Related Experiment Videos
A procedure for Poitou jackass sperm cryopreservation
A Trimeche1, P Renard, D Tainturier
1Laboratoire de Pathologie de la Reproduction Ecole Nationale Vétérinaire de Nantes, France.
Theriogenology
|March 29, 2000
Summary
Sperm banking for endangered Poitou donkeys is now possible using a specialized T2-94 medium. Removing glycerol before artificial insemination (AI) is crucial for successful cryopreservation and pregnancy outcomes.
Area of Science:
- Veterinary Reproduction
- Conservation Biology
- Animal Genetics
Background:
- Sperm cryopreservation is vital for preserving genetic diversity in endangered species.
- No established cryopreservation protocols existed for Poitou donkey spermatozoa.
Purpose of the Study:
- To develop and evaluate a cryopreservation medium and procedure for Poitou jackass semen.
- To assess the viability and fertility of cryopreserved Poitou donkey sperm.
Main Methods:
- Developed T2-94 medium with glutamine, quail egg yolk, and glycerol.
- Evaluated sperm motility, membrane integrity (acridine orange, FITC-PSA, hypo-osmotic swelling test), and velocity (ATS-M).
- Performed artificial insemination (AI) with frozen-thawed semen, with and without glycerol removal.
Main Results:
- T2-94 medium significantly improved post-thaw sperm motility and velocity.
- The medium maintained sperm nuclear, acrosomal, and plasma membrane integrity.
- Pregnancies and foals were achieved only when glycerol was removed before AI.
Conclusions:
- Cryopreservation of Poitou jackass semen is feasible using T2-94 medium.
- Glycerol removal post-thaw and pre-AI is essential for successful artificial insemination and pregnancy in Poitou donkeys.