If you want to know what it takes to milk cows in the unrelenting heat of the Southwest, Denton Ross will tell you it requires a distinct blend of resilience, resourcefulness and a willingness to do things a little differently.
Speaking to a room of producers at the 2026 High Grounds Dairy Conference in Chicago — having just left behind 110-degree temperatures in his home state — Ross laid out the realities of running a dairy in a region where water is a battleground and shade is a premium. As an owner and manager of the family-run Arizona Dairy Company, Ross represents a shrinking demographic. Today, there are fewer than 40 dairy producers left in the state of Arizona. But for the Ross family, farming in the desert isn’t just a business; it is a five-generation legacy.
Their story began during the Great Depression when the family started farming cotton and alfalfa in the Phoenix area. After World War II, Ross’s grandfather took the keys to the farm, steadily growing the operation until 1973, when the family realized they were producing so much feed that they might as well get some cows to eat it. That year, Arizona Dairy Company was officially born.
By 1980, amid 20% interest rates and runaway inflation, the family made the bold decision to double in size. They eventually peaked at an immense 6,000-cow herd.
“I like to say our dairy was kind of big dairy before big dairies were cool,” Ross joked. But over time, Ross’s management philosophy began to shift away from sheer scale and toward absolute optimization.
The Great Migration and the Power of Downsizing
Four years ago, an opportunity arose that would fundamentally change the trajectory of Arizona Dairy Company: a facility half the size of their current operation went up for sale in Gila Bend.
“If you ever have the chance to help out moving a dairy, I would highly suggest you do not do that,” Ross cautioned the crowd with a laugh. “Imagine moving your house times a million. We did that four years ago.”
The move wasn’t just a change of scenery; it was a strategic downsizing. The family deliberately reduced their milking herd from 6,000 cows to 3,000. For Ross, the goal was simple but profound: “I’ve always wanted to milk fewer cows and do it more efficiently and just see how much we could really get out of a cow.”
Today, the Gila Bend operation features open-sided barns equipped with fans and misters to combat the punishing dry heat. It is a stark contrast to the enclosed, cross-ventilated barns of the Midwest, but it is precisely what is needed to keep a desert herd comfortable and productive.
Water, Forage and the Desert Climate
You cannot farm in Arizona without talking about water. Quoting an old western adage, Ross noted, “Whiskey’s for drinking, water’s for fighting and we’ll be fighting about water in Arizona probably for everybody’s lifetime.”
Fortunately, Arizona Dairy Company does not rely on the highly contested Colorado River for its water supply, sheltering them from some of the region’s most intense water politics. Instead, they rely on groundwater. While the water is abundant, it comes with its own set of challenges, specifically high salinity.
“One of the things that you do with bad water is you use more of it,” Ross explained.
Every drop is maximized. The vast amounts of water used to cool the cows through the misting systems are captured in a basin and subsequently pumped out to irrigate the farm’s 6,000 acres of row crops.
Growing feed in an arid climate is a constant balancing act. The farm successfully grows large volumes of forage, but Ross is candid about the ongoing battle for nutritional excellence.
“We can grow a lot of forage, and we can grow a lot of average forage,” he admitted. But because a high-producing cow requires exceptional nutrition, the farm’s agronomic focus is hyper-targeted on elevating the quality of their home-grown feed, particularly the corn silage they chop each year under the blistering sun.
A Hyper-Focus on Elite Genetics
If downsizing was the first step toward peak efficiency, genetic advancement is the engine driving it forward. This initiative is spearheaded by the next generation — Ross’s daughter, who returned to the farm with a passion for breeding.
The dairy runs its own in-house In Vitro Fertilization lab. Every other week, they perform ultrasound-guided ovum pick-up on their most elite female heifers. By taking oocytes exclusively from the top 2% to 3% of their heifers, Arizona Dairy Company ensures that all herd replacements come from the absolute highest-end genetics available.
It wasn’t always a smooth process. Ross recalled the early days of their embryo program when they transferred seven embryos and yielded three calves — a success rate he was thrilled with at the time. Unfortunately, one was born deformed, and another — spooked by a passing truck — caught its leg in a fence and broke it.
“One embryo calf later, and we’re like, ‘Wow, this is fun. We should really keep doing this,’” Ross laughed. But they persevered. “Because we like good cows, and it takes nine months to make a good one or a bad one... we figured we might as well make as many good ones as we can.”
Culture, Data and Protecting the Farm’s Value
Beyond genetics and climate control, Ross attributes the dairy’s endurance to two highly managed resources: its people and its data.
With 75 employees on the payroll, Ross dedicates a massive portion of his time to workforce management and fostering a positive farm culture. He understands that a well-cared-for employee directly translates to a well-cared-for cow. Pointing to a photo during his presentation, he highlighted Luis, an employee who started milking for the family as a young man and has remained with the farm for over 40 years.
Simultaneously, the farm is navigating the modern digital landscape. Between herd management software, feed tracking, and health monitoring collars, the dairy generates an overwhelming amount of data. To make this information actionable, the team has built custom dashboards that visualize the metrics, allowing them to make rapid, informed decisions on individual cows and entire pens.
But Ross is fiercely protective of this digital asset.
“It takes a lot of money to get that data, and so we feel like there’s value in it,” he noted, expressing frustration at outside companies attempting to extrapolate farm data without compensating the producer.
Passing the Torch
As Ross looks across the 6,000 acres of farmland and the 3,000 cows resting under the misters, he is already looking toward the future. Succession is famously difficult in agriculture, but the sixth generation is already deeply embedded in the operation. With his son managing the row crops, his daughter running the dairy genetics and grandchildren already running around the farm, the legacy is secure.
Arizona Dairy Company may have shrunk its footprint, but by focusing on efficiency, empowering its workforce, and aggressively pursuing genetic excellence, Denton Ross has ensured that his family’s farm will continue to thrive in the desert for generations to come.
