Cow Gestation Calculator
Calculate calving date and track cattle pregnancy progress with postpartum interval estimation
Calculate Cow Calving Date
Enter when cow was exposed to bull or artificially inseminated
Leave blank to use today's date
First-time calvers have longer postpartum intervals (65 vs 55 days)
Example Calculation
Typical Cow Gestation Example
Cow breed: Holstein dairy cow
Breeding date: March 3, 2024
Average gestation: 283 days
Expected calving date: December 11, 2024
Calving window: December 7-15, 2024
First calver: No (experienced cow)
Postpartum interval end: February 4, 2025
Calculation
Calving Date = Breeding Date + 283 days
Calving Date = March 3 + 283 days
Calving Date = December 11, 2024
Calving Range: Day 279-287 after breeding
Postpartum End: Calving + 55 days (experienced cow)
Signs of Approaching Calving
Udder Development
2-6 weeks before calving
Udder fills and teats enlarge
Relaxation
2-3 days before calving
Pelvic ligaments relax
Labor Signs
Hours before calving
Restlessness, isolation seeking
Calving Preparation
Prepare clean calving area
Have calving supplies ready
Monitor cow closely in final weeks
Ensure proper nutrition throughout pregnancy
Have veterinary contact information ready
Understanding Cow Gestation
Cattle Gestation Period
The average cow gestation period is 283 days (approximately 9 months and 10 days), but can range from 279 to 287 days. This variation depends on factors like breed, calf size, cow age, and environmental conditions.
Factors Affecting Gestation
- •Male calves tend to have longer gestation periods
- •Larger breeds may carry slightly longer
- •Older cows often calve 10 days later
- •Nutritional status affects gestation length
Postpartum Interval
The postpartum interval is the period after calving when the cow cannot become pregnant again. This recovery period is crucial for the cow's reproductive health and future breeding success.
First-Time Calvers
65-day postpartum interval - longer recovery needed
Experienced Cows
55-day postpartum interval - standard recovery
Important: Proper nutrition and care during pregnancy and postpartum are essential for cow health and successful future breeding.