Preliminary Results of an Ongoing Clinical Trial Evaluating Effects of Treatment of Culture Negative Cases of Clinical Mastitis on Somatic Cell Count and Milk Production

摘要

The majority of the antimicrobial treatments of clinical mastitis (CM) are not targeted based on etiology (Oliveira et al., 2013) which added to an increasing societal concerns about antimicrobial use in dairy farms. On-farm culture (OFC) can help guide treatment decisions based on culture results. Researchers have described the difficulty in justifying antimicrobial treatment in OFC culture-negative cases of CM (Lago et al., 2011). The objective of this paper is to report initial results of an on-going study. Preliminary results of quarter-level somatic cell count (SCC) trends and milk production of treated and non-treated mild and moderate cases of culture-negative CM during a follow-up period of 12 weeks.