Comparison of the Jackson Uterine Biopsy Forceps with a Fabricated Model of Human Bronchoscopy Biopsy Device for Uterine Biopsy in Bovines

Background: Uterine biopsy is considered as the most conclusive and efficient method for diagnosis of subclinical endometritis especially to evaluate further reproductive efficiency. Methods: The present study was conducted at ULF and FRDS, Mannuthy to compare the efficacy of two devices in obtaining histopathological samples for the diagnosis of subclinical endometritis (SCE) in crossbred dairy cows at 30 and 40 days postpartum. The two devices used were the Jacksons uterine biopsy forceps (Jorvet, USA) and a slimmer stainless-steel biopsy forceps with a circular cupped jaw, fabricated similar to human bronchoscopy biopsy device. Result: The Jacksons uterine biopsy forceps was used in 35 cows to collect the samples. Manoeuvring this forceps through the cervix was found to be difficult and only in 16 out of the 35 animals (45.71%) collection for both days was successful, while in 14 animals (40%) samples could be collected only on day 30 of observation and in remaining 5 animals (14.29%) no samples could be collected on both the days of observation. In those animals where samples could be procured, bigger jaw of the Jacksons forceps resulted in larger sample size which may slightly delay healing. The fabricated biopsy forceps was used in 10 animals and because of its slim structure, it was possible to collect samples in all of them (100%). The smaller jaw ensured that the sample obtained was smaller and thus minimalizing tissue damage, contamination with blood and possibly promoting a swifter healing. Tissue sections were examined for pathological changes in the endometrium involving surface epithelium, lamina propria, endometrial glands and vascular inflammatory status. The samples obtained using the modified forceps provided sufficient data for the diagnosis of SCE similar to the traditional device. Thus, the fabricated uterine biopsy forceps, which is comparatively much cheaper, can be used with more ease in indigenous/crossbred cows and heifers which have smaller cervices.