Investigation on plasma cortisol concentrations after inserting ProB in cow vagina

Abstract

ProB “made in Viet Nam” is a intra-vaginal progesterone device. It is used to replace the imported CIDR and PRID, to treat the ovarian function disorders in cattle. This study aimed at determining the plasma cortisol concentration when inserting ProB into cow vagina. The blood samples were collected continuously in 7 days in the morning before and during insertion of ProB in the experimental cows, then plasma cortisol concentration was determined by ELISA. During inserting ProB into the cattle vagina, mean plasma cortisol concentration was less than 5 ng/ml which was similar to the mean plasma cortisol concentration before insertion of ProB. These cortisol concentrations were not statistically significant difference (P>0.05). Therefore, insertion of ProB into the vagina did not cause stress for the cows.