Estrus & Insemination Calendar
Estrus cycle tracking and optimal insemination timing
What Does This Tool Do?
The Estrus & Insemination Calendar tracks your livestock's estrus cycle to calculate the optimal insemination time.
Provides scientific guidance on estrus signs, synchronization protocols, and insemination timing for cattle, sheep, and goats.
Frequently Asked Questions
The estrus cycle in cows averages 21 days (range 18-24 days). Estrus duration is 12-18 hours. Ovulation occurs 10-12 hours after end of estrus. Per the AM/PM rule, if estrus is observed in the morning, inseminate in the evening; if observed in the evening, inseminate the next morning.
The best insemination time is 12-18 hours after observing estrus signs. Standing reflex is the most reliable estrus indicator. Increased activity, mucus discharge, and decreased appetite are other signs. Synchronization protocols (OvSynch, CIDR) allow more controlled timing.
Sheep are seasonal polyestrous animals. The natural breeding season is August-January (short-day period). The estrus cycle is 16-17 days. Light programs or hormone protocols can be used for out-of-season production.