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Intensity of estrus makes a difference

Wearable animal monitoring technology helps some farms identify when cows are in heat and ready to be inseminated. The data collected from these devices can also highlight differences between cows and their estrus cycles.


Using this data, researchers have shown that the duration and intensity of estrus does make a difference when it comes to getting cows bred. Ronaldo Cerri, a professor at the University of British Columbia, shared the results of a few studies during the December Hoard’s Dairyman webinar.


Researchers found that cows with low estrus intensity have a lower pregnancy rate per artificial insemination (A.I.). On the flip side, cows in these studies with high estrus intensity were consistently 10 to 12 percentage points higher for pregnancy per A.I. “You do have a notable bump in pregnancy per A.I.,” Cerri emphasized.




Abby Bauer

Jan. 10, 2024


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