Why there are quite few urine early pregnancy test kit for cow?

Unlike human, pregnant cows do not produce the hormone HCG, which makes it impossible to use a human urine early pregnancy test kit for cow testing.

Pregnancy test - Wikipedia

Reliable Dog Pregnancy Test for Easy Home Use

Higoodz Bovine Cow Rapid Early Pregnant Pregnancy Test Kit Pregnancy Test Card For Dairy Cow Livestock,Pregnancy Test Kit For Cattle,Cattle Farm Equipment

Pregnancy Test Strips

B Vijay Kumar on LinkedIn: #anieasy #bovinepregnancytestkit #dairyfarming #reproductivemanagement…

Pregnancy Test Timeline - Office of NIH History and Stetten Museum

Buy Cow Pregnancy Test Strips, Early Result Pregnancy Test Reliable and Quick Early Detection of Pregnancy, 25 MLU/mL Can Be Detected Within 5

Cow Pregnancy Test Strips, Early Result Pregnancy Test Reliable and Quick Early Detection of Pregnancy, 25 MLU/mL Can Be Detected Within 5 Minutes

Pregnancy test - Wikiwand

Specific considerations for pregnant vets and their employers - Veterinary Woman

animal pregnancy rapid testing FAQs

A simple, inexpensive and portable on-farm test for pregnancy diagnosis and ovary status in cows via chemical analysis of urine - ScienceDirect

IDEXX Rapid Visual Pregnancy Test – Animal Health Express

Early Result Pregnancy Test

Feeling pregnant but tests showing negative? Here are five possible reasons behind it - Times of India