Modern Houston is very much a product of the 1980s oil boom. Some of Downtown’s most iconic skyscrapers were designed by legendary architects I. M. Pei and Philip Johnson, and fossil fuel money flowed into building up the collections of beloved museums and arts institutions. But, more quietly, the city also owes a portion of its economic success to another slick liquid of organic provenance, albeit as far from a dark hue as it gets: cattle semen.

As Houston Livestock Show and Rodeo attendees nibble on sugary, salty carnival goodies and sing along with their favorite Southern-fried country acts, nearly 3,000 bovine industry professionals representing almost 80 countries from every continent except Antarctica converge out of sight. They’ve flown into Space City to learn more about cattle genetics and negotiate deals on vials of precious white gold from the healthiest, most robust bulls.

Known as “straws” for their resemblance to narrow drinking straws, these collections of prized swimmers generally go for anywhere between $25 and $30 per vial, according to Jon Garza, the Rodeo’s ambassador for its International Committee, but prices can skyrocket into the thousands, particularly for a high-end Wagyu stud.

Purchasing semen requires significantly less logistical and legal maneuvering than transporting a live animal across national borders, although it isn’t unheard of for a bull to be taken on an overseas voyage to service some lady loves. Garza himself has facilitated such rendezvous, in fact, but most buyers show up for the straws and, occasionally, frozen embryos to be shipped at an agreed-upon time.

These vials contain the genes needed to create tougher herds capable of withstanding the environmental challenges of each biome where cattle are raised for dairy, leather, and meat. The American Brahman, for example—bred for its heightened resistance to insects—is ideal for the Texas heat and humidity. The Houston Rodeo was the first to show this breed, eventually popularizing it among ranchers in regions with similar conditions in Mexico, Central and South America, Africa, Asia, and Australia. “The breed that was developed specifically for this region now has expanded to these other global markets, and that’s the breed that they want,” says Rachel Cutrer, owner and co–general manager of BRC Ranch in Boling, Texas. “So, all these ranchers gather at Houston every year, and it’s like the Galleria of cattle shopping.”

Garza estimates that, in 2025, the International Committee raised over $4.5 million from the sale of semen, embryos, and merchandise alone. Breeders from Uzbekistan, Kazakhstan, and the Kurdish Republic accounted for $1.5 million; those numbers reflect the Rodeo’s revenue only and do not factor in the amount earned by the ranchers themselves. And that’s just during Rodeo season.

The connections formed at NRG Stadium each year can add a few million to the total. “I always tell people that every handshake, every conversation, every connection, it strengthens these relationships, and it goes far beyond the arena,” says Tammy Barrier, chair of the International Committee. “I mean, we don’t stop when they go home; we’re there for them.” 

Cutrer likens the Livestock Show half of the Rodeo to “a showroom,” where breeders can directly inspect the studs whose semen is up for sale and their genetics. “They can also study the parentage and the pedigree, so that they can have some sort of visual expectation of what the animals they produce in their home country are going to look like, since most of the time they would be siblings to the animals we have here in the USA,” Cutrer adds. Ranchers, breeders, and their representatives typically “have an idea of the bulls that they want because they’ve done their research.” For those who can’t meet the stud in person, detailed catalogs—not unlike high-end retail lookbooks that hit mailboxes around the holiday season—help fill in the gaps.

The business isn’t relegated exclusively to the NRG campus, of course. Legally, it can’t be. Securing semen requires a USDA-approved facility and adherence to stringent international quality guidelines. BRC Ranch doesn’t collect specimens on its own land. Rather, staff transport prized bulls to licensed handlers such as those at Central Texas’s Elgin Breeding Services, which meets all the criteria for safe testing, extraction, storage, and export. The process involves a veterinarian on staff and approval from the recipient countries’ respective agriculture ministries.

Travelers who arrive at the Rodeo seeking spermatozoa return home with more than just orders for baby batter in hand. The International Committee also provides an educational component. It hosts the annual Agri-Summit in partnership with Texas A&M, offering hands-on experience and light competition for participating ranchers to help them learn new skills and techniques for caring for their cows. The program has expanded to include breeding groups, collection facility staff, and exporters who present on evolving trends and protocols in the cattle industry.

Committee members also travel abroad, generally at their own expense, to support partner nations, meet with local ranchers, and assess any herd issues in person. Recently, Garza and Barrier visited Costa Rica to meet with government officials and help develop protocols for importing cattle. On another trip, they evaluated handling practices in a country where semen samples and embryos were dying during transit and offered recommendations to improve transport.

“If you’re coming to the US, and you want to learn about the best genetics, you want to take information back home to better your country, I think you come to Houston,” Barrier says.

As the Rodeo works to build a larger national and international presence, these efforts have become a critical, though largely unseen, part of its influence. While a marketing strategy, it also aids cattle ranchers worldwide by providing resources to help sustain food systems under mounting ecological and economic pressures. It’s worth noting that large-scale factory farming projects within the cattle industry exacerbate issues like climate change and drought, but hardier breeds better equipped to withstand insects and extreme weather events could help an industry that grapples with its own greenhouse gas emissions. These cattle may help stabilize food production in underresourced regions where red meat provides a relatively stable source of protein and fat for a larger population. As such, this Texas breeding game could be a life-changing prototype.