Effective removal of equine arteritis virus from stallion semen.

Authors: Morrell J M, Geraghty R M

Journal: Equine veterinary journal

DOI: 10.2746/042516406776866444 PubMed: 16706276Log in to save

Summary

# Editorial Summary: Removal of Equine Arteritis Virus from Stallion Semen Equine arteritis virus poses a significant biosecurity threat in artificial insemination programmes, necessitating reliable methods to produce virus-free semen whilst maintaining sperm viability for breeding purposes. Morrell and Geraghty (2006) investigated whether a two-stage semen processing protocol—combining density gradient centrifugation with swim-up separation—could effectively eliminate EAV whilst preserving sperm quality. Their findings demonstrated that this combined technique successfully removed viral particles from infected semen preparations, offering a practical solution for studs and veterinary practitioners seeking to manage EAV transmission risk without culling seropositive stallions. The methodology is particularly valuable because it integrates established equine embryo transfer technology into semen processing, making adoption relatively straightforward in clinical settings. For breeding programmes and competition venues with strict EAV protocols, this approach provides a validated alternative to abstention from breeding or quarantine procedures, potentially reducing economic losses whilst maintaining herd health standards.

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Practical Takeaways

•Stallion semen can be effectively processed to remove EAV before use in artificial insemination programs, reducing disease transmission risk
•Double processing technique (density gradient centrifugation + swim-up) provides a practical solution for studs working with EAV-positive stallions
•This enables safer breeding programs and protects recipient mares from EAV exposure through contaminated semen

Key Findings

•Double semen processing technique combining density gradient centrifugation and 'swim-up' can produce virus-free sperm preparations
•Current method addresses urgent need for EAV removal from equine semen used in artificial insemination

Conditions Studied

equine arteritis virus (eav) infection in stallion semen

Related References

Diseases of the Reproductive Tract of the Stallion

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