Vaginal mucus resistivity and intenseness of vulva discharge: Dis-Uniformity in trends had zero effect on conception following multiple insemination in Ovsynchtreated Bunaji Cows

Abstract

Vaginal mucus resistivity (VMR) and intenseness of vulva discharge (IVD) in 28 Bunaji cows subjected to multiple inseminations at 8th and 16th  hours following ovulation synchronization were investigated. Cows were fed silage and crushed elephant grass with clean water provided ad libitum. The VMR and IVD were evaluated using Draminski® bovine estrous probe and visual observation, respectively. The difference between the  total mean VMR (Ohms) at 8th and 16th hours (358.88±239.15 and 343.88± 30.04) was not significant (P>0.05). During 8th to 16th -hour, 60% and 40% of cows showed rising and declining VMR values, respectively. At the 8th and 16th hours, 60% and 40% of the cows had mean VMR that was lower and higher than the total hour-mean values, respectively. At these same hours, 28.57% and 28.57%, 71.43% and 42.86% as well as 0% and  28.57% of cows had copious, moderate and scant vulva discharges, respectively. All cows were positive for 30-day nonreturn to estrus, caruncular enlargements as well as fetal parts were also palpable at 90-day pregnancy check. We conclude that though, dis-uniformity occurred in vaginal  mucus resistivity as well as intenseness of vulva discharge trends between inseminations at the 8th and 16th hours following Ovsynch treatment, this had zero effect on conception and pregnancy establishment in the cows.

Keywords: Vaginal mucus resistivity, vulva discharge, dis-uniformity, insemination, Ovsynch, Bunaji cows.