The Breed
Hereford Tears
It began as a plow ox on the Welsh border. It took over the Texas range, and for decades it was the most registered beef breed in America. Then the market turned black, and the breed’s white face, its signature, turned out to be its weak point. The sun gets into a Hereford’s eyes: the tears of pinkeye and, in older cows, cancer. This is how the whiteface won the West, why it lost the market, and how a cross with Angus, the black baldy, brought it back.
Stand at any sale barn in the West and watch the ring.
Sooner or later a red cow comes through with a white face.
White head. White brisket. White along the belly, white on the tail switch. Deep red everywhere else.
You know her before the auctioneer says a word.
For decades, no beef breed in America registered more cattle.
It spread across Kansas, out over the Texas Panhandle and into the high country of Wyoming and Montana. For a hundred years it was the face of the American ranch.
Now look closer, at her eyes.
Around them the skin is pink. The lids are pink. The hair is white.
Nothing there to stop the sun.
In summer you will see some of these cattle squinting. A wet streak runs from the corner of the eye down the white face. Flies sit in it.
Cattlemen have a word for that. Pinkeye.
In older cows, years of sun can do worse. A small white spot on the eyelid. A wart on the edge of the eye. A growth that will not stop.
They call that cancer eye.
The white face made the Hereford famous. It is also where the breed is weakest.
The Plow Ox
The Hereford was not built for beef.
It was built to pull.
Herefordshire is border country, green and wet, between England and Wales. Its old cattle were red, the native stock of the Welsh border.
For centuries those cattle worked. The Domesday survey of 1086 counted the ox-plow teams in the county.
A good ox plowed for several years. Then he was turned out on grass and fattened for market.
The farmers noticed something about their oxen. Some of them put on flesh fast once their working life was over. The graziers paid more for those.
So the farmers began to breed for it.
The American Hereford Association dates the breed to 1742, when Benjamin Tomkins started with a bull calf out of a cow named Silver, and two cows, Pidgeon and Mottle.
The British society gives the credit to his father, Richard, who left Benjamin the cow Silver and her calf.
Either way, the line began on a few small farms around King’s Pyon and Canon Pyon, a few miles north of the city of Hereford.
Other families did the same work nearby.
The Galliers of Wigmore Grange liked cattle with speckled faces. The Tullys of Huntington bred grey-faced cattle. The Prices and the Hewers bred hard toward one type.
Their cattle got bigger.
In 1799 a Hereford ox was champion at the first Smithfield Show in London. In 1839 the bull Cotmore won the first Royal Show. He is recorded at about 3,900 pounds.
The money followed.
In 1819, twenty-eight of the Tomkins cattle sold at auction for an average of 149 pounds sterling each. That was a fortune for a cow.
One thing was still unsettled. The face.
Early Herefords came with mottled faces, speckled faces, grey faces and white ones. When Thomas Eyton printed the first herd book in 1846, it listed four color types.
Within about twenty-five years, all but one had nearly disappeared.
Deep red body, white face. That was the breed the world would know.
The Rival
The Hereford had a rival from the start. The Shorthorn.
The Shorthorn breeders got organized first. Their herd book appeared in 1822.
Herefordshire’s breeders held out for another twenty-four years. Some of them did not want a book telling them what their cattle should look like.
It cost them. The Shorthorn spread across England while the Hereford breeders argued.
The Hereford Herd Book Society was finally incorporated on March 5, 1878, under the patronage of Queen Victoria.
By then the fight had moved overseas.
The prize was America.
Across the Water
The first Herefords in America came to Kentucky in 1817.
Henry Clay brought them to his farm near Lexington: a young bull and two females, by most accounts.
They did not last as a breed. They were crossed into local cattle and disappeared.
The first lasting herd was started in 1840 near Albany, New York, by William Sotham and Erastus Corning, with about 22 imported head.
Fewer than 200 Herefords came to America before 1880.
Between 1880 and 1889, more than 3,500 came.
Something had changed.
The buffalo were nearly gone from the plains. The Longhorns were filling the grass.
Ranchers wanted more beef from every animal.
In Chicago, on June 22, 1881, the breeders formed what became the American Hereford Association.
The same year, two men in Missouri imported a bull.
Anxiety 4th
Charles Gudgell and Thomas Simpson had been breeding Herefords in Missouri since 1877.
In 1881 they brought over a bull from England. His name was Anxiety 4th. Registration number 9904.
The early Herefords had a fault. They were light behind. Not enough muscle in the hindquarter, the part of the animal where the expensive cuts are.
Anxiety 4th had a hindquarter.
Gudgell and Simpson built their herd around him. They line-bred carefully, putting his blood back on itself.
His grandson Beau Brummel was born on their farm in 1890. Prince Domino came out of the same program in 1914 and became one of the most important sires in the breed’s history.
In 1982, the county historical society put up a marker at the old Gudgell and Simpson farm in Independence, Missouri.
It says nearly all American Herefords descend from Anxiety 4th.
The farm is a housing development now. In 2022 the residents dedicated a small park in his name.
He has been called the bull that gave Herefords their hindquarters.
A neighborhood park in Missouri, named for a bull from Herefordshire. That is how deep the breed runs in this country.
The Whitefaces Take the Range
The Texas Longhorn was a survivor. It could walk to Kansas on almost nothing.
But it was rangy and slow to finish. It carried little beef for its frame.
The ranchers wanted an animal that could live on the open range like a Longhorn and fill out like an English steer.
The first tries went badly.
The Ikard brothers bought ten Herefords at the 1876 Centennial Exposition in Philadelphia and took them to Texas. Tick fever killed most of them.
Others kept trying.
In 1883, Charles Goodnight put twenty registered Hereford bulls on the JA Ranch in the Texas Panhandle. In 1884 he brought in forty more, straight from Herefordshire.
Between 1882 and 1888, several thousand Hereford bulls were trailed south from Dodge City into the Panhandle.
The giant XIT Ranch began grading up its Longhorns with Hereford and Angus bulls in 1889.
The Hereford did what the ranchers needed.
It foraged. It handled cold. It put weight on from grass alone.
Each generation of crossbred calves was a little more Hereford, a little less Longhorn.
The Texas State Historical Association credits the Hereford’s success with ending the Longhorn as a major range breed.
Bull prices climbed with the demand. In 1899 the Texas rancher C.C. Slaughter paid $5,000 for one bull, Sir Bredwell.
By the 1930 census there were 448,767 registered Herefords in the United States. Nearly 95,000 of them were in Texas.
From Canada to Mexico, the American range turned red with white faces.
The Hornless Ones
The Hereford had horns. Big ones, curving forward.
Horns hurt other cattle in a crowded pen or a truck. They bruise carcasses. Ranchers had to cut them off.
In 1898 an Iowa breeder named Warren Gammon went to the Trans-Mississippi Exposition in Omaha.
He saw something there he could not forget. A few Herefords born without horns.
Gammon went looking for more.
By 1901 he had found enough to start a registry: 11 naturally hornless Herefords.
On February 21, 1902, the first planned mating took place beside a windmill southwest of Indianola, Iowa. The bull was named Giant.
By 1976, polled Herefords outnumbered horned ones in the United States.
For most of the century there were two Hereford associations, one for horned cattle and one for polled.
They merged in 1995.
The Top
Through the first half of the twentieth century, the Hereford kept growing.
In 1945, the American Hereford Association registered 303,679 cattle, at the time a record for any breed in a single year.
In 1953, it registered 560,794.
By the end of 1960 the association had recorded 10 million Herefords.
No beef breed in America had ever been that big.
And in the middle of the boom, something started to go wrong.
The Snorters
In the 1930s and 1940s, show judges fell in love with small cattle.
Short, compact, blocky, early to finish. The breeders gave the judges what they wanted.
They selected for smaller and smaller cattle. Some lines got very small.
Then the calves started coming wrong.
Some were born with short, dished faces and swollen bellies. Their tongues were too big for their mouths. They breathed with a snore.
Breeders called them snorters.
They were dwarfs.
A normal mature Hereford weighed about 1,800 pounds. A dwarf, about 600.
In Virginia herds from 1954 to 1959, 1.41% of 6,291 Hereford calves were dwarfs, four times the rate in Angus.
One California breeder found signs of dwarfism in a quarter of his registered calves.
It was a recessive gene. A bull could carry it and look perfect.
Without knowing it, breeders had been choosing carriers, because carriers often looked exactly like the compact cattle the judges wanted.
There was no test.
The only answer was to cull. Bulls that had sold for small fortunes went for slaughter prices. Whole bloodlines were sent away.
Help came from an unlikely place.
In 1934, the federal research station at Miles City, Montana, had started a closed herd from two bulls and fifty cows. It was called Line 1. It turned out to be free of the dwarf gene.
Breeders used Line 1 bulls to rebuild clean herds. By the mid-1970s, dwarfism was no longer a problem in the breed.
More than half of today’s registered American Herefords trace back to Line 1.
And when scientists first sequenced the genome of a cow, the DNA came from a Line 1 Hereford.
The Market Turns Black
The trouble that followed was not in the cattle. It was in the market.
In the 1970s, new breeds came to American ranches from continental Europe. Charolais, Simmental, Limousin. Bigger cattle, more muscle, more growth.
Then, in 1978, a new kind of beef went on sale in Columbus, Ohio.
It was called Certified Angus Beef. It was billed as the first branded fresh beef in the country. It became the biggest.
To qualify, a steer had to look like an Angus. Over time the rule came down to the hide: predominantly black.
A red Hereford with a white face could never make it.
Feedlots wanted cattle that could earn the Angus premium. Order buyers wanted black. So the price at the sale barn moved too.
In a Kansas State study of feeder calf auctions, black calves sold for $2.49 per hundredweight more than red ones.
In 1987, Hereford registrations, horned and polled together, still ranked first at 171,409. Angus registered 141,239.
By 2007, Herefords were down to 69,344, third behind Angus and Charolais. Angus was registering 347,572.
Today the Angus association registers more than 300,000 cattle a year. It has done so eleven years in a row.
The Hereford association registered 70,592 in its 2025 fiscal year.
From 560,794 to about 70,000. The face that won the West had fallen out of fashion.
The Tears
There was another reason ranchers drifted away from straight Herefords.
They could see it every summer, running down the white faces.
Pinkeye is an infection of the eye. Its formal name is infectious bovine keratoconjunctivitis. The main cause is a bacterium called Moraxella bovis.
It spreads in summer, carried by face flies that feed on the moisture around the eye.
Tall grass and seed heads scratch the eye and open the door. Bright sunlight makes it worse.
The first sign is tears.
The eye waters and the calf squints. It turns away from the light. A dark wet line runs down its face. The flies come to the wet, and the flies bring more bacteria.
Then the eye clouds over. In bad cases a white ulcer opens in the middle of it. Some calves lose the eye.
Over twenty years, USDA researchers in Nebraska followed 45,497 calves of many breeds for pinkeye. The Herefords were the most susceptible.
Cases rose in June and peaked from July through September, with the face-fly season.
Calves that got pinkeye weaned about 20 pounds lighter.
An older Oklahoma study put it more starkly.
Seventeen percent of the Hereford calves got pinkeye. Two percent of the Angus calves did.
The difference is mostly pigment.
An Angus has black skin around its eyes and black lids. The pigment soaks up the sunlight before it can do damage.
A Hereford usually has pink skin and white hair at the eye. The light goes straight in.
In the 1970s, Nebraska researchers scored 963 cows and 679 calves for eyelid pigment. The more pigment an animal had, the less pinkeye it got, and the milder the cases were.
The straight Herefords had the least pigment and the most pinkeye.
Calves with a little Angus blood had more pigment and less pinkeye.
Cancer Eye
Pinkeye mostly hits calves, and most of them get better.
Cancer eye is different. It hits older cows.
Its formal name is ocular squamous cell carcinoma. It is the most common cancer in cattle. The Merck Veterinary Manual says it is most common in Herefords.
It starts small.
A white, raised spot, often on the edge of the eye where the clear part meets the white. Or on the eyelid, or on the third eyelid in the inner corner.
Some of these spots go away on their own. Others grow into a hard, scaly patch, then something like a wart.
Some of those turn into cancer.
Left alone, the tumor grows over the eye and into the bone of the skull. It gets infected and swarms with flies. It can spread through the body.
Cancer eye is rare in cattle under three, uncommon under five, and most often appears at about eight years old.
In susceptible herds, between 0.8% and 5% of the cattle at risk develop it each year.
In one study of 396 Hereford cows followed for five years, more than half had an eye lesion of some kind at least once.
The cause is mostly the sun.
In 1957 and 1958, researchers examined 2,775 Herefords in 34 herds across 21 states and one Canadian province.
The more sunlight the herd lived under, the more cancer eye it had. Higher altitude, more hours of sun, less cloud. The cattle in the brightest places got it younger.
The sun is not the only factor. Age matters. Diet may matter. Researchers have found papillomavirus and other viruses in some tumors, but their role is not proven.
Pigment matters most.
In a Texas study of 1,083 cattle across eight southern states, the Herefords had pigment over about two-thirds of the eyelid area. Crossbred cattle had pigment over 88 to 95 percent.
Eight percent of the Herefords had lesions. One percent of the crossbreds did.
The same white face that sold the breed was letting the sun in.
The Cost
Cancer eye is expensive.
A cow with a growing tumor has to be treated or sold. A good cow at eight years old has years of calves left in her. She leaves the herd early.
Caught small, the tumor can be frozen off, burned off with heat, or cut out. Veterinarians can remove the whole eye if the cancer has not spread. A one-eyed cow can still raise a calf.
Caught late, there is nothing to sell.
Federal meat inspectors record cancer eye as epithelioma. If it has spread or reached the bone, the whole carcass is condemned.
In fiscal year 2000, USDA inspectors condemned 14,092 cattle carcasses for it. 13,936 of them were cows.
That made it the third most common reason a cow carcass was condemned in America that year.
Rules for moving cattle are strict too.
In Canada, a cow with severe cancer eye is legally unfit to be transported, except to get veterinary care. In Australia, ranchers have been prosecuted for keeping cows with advanced tumors to get one more calf.
The advice is the same everywhere.
Check the eyes. Treat early. Cull the cow while there is still value in her.
And breed for pigment.
Breeding for Pigment
The good news is in the genes.
Eye pigment is strongly inherited. A breeder who chooses bulls and heifers with dark skin around their eyes will get calves with more of it.
Researchers knew this by the 1950s. In 1963 a study of 548 Herefords concluded that selecting for pigmented eyelids should reduce cancer eye.
Modern DNA work has gone further.
In 2019, researchers photographed 706 Herefords at a ranch in Nebraska. 240 had pigment around both eyes. 365 had none.
The trait was highly heritable, with a heritability of about 0.75.
A study of Uruguayan Herefords put the heritability of eyelid pigment at about 0.41. A study of Brazilian Herefords and Brafords put it at 0.46.
The Nebraska study found one big genetic signal for eye pigment. It sits on chromosome 6, near a gene called KIT.
That is the same neighborhood in the genome tied to the white face itself.
The trait that made the breed is wired right next to the trait that protects it.
Many Hereford breeders already select for eye pigment. Some sale catalogs list it. The federal Line 1 herd prints the percentage of pigment around each eye for every bull it sells.
But the American Hereford Association publishes 17 genetic predictions for its cattle, and none of them is for eye pigment. In 2019 it backed research to find DNA markers for it.
The tool is coming. The faster way to fix the eye was already standing in the next pasture.
The Black Baldy
Put a Hereford bull on an Angus cow, or an Angus bull on a Hereford cow.
The calf that comes out is black. It has a white face.
Ranchers call it a black baldy. Sale reports call it a BWF, for black whiteface.
The look is simple genetics. Black is dominant to red, so the calf is black. The Hereford white-face gene shows through, so the face is white. The Hereford’s white belly and white tail switch mostly disappear.
Angus cattle are naturally hornless, and that is dominant too. The cross is usually polled.
Something else carries over from the Angus side.
Baldies often carry more dark pigment around the eyes than straight Herefords.
That Nebraska pinkeye study tested it directly. Calves that were three-quarters Hereford and one-quarter Angus had more eyelid pigment than straight Herefords, and less pinkeye.
No study we found has measured cancer eye in black baldies specifically. But the evidence on pigment points one way.
Then there is the money.
When two unrelated breeds are crossed, the calf often outperforms both parents. Geneticists call it heterosis. Ranchers call it hybrid vigor.
It shows up most where it pays most: in the cow herself.
From 1957 to 1976, USDA scientists ran a crossbreeding experiment at Fort Robinson, Nebraska, with Angus, Hereford and Shorthorn cattle. The crossbred cows weaned 14.8% more pounds of calf for every cow put to the bull.
By the end of the experiment, 24% of the original crossbred cows were still in the herd. Only 11% of the straightbreds were.
Over twelve years, a later analysis found, the crossbred cows weaned about one more calf each, and about 25% more total calf weight.
Recent studies sponsored by the Hereford association point the same way.
In a University of Illinois project, 600 commercial Angus cows were bred half to Hereford bulls and half to Angus. Their daughters were followed for years.
Among the Hereford-sired daughters, 93 percent were pregnant again as two-year-olds. Among the Angus-sired, 75 percent. At four years old, 80 percent of the baldies were still in the herd, against 67 percent of the straight blacks.
In Oklahoma, researchers found Hereford-sired baldy cows ate nearly two pounds less forage a day than straight Angus cows. They held their body condition better.
A cow that breeds back, stays in the herd and eats less is the cow that makes a ranch money.
And the baldy solves the market problem too.
Since 2017, the live-animal rule for Angus beef programs says the body must be solid black. It does not mention the face.
A black baldy gets the Angus hide and the Hereford vigor in one animal.
The Baldy Female
Talk to commercial ranchers and you hear the same thing.
“The baldie female, in my opinion, is second to none as a replacement female,” Paul Koffskey of Groendyke Ranch in Oklahoma told the trade paper Drovers this year.
A Colorado operation, Hermes Livestock, tracked 3,700 heifers over four years. Sixty-four percent of its black baldies bred in the first 35 days of the season. That was nine points better than its Angus heifers.
“It’s no secret,” said Anton Hermes, “that everyone wants a baldy female.”
The sale barns show it.
At one South Dakota auction in February 2024, about 85% of 4,471 head sold were Hereford or Hereford-influenced.
In the 2025 fiscal year, Hereford bulls averaged $8,621 at auction, up from $6,256 two years before.
The association counted 34 special sales of Hereford-influenced commercial cattle that year, moving 25,861 head.
Registrations of purebred Herefords are not growing. They slipped again in 2025.
But demand for Hereford bulls to put on black cows is.
The breed came back, mostly in other breeds’ herds.
Where It Goes Next
The American cow herd is small right now.
On January 1, 2026, there were 86.2 million cattle and calves in the United States. That is the fewest since 1951.
There were 27.6 million beef cows, the fewest since the early 1960s.
When ranchers rebuild, they will be choosing which heifers to keep.
Heifers that breed early. Cows that stay. Cows that can live on grass and raise a calf every year without much help.
That is exactly what the Hereford was bred for, two and a half centuries ago in Herefordshire.
The sun is not going away either.
Summers are long and bright across the cattle country of the South and the high plains. Flies are part of every grazing season.
A breed that wants to keep its place has to protect its eyes. The Hereford can do that two ways. It can breed for pigment within the breed, one bull at a time. Or it can meet the Angus halfway.
Ranchers are doing both.
A red cow with a white face is still coming through the ring.
More and more often, her calf is black.
Why It Matters
A Hereford steak looks like any other steak.
So does an Angus steak, and a baldy steak.
By the time beef reaches the grocery store, there is no breed on the label. No face, no eyes, no ranch.
Behind every one of those steaks there was a cow.
Somebody checked her eyes in July. Somebody decided whether to treat a white spot or ship her before it grew. Somebody picked the bull, black or red, that would give her calf the best start.
Those decisions are made on ranches every day. Most buyers never hear about them.
That is what we are trying to change.
Every breed has a story. Every ranch has a name. Know who raised your beef.
About this piece
Figures are as of 23 October 2026. Sources disagree about who founded the breed. The American Hereford Association credits Benjamin Tomkins and the year 1742; the Hereford Cattle Society in Britain credits his father, Richard Tomkins. Accounts of Henry Clay’s 1817 import differ on the animals, and accounts of Warren Gammon’s first polled herd differ on the number, which we give as the eleven registered in 1901. Registration figures are the American Hereford Association’s and the American Angus Association’s own. The 1987 and 2007 comparisons are from a Texas A&M summary. The University of Illinois, Circle A and Hermes Livestock results come from research sponsored or published by the American Hereford Association. The Fort Robinson and lifetime-production figures are from USDA research. The cancer-eye comparison of 1,083 cattle compared Herefords with crossbred cattle in general, not black baldies specifically; we found no study of cancer eye in black baldies. Cancer eye incidence varies widely by herd, age and sunlight. The condemnation figures are USDA’s for fiscal year 2000, the most recent full breakdown we could find. Livestock-health information here is general and is not veterinary advice. This piece makes no claim about the healthfulness of any beef. SteakTrade has no connection with any breed association, ranch or researcher named here.
Sources
American Hereford Association, “History” and “Hereford Heritage” fact sheet (hereford.org) — 1742 and the Tomkins cattle; the 1881 founding; 1945, 1953 and 1960 registration figures; the 1995 merger. American Hereford Association annual reports, fiscal years 2022 to 2025 — registrations, bull sale averages, Hereford-influenced commercial sales. “New Anxiety 4th historical marker” (May 2022); “Identifying genetic markers to predict eye pigment” (September 2019); “Hereford influence sells strong” (February 2024); trait definitions page.
Hereford Cattle Society (herefordcattle.org), “Our history” — Richard Tomkins, the 1795 Galliers sale, Smithfield 1799, the 1846 herd book, the 1878 society. Herefordshire Council, Herefordshire Through Time, “Cattle”, “Hereford cattle 1700–1900” and “Breed promotion” — draught-ox origins, the Domesday survey, the Tomkins, Galliers, Tully and Price families, the 1819 sale, the delay in the herd book. Encyclopaedia Britannica, “Hereford” — color classes in 1846.
Oklahoma State University, “Breeds of Livestock: Hereford” and “Polled Hereford” — Clay’s 1817 import, Sotham and Corning in 1840, imports before and after 1880, Gudgell and Simpson, Cotmore, Warren Gammon and the 1901 registry. Texas State Historical Association, Handbook of Texas, “Hereford Cattle” (revised 2017) and “JA Ranch” — the Ikard brothers, Goodnight’s 1883 and 1884 bulls, the Dodge City trail, the decline of the Longhorn. Texas Hereford Association history — Sir Bredwell, the 1930 census figures. Western Livestock Journal, “Historical marker dedicated to Anxiety 4th” (February 2023). Historical Marker Database, Gudgell & Simpson marker (1982). National Register of Historic Places, Polled Hereford Breed Origin Site.
Harlan Ritchie, “From big to small to big to small”, On Pasture (July 2016) — the compact type and the snorter dwarf. USDA Agricultural Research Service, Agricultural Research (August 1996 and March 2010) — dwarf weights, Line 1 at Miles City, the genome sequence. University of Tennessee thesis (1962), citing Marlowe (1961) — Virginia dwarfism rates. Troy Smith, Hereford World (July 2010) — dwarfism culling.
Certified Angus Beef, “For 35 years” (October 2013) — the 1978 launch. USDA Agricultural Marketing Service, Angus live-animal specification (revised May 2017). Schulz, Dhuyvetter and others, Kansas State University, “Factors affecting feeder cattle prices” (revised 2010). Texas A&M AgriLife, “Beef Cattle Browsing” (December 2007) — 1987 and 2007 registrations. American Angus Association, fiscal year 2025 results (November 2025).
Merck Veterinary Manual, “Ocular neoplasia in cattle” (2022, updated 2024) and “Infectious keratoconjunctivitis in animals” (2024). Snowder and others, “Influence of breed, heterozygosity, and disease incidence on estimates of variance components of respiratory disease… and infectious bovine keratoconjunctivitis”, Journal of Animal Science 83 (2005) — 45,497 calves. Cobb, Frahm and Mizell, Oklahoma State University research report (1976) — pinkeye in Hereford and Angus calves. Ward and Nielson, Journal of Animal Science 49 (1979) — eyelid pigment and pinkeye.
Anderson and Badzioch, American Journal of Veterinary Research 52 (1991) — 2,775 Herefords and solar radiation. Riley and others, Texas A&M AgriLife Research, “Eye pigmentation quantification and lesion occurrence in white faced cattle” — 1,083 cattle. Russell and others (1976), as cited in Jivanji and others (2021) — 396 Hereford cows. USDA Food Safety and Inspection Service, carcass condemnation statistics, fiscal year 2000. Code of Federal Regulations, 9 CFR 309.6 and 311.12. Canadian Food Inspection Agency, Transport livestock in Canada. Stock & Land, “Raising awareness of cancer of the eye in cattle” (January 2012).
Vogt, Anderson and Easley, Journal of Animal Science 22 (1963) — 548 Herefords. Jivanji, Koscha, Littlejohn and Garrick, “Genome-wide association study of UV-protectant ambilateral circumocular pigmentation in Hereford cattle”, New Zealand Journal of Animal Science and Production 81 (2021). Jara and others, Journal of Animal Science 100 (2022) — Uruguayan Herefords. Reimann, Universidade Federal de Pelotas (2016) — Brazilian Herefords and Brafords. USDA-ARS Line 1 Hereford sale catalog (2013).
Oklahoma State University, “Color patterns in crossbred beef cattle”, AFS-3173 (2017). Kirkpatrick, University of Tennessee, W471 (2017) — Fort Robinson results. Cundiff and others, “Heterosis for lifetime production in Hereford, Angus, Shorthorn, and crossbred cows”, Journal of Animal Science 70 (1992). Oklahoma State University, “Cow efficiency research” (February 2019). Drovers, “More calves, longer life: the real math of maternal heterosis” (September 2026). Hereford World, fertility feature (August 2026) — University of Illinois and Hermes Livestock results. USDA National Agricultural Statistics Service, Cattle (January 30, 2026). University of Kentucky, “Contraction of the US beef cattle herd continues” (February 2026).