From the NMC Newsletter
"Udder Topics", September 2004
• High levels of environmental bacteria on bulk tank cultures.
• Excessive numbers of dry cows that have mastitis during the early dry period.
• Excessive numbers (>15-20%) of clinical mastitis cases in early lactation.
• Primarily environmental pathogens isolated from individual cow cultures.
• Increased bulk SCC with low levels of Staphylococcus aureus, Streptococcus
agalactiae, or mycoplasma.
• Cows that have fluctuating SCC over the lactation period.
Source: 2004 NMC Regional Meeting Proceedings, pg. 34 (Bey)