Well, in the past the easiest way for cattle pregnancy testing is rectal palpation, but now things all changed. The newest easiest way for cattle pregnancy testing will be using a whole blood rapid pregnancy test kit.
Rectal palpation, which involves inserting a hand and arm into the rectum of the cow or heifer and feeling the fetus physically, is an old traditional way of pregnancy testing in large animals. This method can detect pregnancy as early as 35-45 days after breeding, and it gives immediate results. However, this method requires an experienced practitioner, and it can be invasive and stressful for the animals. Sometimes it even causes embryo loss and abortion. Normally in big and modern farms, it is rarely used.
The newest easiest way for cattle pregnancy testing will be using a whole blood rapid pregnancy test kit. The kit is based on detection of a pregnancy associated protein, which is known as PAG and will be present in the blood of pregnancy cows. It is quite sensitive and accurate according to research publications and commercial products field testing. Ringbio cow pregnancy rapid test kit is an excellent example of this kind of test kits, which produces the highest accuracy for open cows at 99.5%, and the cost is even less than 2 – 5 USD per testing.
More information can be found here,