Investigation of Infection and Its Correlation with Dairy Herd Improvement Data from a Dairy Farm in Central China.

(), an alga that has attracted considerable attention over the years as a causative microorganism of mastitis in dairy cows, exhibits limited susceptibility to specific aminoglycosides and antifungal agents, and no effective clinical treatment is currently available, thereby posing challenges for both prevention and treatment. To investigate the infection of mastitis and its impact on raw milk production, a total of 348 raw milk samples were collected from August to December 2022 from a dairy farm in central China. and other bacteria were detected, and the average infection rate of in raw milk was 60.34% (210/348). The total number of colonies and the somatic cell count (SCC) of positive samples were significantly higher than those of negative samples ( < 0.01). The daily milk yield, 305-day milk yield, peak milk yield, and days to peak milk yield of the positive samples were significantly lower than those of negative samples ( < 0.01). A correlation analysis showed that infection was negatively correlated with daily milk yield, 305-day milk yield, peak milk yield, and days to peak milk yield ( < 0.0001), while being positively correlated with the total number of colonies, SCC, milk loss, and protein percentage ( < 0.0001). These findings may help practitioners in comprehending the occurrence of mastitis and developing more effective strategies for the prevention of infections.