Comparative Evaluation of Early Pregnancy Diagnostic Methods in Dairy Cows

S. Rashmi; A. Sahadev; M. Narayana Swamy; B. M. Ravindranath; C. R. Santhosh; S. Naveen Kumar; B. N. Nagaraja

doi:10.5455/ijlr.20200109120845

Authors

S. Rashmi Professor, Department of Veterinary Gynaecology and Obstetrics, Veterinary College, Hebbal, Bengaluru, Karnataka, INDIA
A. Sahadev Professor and Head, Department of Veterinary Gynaecology and Obstetrics, Veterinary College, Hebbal, Bengaluru, Karnataka, INDIA
M. Narayana Swamy Professor and Head, Department of Veterinary Physiology, Veterinary College, Hebbal, Bengaluru, Karnataka, INDIA
B. M. Ravindranath Associate Professor (I/C), Department of Veterinary Clinical Complex, Veterinary College, Hebbal, Bengaluru, Karnataka, INDIA
C. R. Santhosh Assistant Professor, Department of Veterinary Pharmacology and Toxicology, Veterinary College, Hebbal, Bengaluru, Karnataka, INDIA
S. Naveen Kumar Associate Professor and Head, Department of Animal Genetics and Breeding, Veterinary College, Hebbal, Bengaluru, Karnataka, INDIA
B. N. Nagaraja Professor and Head, Department of Veterinary Surgery and Radiology, Veterinary College, Hebbal, Bengaluru, Karnataka, INDIA

DOI:

https://doi.org/10.5455/ijlr.20200109120845%20%20%20%20%20

Keywords:

Accuracy, Dairy Cows, Early Pregnancy Diagnosis, Embryonic Loss

Abstract

A study was conducted on 50 crossbred cows aged between 1½ to 8 years with an aim of early pregnancy diagnosis and to record embryonic mortality in cows by transrectal ultrasonography, rectal palpation, serum progesterone assay and pregnancy associated glycoprotein (PAG). In the present study, 6.41% embryonic mortality was observed between 28-42 days post-insemination. Ultrasonography was found to be more effective in diagnosing early pregnancy followed by PAG test by day 28, progesterone assay by day 36. However, PAG test was more accurate in diagnosing open cows at the earliest.