Using of progesterone field test (on farm)‎ as a tool for early detection of pregnancy in dairy farms

Abstract EN

The present study was carried on a herd of Friesian cows Belongs to EL-Salhya Company for Investment and Development (Dairy cattle breeding farm number 2), El-Salhya City- Sharkia Province.

This study aimed to use of progesterone field test (on farm) in milk (for dairy cows) and plasma (for heifers) as a tool for early detection of pregnancy or detecting open cows in dairy farm 19-24 day after Artificial Insemination.

The sensitivity, specificity, positive predictive value, negative predictive value and accuracy percentages of plasma progesterone field test (on farm) were 81.81, 88.88, 90, 80 and 85, respectively, while the sensitivity, specificity, positive predictive value, negative predictive value and accuracy percentages of milk progesterone field test (on farm) were 83.33, 85.71, 71.42, 92.30 and 85, respectively.

The ability of plasma progesterone field test and milk progesterone field test to detect pregnancy was lower than the ability to detect non pregnancy.

There was no significant difference between plasma progesterone field test and milk progesterone field test with the rectal palpation results which mean that plasma progesterone field test and milk progesterone field test can be used as an early indicator of pregnancy and non-pregnancy in the heifers and cows.