ANSC 3180 Lecture Notes - Lecture 9: Menstrual Synchrony, Embryo Transfer, Artificial Insemination

• School: University of Guelph
• Department: Animal Science
• Course: ANSC 3180
• Professor: Esther Finegan

Document Summary

Embryo transfer- an assisted reproduction technology (art) that provides a means for reproductive and genetic enhancement. Requires collection of pre-attachment embryos from donor female followed by transfer into recipient female. Commercial bovine embryo transfer industry emerged in na in 1970s and facilitated expansion of valuable european breeds of cattle imported into ca. Extensively used in cattle and to a lesser degree in small ruminants and horses. Estimated 150000 potential ova in the cow. Only fraction of reproductive potential realized (average cow will have 1 calf per year; 8- Billions of sperm produced by each male over reproductive lifetime (average male will sire 15-50 calves per year) Increase reproductive lifespan of a desirable animal by eliminating stress of parturition. Fsh (use twice a day (short half life)) Ecg (40hr half life, don"t need to inject twice a day) Flush embryo at day 7 after ai. Synchronize a lot of recipients to get. Use semen that is from genetically superior bulls.