E534 The Hidden Gene Behind a Supreme Champion: Sir Inka May, Carnation, and the Rise of Red & White Holsteins

Sir Inka May was the “Crown Prince” Minnesota breeders risked $25,000 on—a calf they could still pick up—and a century later his hidden red gene walked out of Madison as Supreme Champion of World Dairy Expo. From a 75‑cow show herd in Austin to the vast pastures of Carnation Milk Farms, this is the story of a bull who sired 33 All‑Americans and Reserves, built one of the most influential sire lines in Holstein history, and quietly carried a color factor the breed tried for decades to erase. By the time Golden‑Oaks Temptres‑Red‑ET stood Supreme in the Coliseum, the gene that once made breeders nervous had become the beating heart of Red & White Holstein pedigrees worldwide. This episode traces how that happened—and what was at stake each time someone chose to keep, cull, or double down on the blood of Sir Inka May.KEY MOMENTSHow a world‑record cow named May Walker Ollie Homestead set the stage for a son the local paper called “Crown Prince of the Inka herd.”The kitchen‑table decision where four McLeod County farmers signed a $25,000 cheque for half interest in a yearling bull.Why Carnation Milk Farms were ready to go to $30,000 at the 1925 Brentwood Sale—and what Sir Inka May did once he reached Seattle.The moment red‑and‑white calves started dropping in Carnation’s best cow families, and the Ayrshire “fence‑jumper” myth that followed.How Montvic Rag Apple Sovereign and A.B.C. Reflection Sovereign turned Sir Inka May’s blood into a highway that almost every modern Red & White traces back to.What changed when Golden‑Oaks Temptres‑Red‑ET stepped onto the colored shavings in 2025 and carried that once‑unwanted gene to Supreme Champion.Sir Inka May’s name still hides in the middle of modern pedigrees, but his influence is anything but quiet. Nearly every serious Red & White breeder works with descendants of Montvic Rag Apple Sovereign or A.B.C. Reflection Sovereign— and those bulls stand on Sir Inka May’s foundation. Understanding how one sire ended up at the heart of a boutique Minnesota show herd, a corporate production powerhouse, and the early A.I. era gives breeders essential context for the concentrated influence they see in today’s cow families.This story also captures an industry wrestling with its own standards: herdbooks that refused to register red calves, companies that printed warnings about the “red factor,” and breeders who bred on anyway because the cows were simply too good to ignore. Hearing how those choices played out over decades offers perspective for anyone balancing genomics, type, production, and recessives today. Built from archival articles, dispersal reports, and breed histories, this episode brings that era back to life so listeners can hear the footsteps behind the names in their catalogs and classification reports.For photos, pedigree charts, and the full written history profile “The Hidden Gene Behind a Supreme Champion,” visit https://www.thebullvine.com/sire-spotlight/the-hidden-gene-behind-a-supreme-champion-sir-inka-may-carnation-and-the-rise-of-red-white-holsteins/ and look under History Profiles. You’ll find related stories on Montvic Rag Apple Sovereign, A.B.C. Reflection Sovereign, and Golden‑Oaks Temptres‑Red‑ET to keep tracing the line forward. If this episode puts a familiar name in a whole new light, subscribe to The Bullvine Podcast and share it with someone who reads pedigrees the way other people read novels.