabbit semen cryopreservation.
  • This method is suitable for applications in conservation and genetic improvement programs for rabbits.

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