Mastering AI Windows & Calving Interval Management
Maintain optimal 12-to-13 month calving intervals through disciplined heat detection and automated insemination logs.
Kevin Mwangi•Published on 15 Jul 2026•4 min read
Introduction
Shortening open days directly impacts annual farm profitability. Timely Artificial Insemination (AI) combined with accurate pregnancy diagnosis ensures continuous herd turnover.
Phases of the Reproductive Cycle
Monitoring heat cycles, voluntary waiting periods, and dry-off dates guarantees every cow returns to peak production efficiently.
Herd Classifications & Groups:
- Voluntary Waiting Period (VWP) — 45–60 days post-calving recovery window.
- Standing Heat Window — Optimal 12-hour insemination window following standing heat.
- Pregnancy Confirmation — Ultrasound or palpation check at 30–45 days post-AI.
"A cow open beyond 120 days costs the farm money every single day in lost lactation capacity."
— Kevin Mwangi, Herd Operations Lead
Conclusion
Strict tracking of reproduction events ensures predictable replacement heifer counts and steady farm income.
