Hygiene in the Prevention of Udder Infections. VI. Comparative Efficacy of a Teat Dip Under Experimental and Natural Exposure to Mastitis Pathogens

Abstract
Efficacies (reduction of new [cow] intramammary infections) of a bronopol teat dip under experimental exposure to Streptococcus agalactiae and Staphylococcus aureus were 41.7 and 54.4%. Under natural exposure, efficacy was 35.0% (P > .05) against Streptococcus spp. and 50.0% against S. aureus during the 1st 9 mo. of a 12-mo. trial when favorable milking equipment and labor conditions prevailed. Corresponding figures were 20.0 and 13.0% during the last 3 mo. following onset of malfunctioning equipment and deterioration of labor services.