Serological study of bovine herpesvirus type 1 and parainfluenza type 3 in cow farms of Qazvin province based on different ages and seasons

Abstract

The main objective of this study was to estimate the seroprevalence of Bovine herpes virus type 1 and <br />parainfluenza type 3 in a non-vaccinated population cattle in the livestock region of Qazvin province. <br />Totally 504 sera were randomly collected and tested from 8 industrial dairy farms in Qazvin province <br />during March 2010-March 2011. The result of one way analysis of variance was used for the analysis data. <br />Also Tukey Method was employed to detect pair wise differences among the ages determined that there <br />were a significant differences among the average titer in 1 to 3, 1 to 4, 2 to 3 and 2 to 4 year cows (P