comparison between two chlorine disinfectants as a post milking teat dip in dairy cows

in order to determine the efficacy of agrisept tablets as a postmilking teat dip 30 holstein cows, at 2 months after parturition were included. subclinical mastitis was determined by analyzing the degrees of shirazma in milk samples at the beginning and the end of the first, second, third and fourth weeks of the study. bacterial culture samples were obtained from milk of all the infected quarters. agrisept was used as a teat dip for right and benzalconium chloride for left quarters throughout the study (one month) and teat skin and its orifice were monitored for teat injuries. the numbers of infected quarters from the two groups at the mentioned times of the study were statistically analyzed with fisher exact and chi-square tests. results showed that degrees of shirazma test in the left and right quarters were significantly lower in agrisept group at the end of first (p