How to Use Cow Pregnancy Calculator Tool ?

The Cow Pregnancy Calculator tool helps you determine when your cow or buffalo is due to calve in a few easy steps. You can calculate from the last breeding date. Let’s take you step-by-step.

Note : Note:- If you want to calculate the gestation period of a cow, then use our Goat Pregnancy Calculator tool to do it.

Step 1: Enter Last Breeding Date
Enter the last breeding date of your cow or buffalo (Date Format MM/DD/YEAR).

Step 2: Select Animal Type
If you want to calculate the pregnancy of a cow, select “Cow” or “Buffalo.” If you want to calculate the pregnancy of a buffalo, select “Buffalo.”

Example: I have a cow whose last breeding date is 05/29/2025, and I want to know when my cow will calve?

Result: Expected Calving Date: Sun/Mar 08 2026
Days Pregnant: 168 days
Pregnancy Stage: Second Trimester

What is a cow pregnancy calculator tool?

This is a tool that allows you to calculate the calving time of your cow or buffalo, giving you an idea so you can plan in advance.

How long is a cow and buffalo pregnant in months?

Cow: A cow’s pregnancy period is approximately 9 months, and a cow’s pregnancy period is 283 days, and humans’ pregnancy period is approximately the same length. But the pregnancy period of a cow can be a little less or more depending on different breeds of cows. Cows can get pregnant only once in a year because the gestation period of a cow is 283 days which is approximately 9 months and it takes 40-60 days for the cow to recover, so it takes a full 1 year.

Buffalo: The gestation period of a buffalo is 310 days. The gestation period of a buffalo is a little longer in comparison to a cow. A buffalo can only get pregnant once a year because, as you know, the gestation period of a buffalo is 310 days, which is equivalent to approximately 10 months. Add 40-60 days for the buffalo to recover, making it a total of 1 year.

Cow and Buffalo Pregnancy Stages Details

Cow Pregnancy Stages Details :-

First Trimester (1-90 days)

• Embryo development
• Pregnancy confirmation possible after 45 days
• Nutritional requirements increase

Second Trimester (91-180 days)

• Rapid fetal growth
• Visible physical changes
• Ultrasound examination possible

Third Trimester (181-283 days)

• Final fetal development
• Udder development
• Preparation for calving

Buffalo Pregnancy Stages Details

First Trimester (1-90 days)

• Fertilization and early embryo formation
• Organ development begins, placenta formation
• Skeletal system development, fetus reaches 15-20 cm

Second Trimester (91-180 days)

• Fetal movements can be detected, udder begins to develop.
• Hair growth on fetus, increased fetal activity
• Rapid fetal growth, slight abdominal enlargement visible

Third Trimester (181-310 days)

• Accelerated fetal growth, obvious abdominal enlargement
• Udder development complete, milk may appear
• Fetal movements decrease, pelvic relaxation begins
• Final preparation for calving

Cow Pregnancy Care Tips – Complete Guide

Nutrition Management During Pregnancy:-

First Trimester (1-90 days)

• Balanced Diet: Increase normal feed by 10-15%
• Protein: 14-16% protein-rich diet
• Calcium: Adequate calcium for bone development
• Phosphorus: Balanced with calcium (2:1 ratio)
• Green Fodder: 25-30 kg daily of fresh green fodder
• Dry Matter: 2.5-3% of body weight

Second Trimester (91-180 days)

• Increased Nutrition: 25-30% more feed than maintenance
• Energy Rich Feed: Add 1-2 kg concentrates daily
• Minerals: Calcium, phosphorus, magnesium supplements
• Vitamins: Vitamin A, D, E supplements crucial
• Water: 50-60 liters clean water daily

Third Trimester (181-283/310 days)

• High Energy Diet: 35-40% increase in feed
• Concentrates: 2-3 kg concentrates daily
• Calcium Boost: Extra calcium for fetal skeleton
• Small Frequent Meals: 3-4 meals daily instead of 2 large ones
• Avoid Moldy Feed: Prevent abortions and complications