assisted reproduction in horses

Non-surgical MethodsEmbryo recovery and transferArtifical inseminationTransvaginal oocyte recoveryPregnancy diagnosis

ASSISTED REPRODUCTION INHORSES.

Reproductive Physiology and Embryology

Cattle AdvantagesEquine Advantages

Structure of Industries

What can be learned?

WHAT CAN WE LEARN FROM CATTLE?

Similarities

Differences Differences

Similarities

Differences

- Timing andcourse

- Blastocyst- gets acapsule- Expands faster- IVF is problematic

- Efficacy of superovulation- Efficacy of in vitrofertilization- Injectioncryopreservation ofembryos and sperm- Fewer sperm needed

- Higher toleranceof embryos todonor.recipientasynchrony-Efficacy ofintracytoplasmicsperm injection

- Neither is monlithic- One sex offspring will bemore valuable

Cattle- 1 or 2 cows- donorobjective- to get as manyoffspring as possible perdonor

- Use ofvivo-matured oocytes- Availability of oldermares- Follwing eachmare's reproductivestatus.

- Available sexedsemen, slaughterhouseovaries- More efficientnonsurgical recovery ofmorulae/early blastocysts- Low costs for beed andcare

- Use of bovine oocytes for ICSI ofequine sperm to test fertility - Cloning and somatic cell nucleartransfer

Horses- dozen of donor maresto get 1 or 2 additionaloffspring per donor per year

Differences

- Higher efficacy of super-ovulation protocols-Higher success rates fromcryopressing embryos