Heat shortens gestation length of fall calvers

Heat shortens gestation length of fall calvers

Glenn Selk

Western Livestock Journal

Each year in late July or August, it is time for an important reminder. Fall calving season will soon be here. In fact, the start of the fall calving season often begins before some producers expect it. The target date for the beginning of fall calving very often is Sept. 1. Most printed gestation tables predict that calving will take place 283 days (some 285 days) after artificial insemination or natural breeding. Cows and heifers that gestate in hot weather will often calve a few days earlier than expected.

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