Vol. 12, Special Issue 12 (2023)

Author(s):
Srikar Reddy, K Chandra Shekar Reddy, K Venkataramana and P Nagaraj

Abstract:
A study was conducted on 24 Sahiwal cows with an objective to compare and evaluate accuracy, sensitivity and specificity of certain early pregnancy diagnostic methods i.e., Transrectal Ultrasonography (TRU), Serum Progesterone Assay (P4 assay) and Pregnancy Associated Glycoprotein (PAG) test on days 24, 28, 35 and 42 of post insemination. Confirmative pregnancy diagnosis was done by Transrectal Palpation on day 60 of post insemination. According to the results it was concluded that TRU is highly effective method for diagnosing early pregnancy as it is a direct method of pregnancy diagnosis in cows. However, serum P4 assay and PAG test could be used more accurately for diagnosing non-pregnant/ open cows at the earliest post insemination.