Pregnancy Calculator


Calculator instructions:

Calculate the impact on your program.

Enter estimated heat detection rate.

Enter typical conception rate.

Calculate pregnancies.

Estrus Detection Rate
%
Conception Rate
%

Pregnancy Rate: %

Use these study data charts to estimate estrus detection.1

Continuously monitoring for estrus can nearly double pregnancy rates.

  Twice-per-day observation 24-hours-per-day observation
Estrus detection 56% 95%
 
Effect of estrus detection rate on pregnancy rate
Estrus detection (%) 55 65 75 85 95
Conception (%) 70 70 70 70 70
Pregnancy (%) 39 46 53 60 67

More than 500 animals in three studies indicated around half of the cows had heats from 6 p.m. to 6 a.m.

Time of day Cows showing standing estrus
6 am to noon 26%
Noon to 6 pm 18%
6 pm to Midnight 27%
Midnight to 6 am 29%

Use SenseHub Beef to monitor cows 24/7 from your smart phone.

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