Walk into most dairy barns and you’ll see the same pattern. High-quality feed. Ventilation systems. Automated milking. All essential.
And then, tucked in a corner — maybe one mechanical brush. If any.
Most farm managers treat the cow brush as optional. A nice-to-have. Something they’ll add “when the budget allows.”
The peer-reviewed research tells a different story. One that most buyers haven’t heard.
Cows Value Brushing as Much as Fresh Feed
In 2018, a team from the University of British Columbia and Warsaw University of Life Sciences published a study in Biology Letters — a journal of The Royal Society.
Their question was simple: how hard will a cow work to access a mechanical brush?
They trained 10 lactating Holstein cows to push a weighted gate to reach one of three things: a mechanical brush, fresh feed (TMR), or an empty space. Then they gradually increased the weight.
The result surprised even the researchers.
Cows pushed just as hard for the brush as they did for fresh feed. Statistically, there was no difference (p = 0.94, p = 0.85). They pushed significantly less for the empty space.
Think about that. In animal behavior science, the effort an animal is willing to exert directly reflects how important that resource is to them. These cows valued brushing at the same level as eating.
The study concluded: “The mechanical brush is a highly valued resource for dairy cows.”
Cow Brush Directly Improves Milk Yield and Udder Health
Does cow comfort translate to production? The data says yes.
A field study by Schukken and Young (2009) examined the effect of mechanical brushes on commercial dairy herds. Their findings:
- Second-lactation cows produced 1 kg more milk per day — a 3.5% increase — in barns equipped with a brush
- Clinical mastitis incidence dropped in second-lactation and higher cows
- Mississippi State University Extension crunched the numbers: treating one case of mastitis costs about $427. If a brush prevents even a couple of cases, it’s already paid for itself.
The reduction in mastitis costs alone justifies the brush installation.
Stress Reduction That Affects the Whole Herd
Grooming is a natural, highly conserved behavior across mammalian species. When cows can’t groom effectively, stress builds.
Research from Wredle et al. (2022) in Frontiers in Neuroscience demonstrated that brushing during milking reduced cortisol levels — the primary stress hormone — in dairy cows. Lower stress correlates directly with:
- Improved immune function
- Better feed conversion efficiency
- Fewer behavioral disorders (stereotypies, aggression)
Beyond the hormones, there’s the mechanical benefit. A cow brush removes loose hair, dirt, and parasites. That means fewer skin irritations and less time spent scratching against gates and posts — which damages both the animal and the infrastructure.
Our cow brushes includes automated rotating, swinging, and stationary models designed to bring these research-backed benefits to any pen layout.
The data is consistent across multiple studies, conducted by independent research groups across different countries and years. Mechanical brushing is not a luxury. It is a resource that cows value equally to feed — and one that pays for itself in production gains and reduced health costs.
If your barn is running without one, the research says you’re leaving both performance and welfare on the table.
At Zhenda Brush, we’ve been manufacturing brushes since 2002. We understand what it takes to build equipment that survives the barn and delivers real results. Let’s talk about what your herd is missing.