Application of Scoring Systems on Monitoring of Digital Dermatitis in Dairy Cow at a Herd Level in Tehran-Iran

To determine the utility of locomotion, lameness, lesion type, pain response, color and size scoring system as the qualitative indices for assessing the severity and prevalence of "PDD" and evaluating the individual therapeutic effect of hoofgel. Longitudinal field study was conducted on a 750 cows(230 lactating),commercial closed holstein dairy herd in the tehran. These cows treated with topical spray solution of lincomycin HCL in previous year.38 lactating cows considered lame on the basis of locomotion scoring(1-5).Among these cows 17cows were diagnosed with lesions of PDD in different stage of development on the basis of lameness score(0-3)with an average score of 2. Lesion(0- 4)pain(0-2)color(0-3)size(0-3)scores were done prior to application of hoofgel and holding in place by bandage. Treatment repeated in 3turns ...