Total bacterial count and somatic cell count in refrigerated raw milk stored in communal tanks

Abstract

SummaryThe current industry demand for dairy products with extended shelf life has resulted in new challenges for milk quality maintenance. The processing of milk with high bacterial counts compromises the quality and performance of industrial products. The study aimed to evaluate the total bacteria counts (TBC) and somatic cell count (SCC) in 768 samples of refrigerated raw milk, from 32 communal tanks. Samples were collected in the fi rst quarter of 2010, 2011, 2012 and 2013 and analyzed by the Laboratory of Milk Quality -LQL. Results showed that 62.5%, 37.5%, 15.6% and 27.1% of the means for TBC in 2010, 2011, 2012 and 2013, respectively, were above the values established by legislation. However, we observed a signifi cant reduction in the levels of total bacterial count (TBC) in the studied periods. For somatic cell count, 100% of the means indicated values below 600.000 cells/mL, complying with the actual Brazilian legislation. The values found for the somatic cell count suggests the adoption of effective measures for the sanitary control of the herd. However, the results must be considered with caution as it highlights the need for quality improvements of the raw material until it achieves reliable results effectively.

Blitz therapy in control of Streptococcus agalactiae subclinical mastitis in dairy cows reduces somatic cells count of bulk milk tank in a dairy cattle herd

“…The reduction of total bacterial count (TBC) and SCC has become a common goal since the implementation of programs to improve milk quality and the need of dairy industries of high milk quality (BRASIL, 2012;ALVES et al, 2014). In this context, the subclinical mastitis treatment during the lactation can be considered an alternative in herds with high prevalence of S.agalactiae infection (TYLER et al, 1992;REYES et al, 2015).…”