How to Reduce Somatic Cell Count: 8 Milking Routine Fixes That Work

A rising somatic cell count (SCC) is one of the clearest signals that something in your parlor needs attention. High SCC means lost milk, lower quality premiums, and more cows fighting infections you can’t always see. The good news: most of the biggest improvements don’t require new equipment. They come from a consistent, well-executed milking routine.

Below are 8 milking routine fixes we focus on during our on-farm visits across New York. Each one is simple on paper — the challenge is getting every milker to do it the same way, every shift.

Why Somatic Cell Count Matters

Somatic cells are mostly white blood cells that the cow sends to the udder to fight infection. The more infection (clinical or subclinical mastitis), the higher the count. In the U.S., the legal upper limit for Grade A milk is 750,000 cells/mL, but most processors pay quality premiums well below that, and many herds aim for a bulk tank SCC of 200,000 cells/mL or less. Every step down that ladder usually means healthier udders and more milk in the tank.

8 Milking Routine Fixes to Lower SCC

1. Forestrip every quarter — and actually look

The National Mastitis Council recommends stripping three to four streams of milk from each teat before milking. Forestripping does two jobs: it stimulates milk letdown and it lets the milker spot abnormal milk (flakes, clots, watery milk) early. If milkers strip onto the floor without looking, you lose the detection benefit. A strip cup or dark surface makes changes easier to see.

2. Give pre-dip enough contact time

Pre-dip only works if it stays on the teat long enough to kill bacteria. NMC guidance is about 30 seconds of contact time before wiping. When crews are rushing, this is often the first step to get shortened — and one of the most important to protect.

3. Wipe with one clean towel per cow

Teats should be completely clean and dry before the unit goes on, with special attention to the teat end. Use one towel per cow — never share towels between cows — and make sure cloth towels are laundered at high temperature and dried completely.

4. Get the prep lag time right

Prep lag time is the time from the first touch (stimulation) to attaching the milking unit. Recommendations from NMC and University of Minnesota Extension place it at 60 to 120 seconds, with about 10 to 20 seconds of stimulation. Attach too early and the cow hasn’t let down her milk; attach too late and you miss the peak of oxytocin. Both lead to longer unit-on time, more teat-end stress, and more risk of infection.

5. Attach and align units correctly

Units should hang evenly under the udder without twisting, and air slips during attachment should be kept to a minimum. Poor alignment causes uneven milk-out, liner slips, and squawks that can push bacteria toward the teat end. A quick adjustment of hoses and support arms often fixes this.

6. Avoid over-milking

Most cows milk out in about four to eight minutes once letdown is complete. Leaving units on after milk flow drops damages teat ends, and damaged teat ends are more likely to become infected. Check that automatic take-off settings fit your herd and that milkers aren’t manually overriding them.

7. Post-dip the entire teat, every time

Post-milking teat disinfection is one of the most effective mastitis tools available — industry sources estimate it cuts new infection rates by roughly 50%. The key is coverage: the entire teat must be covered right after the unit comes off. Spot-checking a few cows per shift is a quick way to catch gaps.

8. Keep liners, gloves, and milking order in check

• Change liners on schedule. Follow the manufacturer’s recommended number of milkings (or about six months, whichever comes first). Worn liners milk poorly, and a contaminated liner can spread Staphylococcus aureus to the next six to eight cows.
• Wear clean gloves and disinfect or change them often during milking.
• Milk high-SCC and infected cows last, or in a separate group, to avoid spreading bacteria through the herd.

Consistency Is the Real Fix

Most dairies already know these steps. What we see on farms is drift: a new milker learns a shortcut, a busy shift skips pre-dip contact time, and over a few weeks the routine changes without anyone deciding to change it. That’s why SCC often creeps up slowly — and why it usually takes months of consistent work to bring it back down. Monthly SCC tests and bulk tank cultures help you catch the trend early and see which cows and pathogens are driving it.

Keeping everyone on the same page is easier when training happens in the language each milker understands best, and when the reasons behind each step are explained — not just the steps themselves.

Get an Expert Look at Your Milking Routine

If your SCC is climbing or stuck, a fresh set of eyes in the parlor can pinpoint what’s changed. Our Milking Routine Evaluation reviews parlor flow, milker technique, equipment function, and cow prep, and gives you a clear report with specific recommendations. We can follow up with bilingual Milkers Training so every shift milks the same way.

Not sure where to start? Begin with our free Online Diagnosis on the Plans & Pricing page, or contact us to talk about your farm.

References

• National Mastitis Council, Recommended Milking Procedures
• University of Minnesota Extension, Timing the milking procedure
• Dairy Herd Management, 5 Steps to Reduce Somatic Cell Count in Milk
• Hoard’s Dairyman, Somatic cell legal limit will stay the same