“The message is in the milk”
Progesterone is a naturally occurring hormone, found in milk, which precisely corresponds to the natural rhythms associated with a healthy cycling dairy cow.
Use P4Rapid testing to confirm “Cycling” before breeding cows not ready to be bred. For a cow which is cycling normally, this simple test will tell you whether progesterone level is high or low.
Low progesterone (2 lines) = In heat cycle or possibly cystic if testing low over a period of time
High progesterone (1 line) = Not in heat, mid cycle or pregnant.
Why use P4Rapid?
Put a test strip in milk fresh from a cow.
The result is ready to read within the time it takes to milk the cow.
98% accuracy for heat detection.
Detects false riding; if the progesterone is high the cow is not ready to breed. Finds cows that return as early as day 19; if the progesterone is low the cow is potentially cycling. No chemicals, No fuss, No refrigeration needed. Shelf life of 18 months.
Prevent mistimed breedings and increase 1st service conception rate.
- Cost… call for current pricing and volume pricing
- Shipping and handling $3-$6 per kit
- Allow 2-4 days for delivery
How to test
Important! to remember to not cover the RED area with milk.
- Take a milk sample (qtr or combined). Only a ¼” of milk is needed.
- Shake well before test.
- Label the strip with Cow ID and Date to be sure not to mix up results.
- Put enough milk in the vial to cover the short white-tip end of the test strip (below the arrows). Only a ¼” of milk is needed.
- Put the red end into the vial of milk, but keep the milk level below the RED area.
- Leave in 5 minutes (longer is ok).
- Take out strip and read the results.
How to read results
- After 5 minutes (a few extra minutes is fine), take dipstick out of milk. The milk sample can be from a DHIA sample.
- The TEST line is nearest the Red (lower line)
- The CONTROL line (this line confirms the test is working properly) is nearest to the WHITE end (top). This line must appear on each test or the test is no good.
- When there are 2 lines (Test line is dark or equal to the Control line) the cow is cycling or can be cystic but is not pregnant
- When there is only 1 line (Test line not visible) the cow is mid cycle or pregnant. You can test again the next day to compare if you sense she is coming into a heat cycle
- When the Control line is dark and the Test line is very faint she may be starting or ending a cycle. Test again 24 hours later to confirm.
If you suspect the cow is actually pregnant you can send in the same sample to the Lancaster DHIA Lab to have the milk pregnancy test completed. The cow must be at least 35 days bred and 60 DIM.
To order contact your local technician on test-day or call the Lancaster DHIA main office 1-888-202-3442.
For large quantity discounts call Jere High or email Jere@LancasterDHIA.com