Calculate due dates and critical milestones for your herd
-
-
Stop milking and start dry cow therapy.
-
Move to maternity pen and start transition ration (21 days before).
-
Monitor closely for signs of labor.
Welcome to the most advanced Gestation & Due Date Calculator at www.aianimalfeed.com. Accurate pregnancy tracking is the backbone of farm profitability. Knowing the exact due date allows farmers to dry off dairy cows at the right time, prepare maternity pens, prevent difficult births (dystocia), and ensure the newborn receives colostrum within the first hours of life.
This tool uses standard species-specific gestation lengths to calculate your expected calving date (or farrowing/lambing date). It also automatically calculates the dry-off date (60 days before birth) and the close-up date (21 days before birth) for transition feeding.
Whether you are managing cattle, buffalo, sheep, goats, pigs, or horses, our tool provides a complete reproductive calendar. We also support a custom species option for any animal. Our integrated AI reproduction analysis provides actionable advice on calving preparation, colostrum management, and transition diets to ensure a healthy mother and offspring.
The average gestation period for a cow is 283 days (about 9 months and 10 days). However, this can vary slightly based on breed and the sex of the calf (bull calves often go slightly longer).
A dairy cow should be 'dried off' (stop milking) approximately 60 days before her expected calving date. This allows the udder to rest and regenerate for the next lactation.
The close-up period is the last 21 days before calving. During this time, the animal should be moved to a maternity pen and fed a transition ration (higher energy and protein) to prepare the rumen and prevent metabolic diseases after calving.
Yes. While the averages are reliable, heat stress, nutrition, and fetal genetics can cause a cow to calve a few days early or late. Always monitor for signs of labor as the due date approaches.
The calculations provided by this tool are estimates based on standard species averages. Actual gestation lengths vary. Always monitor animals closely as they approach their due date and consult a veterinarian if they go significantly past their due date.