Related Experiment Videos
Recent developments in embryo sexing and its field application
1Finnish Animal Breeding Association, Vantaa, Finland. pete@mloy.fi
Reproduction, Nutrition, Development
|February 5, 1999
Summary
New developments in bovine embryo sexing using polymerase chain reaction (PCR) simplify biopsy techniques and improve detection methods. These advancements enhance accuracy and efficiency in determining embryo sex for commercial applications.
Area of Science:
- Reproductive Biology
- Molecular Biology
- Embryology
Background:
- Polymerase chain reaction (PCR) sexing is crucial for commercial bovine embryo applications.
- Traditional methods face challenges with deoxyribonucleic acid (DNA) contamination and complex procedures.
Purpose of the Study:
- To review recent advancements in PCR sexing of bovine embryos.
- To highlight improvements in biopsy techniques and detection systems.
Main Methods:
- Simplification of embryo biopsy using protein-free medium or dish scratches for single microinstrument use.
- Comparison of traditional electrophoresis-based PCR sexing with non-electrophoretic fluorescence-based detection.
- Evaluation of pregnancy rates in relation to embryo grade and cryopreservation status.
Main Results:
- Non-electrophoretic methods effectively avoid DNA contamination, improving accuracy.
- Both traditional and non-electrophoretic methods achieve approximately 95% accuracy.
- High pregnancy rates (50-70%) are achievable with Grade 1 embryos; Grade 2 embryos show lower rates.
- Frozen-thawed biopsied Grade 1 embryos yield pregnancy rates around 50%.
Conclusions:
- Recent innovations in biopsy, detection, and freezing enhance PCR sexing viability.
- Improved techniques and systems are expected to boost commercial interest in bovine embryo sexing.