Quick answer
Bred on April 1, the bovine gestation table gives these due dates: cattle Jan 9, bison Jan 5, yak Dec 19, river buffalo Feb 5 and swamp buffalo Feb 25.
Bovine gestation length table
Before you use the date table, here is the gestation length behind each choice in the menu:
| Bovine species / type | Average gestation | Usual range (days) | Months | Bred Apr 1 → due |
|---|---|---|---|---|
| Domestic cattle, European typeBos taurus | 283 days | 279–287 | 9.3 | Jan 9 |
| Dairy cattle (Holstein, Jersey)Bos taurus | 279 days | 274–284 | 9.2 | Jan 5 |
| Zebu cattle (Brahman)Bos indicus | 292 days | 285–298 | 9.6 | Jan 18 |
| American bisonBison bison | 279 days | 270–293 | 9.2 | Jan 5 |
| YakBos grunniens | 262 days | 257–270 | 8.6 | Dec 19 |
| Water buffalo, river type (Murrah)Bubalus bubalis | 310 days | 305–315 | 10.2 | Feb 5 |
| Water buffalo, swamp typeBubalus bubalis | 330 days | 320–340 | 10.8 | Feb 25 |
Reading the bovine gestation table
Pick the species or breed first. The table redraws itself. Then find the month the animal was bred along the top, run down to the day, and that cell is the due date. Hover or tap a cell for the weekday and year.
Don’t have a breeding date, only a scan result? Then this table won’t help much. Use the bovine gestation calculator instead and enter the days pregnant.
A gestation table for water buffalo
Most printed gestation tables are made for cattle and use 283 days. For buffalo that is a month too short. Choose River buffalo or Swamp buffalo in the menu and print that version instead. The difference between the two types is about three weeks, so it’s worth knowing which you have.
Printing it
Press Print / save as PDF. Only the table prints, on one page. Landscape gives the biggest text. Print one sheet per species if you keep more than one, so nobody reads the cow dates for a buffalo.
Bovine gestation table FAQ
What is a bovine gestation table?
A list of due dates for every possible breeding date, worked out from a species’ average gestation length. You look up the breeding day instead of counting.
Is there a gestation table for buffalo?
Yes. Choose river or swamp water buffalo in the menu above and the whole table switches to that species.
Which bovine species has the longest gestation?
Swamp-type water buffalo, at about 330 days on average. Yak have the shortest, at about 262 days.
Last updated October 21, 2026 · Every date on this page comes from the same data the calculators use.