Farm & Home Testing Equipment

- Since 1971 -
Best Harvest

Horse and Cow Estrous Detector

*Eligible for FREE USA Shipping, Order TOTAL Must Exceed $300
Additional Info

Determines the most fertile moment for breeding Horses and Cows. Helps you avoid the necessity of multiple breedings, saves valuable time, and reduces expensive veterinary bills.  

Always in Stock, Fast & FREE USA SHIPPING

Compact and fully portable. No prior technical knowledge on the part of the operator is required.


The big, easy-to-grip handle ensures that the instrument is not easily kicked out of the user’s hand and the easy-to-read LCD display makes reading the results more convenient. One or two daily readings over several successive days are recommended for fail-safe detection of estrous.


  • Low-battery indicator. 
  • Powered by a “9V” battery (not included).
  • Includes instruction manual and plastic carry/storage case.
  • Two-Year Warranty