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  • Title: Post-milking teat dip use in dairy herds with high or low somatic cell counts.
    Author: Erskine RJ, Eberhart RJ.
    Journal: J Am Vet Med Assoc; 1991 Dec 15; 199(12):1734-6. PubMed ID: 1813466.
    Abstract:
    Milk samples for bacteriologic culture were submitted from 71 dairy herds, 24 with low somatic cell count (SCC) and 47 with high SCC and high prevalence of subclinical mastitis. At the time of sample submission to the Mastitis Diagnostic Laboratory of Pennsylvania State University, information regarding the herd mastitis control practices was collected. A combined program of post-milking teat dipping (PMTD) and antibiotic treatment of all cows at the start of the nonlactating period was practiced more frequently for herds with low SCC, (P less than 0.001) than for herds with high SCC. Among all herds for which PMTD was practiced, a higher proportion (P less than 0.001) of those for which chlorhexidine-based products were used had low SCC than high SCC. Conversely, a higher proportion of herds for which a dip with an acrylic latex barrier was used had high SCC rather than low SCC (P = 0.002). For herds with high prevalence of subclinical mastitis, and despite a program of PMTD and treatment of all cows at the start of the nonlactating period, a change to a different germicidal teat dip product may be indicated to help reduce prevalence of infection.
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