Purpose of estrus synchronization

• Group females for parturition:

a) decrease labor, decrease calving period

b) reduce calving season

c) More uniform weaning weights.

• Reduce or eliminate estrus detection.
• Needed for artificial insemination

 

Cattle

• Prostaglandins – Regression of CL

o Lutalyse, estrumate

• Progestins – Prevents estrus and ovulation

o CIDR, MGA

o Combined with prostaglandins

• GnRH – Ovulation, terminate follicular wave

o Combined with prostaglandins in Ovsynch