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Bluetongue virus and embryo transfer in cattle
Progress in Clinical and Biological Research
|January 1, 1985
Summary
Bluetongue virus (BTV) was not transmitted from infected cattle embryos to recipients during standard embryo transfer procedures. This study found no evidence of BTV transmission, suggesting low risk for cattle health.
Area of Science:
- Veterinary Virology
- Embryo Transfer Technology
- Infectious Disease Transmission
Background:
- Bluetongue virus (BTV) poses a significant threat to cattle health and international trade.
- The potential for BTV transmission via embryo transfer is a critical concern for disease control.
Purpose of the Study:
- To investigate the risk of bluetongue virus (BTV) transmission from infected cattle donors to recipient cattle through non-surgical embryo transfer.
Main Methods:
- Embryos were nonsurgically recovered from BTV-infected cattle donors.
- Embryos were transferred to seronegative, uninfected recipient cattle.
- Donor blood and embryo recovery medium were tested for BTV.
- Recipient blood was monitored for seroconversion post-transfer.
Main Results:
- High BTV titers were detected in donor blood and recovery medium.
- BTV was not isolated from any recipient cattle.
- No recipient cattle seroconverted within 60 days of embryo transfer.
- No evidence of BTV transmission to the early embryo was found.
Conclusions:
- Standard cattle embryo transfer procedures do not appear to transmit bluetongue virus.
- The risk of BTV transmission via embryo transfer under these conditions is considered unlikely.
- This finding supports the continued use of embryo transfer in BTV-affected regions with appropriate biosecurity measures.