What every dairy should know before starting a rotary parlor

ST. CHARLES, Ill. — Installing a rotary parlor is a major investment for any dairy and the startup phase is pivotal for a smooth transition and long-term efficiency.

With proper preparation, training and clear expectations, a new parlor can begin strong from the very first turn.

“A rotary startup impacts everything: cow flow, employee confidence, even the pace you’ll be able to achieve months down the road,” said Andy Lenkaitis, senior manager of herd management with GEA. “A strong start begins well before the first cow steps on the platform.”

From planning through the first week of milking, here are four key tips to start your rotary parlor the right way.

1. Plan early and communicate often.

A rotary parlor requires careful coordination among contractors, installers, herd managers and technology partners. Early communication helps ensure the facility reflects your long-term goals.

“If you plan to administer vaccines on the rotary with a vet deck or integrate automation equipment at a later time, those details need to be shared before construction begins,” Lenkaitis said. “It’s always easier to build the right solution up front than to retrofit later.”

Also consider cow logistics. Adding cows may require new barns or expansion, which can shift timelines.

Weather and labor availability can also affect scheduling, especially with large construction projects. Flexibility is essential. Be prepared to adjust target milking dates.

2. Prepare your people — and cows — for success.

Startup success depends on a confident, well-trained team. Operators, cow pushers and managers must be comfortable with new workflows, cow preparation steps and safety protocols before cows ever enter the parlor.

“Cow handling looks different on a rotary,” Lenkaitis said. “Your team needs time to learn the flow, practice low-stress movement and understand how their timing affects efficiency.”

During commissioning — typically two to three weeks before the first milking — the rotary is tested for proper rotation, wash performance and equipment function.

This is also the best time to ensure third-party systems, such as activity monitoring or herd management software, are aligned and ready.

Slow, calm cow introductions are key. Natural calming aids, such as FerAppease, and experienced cow pushers can help make the first few rides smooth for cows and people.

3. Set realistic expectations for the first week.

An intentional first week sets the tone for long-term rotary performance. Starting on a Tuesday morning is ideal, giving teams several days to adjust before the weekend.

During the first milking, expect to milk the equivalent of 1.5 to 2 full rotaries per hour. Load half pens instead of full pens to reduce cow wait time and keep cows on the deck for no longer than 30 minutes.

Start with 2-year-olds, who tend to adapt more quickly. Then move to higher-producing and late-lactation groups.

“Within three or four milkings, most cows learn the routine,” Lenkaitis said. “They start entering smoothly, lining up correctly and helping the whole system move faster.”

Lenkaitis advises holding off on adding partial automation — such as prep brushes or post-dip sprayers — for the first few weeks.

Allowing cows to settle into their new routine before too many new items are introduced supports calm behavior and protects worker safety.

4. Measure performance early to keep improving.

Strong rotary performance is measurable from the start. Key indicators include milking time, rotary turn time and holding-area duration.

“The software that comes with rotary parlors gives you incredibly helpful data,” Lenkaitis said. “Your dealer can help you interpret those initial numbers and identify small adjustments that make a big impact.”

Consistent deck speed, minimal stops and efficient cow movement are early signs that your parlor is on the right track.

Made In The USA

With demand for rotary equipment growing and supply chains still unpredictable, many producers place a high value on American-made equipment.

GEA’s DairyRotor platforms are the only rotary milking structures manufactured in the United States, built at the company’s long-standing facility in Galesville in western Wisconsin.

That reliability matters to producers like Jan Henderson, general manager at Alliance Dairies, who recently started milking in twin 80-stall GEA T8900 rotary parlors in Florida.

“With the disruption from COVID-19, tariffs and uncertainty overseas, we were relieved to find out a lot of GEA’s parlor manufacturing was going to be done in Wisconsin. Of the things that kept me up at night, I was able to mark that one off my list,” she said.