Still hesitating about whether to equip your dairy cows with Cow Brushes? In the following section, I will outline five reasons why this investment is well worth it.
1. Cows Need to Groom — And They’ll Destroy Your Facility to Do It
Cows groom themselves instinctively. It regulates body temperature, stimulates blood circulation, and removes parasites.
Without a proper outlet, they rub against walls, fences, stanchions, and water troughs. We’ve seen feed bunks bent, gate latches snapped, and skin injuries from sharp edges.
One German study found that 85–100% of cows use a mechanical brush daily when available. A University of British Columbia study went further: cows pushed a weighted gate to reach a brush with the same effort they used to reach fresh feed.
That’s not a luxury. That’s a biological need going unmet.
2. Cleaner Cows, Fewer Mastitis Cases
Mastitis costs 200–250 per case in discarded milk, vet bills, and lost reproductive performance. A 2009 Cornell University study showed that installing a cow brush cut mastitis incidence by over 30% in second-and-higher lactation cows.
The mechanism is straightforward. Brushes remove dirt and debris from the coat — including the hindquarters and udder area. Cleaner skin means fewer bacteria near the teat end. Fewer bacteria, fewer infections.
But here’s what most farmers miss: brush use also flags sick cows early. Research shows cows with metritis use brushes 50% less than healthy postpartum cows — before clinical symptoms appear. Drop in brush activity? That’s your early warning system.
3. Milk Yield Goes Up — The Numbers Are Clear
Same Cornell study: second-lactation cows with brush access produced roughly 1 kg (2.2 lbs) more milk per day.
A separate Brazilian trial on Jersey-Holstein crosses recorded an increase from 3.49 L/day to 5.24 L/day after brush installation.
The likely reasons? Reduced cortisol. Better blood circulation to the udder. And a more active cow — she walks to the brush, then walks to the feed bunk. More movement, more intake, more milk.
For a 500-cow dairy, 1 kg/cow/day at current commodity prices pays for multiple standard cow brush units in weeks. Not months.
4. Stress Drops and Behavior Improves – The Herd Calms Down
Cows with brush access show lower cortisol, reduced heart rates, and higher heart rate variability — all classic markers of parasympathetic activation.
Behaviorally, the changes are visible. Stereotypic pacing drops. Aggressive encounters decrease. Cows queue for the brush instead of fighting over resources.
Holstein heifers with brushes spend less time inactive and more time feeding. Postpartum cows show faster uterine involution — 70% versus 55% in the control group.
A stressed cow kicks off milking clusters. Avoids the parlor. Holds back milk. A brush won’t fix bad management, but it removes a chronic stressor most operations ignore.
5. One Brush Won’t Cut It — Placement and Ratio Matter
Dominant cows monopolize brushes. That’s a documented fact. If you run 60 cows per pen on a single brush, your submissive animals get zero access.
Research recommends one rotating brush per 50–60 cows, and placement near feed alleys or water points — the high-traffic zones where cows naturally pause.
Rotating brushes outperform stationary ones. Cows prefer them. They groom more thoroughly, especially along the back and tailhead — the spots a fixed brush can’t reach.
We’ve seen operations buy one brush for a 200-cow barn and call it done. Wrong. That’s a photo op, not a welfare investment.
The cheapest cow brush isn’t the one with the lowest price tag — it’s the one your entire herd actually uses.