When most buyers walk past the one‑off, no‑name three‑weight bull calf at the sale barn, John Sparks sees opportunity.
In the heart of Kentucky’s fragmented cow country — where the average herd is 27 head and calves trickle to town year‑round — Sparks has built a for‑profit stocker business around “straightening out” those discounted singles, growing them on forage and shipping them as “true long‑tail, bulletproof yearlings” in 15‑ to 25‑load strings to farmer‑feeders in Iowa and Nebraska.
Headquartered near Paris, Ky., Sparks and his wife, Melody, and their two daughters — Maggie and Macie — have built an enterprise focused on cattle most buyers would consider too high risk.
Aggregating the Fragmented South
Stocker operations serve a vital role in U.S. beef production and are critical in the southeastern U.S. A strict animal health protocol paired with forage management is essential to keep them profitable.
“The stocker business is a unique opportunity, especially in the southeastern U.S. where our cow-calf operations are a lot smaller,” says Dr. Mark Alley, managing veterinarian with Zoetis beef technical services. “Those small calves, as they’re coming off the farm, are not prepared to go into the feedlot, and the feedlot is not prepared to take care of those calves.”
He explains stocker cattle have two phases — the survival phase and the growth phase. “We have to help them get healthy and survive the on-arrival phase,” Alley explains. “Then, we can add pounds and frame during the growth phase.”
Mastering that transition from survival to growth is where Sparks built his competitive advantage.
For the past 25 years, Sparks has refined a system designed specifically to bridge that gap — buying 300- to 400-lb. bull calves, getting them past the high-risk arrival window and growing them into 900- to 950-lb. yearlings tailored for Midwestern farmer‑feeder programs.
“We generally buy every day, starting in September and going all the way till June,” Sparks says.
Kentucky’s cow herd structure makes that model possible — but also challenging. With an average herd size of 27 head, a lot of year‑round calving, and a sale barn on every corner, calves often show up in ones and twos, with no reputation and plenty of risk.
“Most of them will be sold one at a time,” he explains. “That calf’s generally discounted because he’s sold as one calf, from this guy nobody knows, he has no reputation. Those cattle can’t go straight to the feedyard — that doesn’t work. So, there’s a great opportunity for a backgrounder‑stocker operator to buy those calves and straighten them out. That’s exactly what we do.”
In a typical year, Sparks will run around 10,000 head through his system.
Forage First: Grass, Not Dirt Lots
Unlike many high‑risk calf operations, Sparks’ system is forage‑based from the ground up.
“Everything is done on forage,” he says. “It’s not a dry lot situation. Everything’s on pasture.”
Calves spend just one night in a small pen on clean water and the best hay he can find. The next morning, they’re processed and moved to a 2‑acre grass trap, then into slightly larger pastures as they stabilize.
Sparks’ land base reflects that forage focus. He’s closing on roughly 1,000 owned acres and leases another 3,000 acres as a “home base” to start calves. On top of that, he sends about 5,000 head each year to 15 to 20 cooperator grazers in the area.
“Our limiting factor is how many cattle we can straighten out,” he says. “I could grow the gain — there’s infinite opportunity there — if I can straighten out enough cattle to send out on the gain.”
The environment helps. Central Kentucky’s limestone‑based soils, 60 inches of rainfall and long forage season favor big‑frame cattle.
“Our nine‑weight yearlings will be really big‑frame cattle,” Sparks explains. “What the industry wants more than anything is to make them weigh 1,600 to 1,700, even 1,800 lb., and that’s what the farmer‑feeder does best. He’s drawn to these cattle because of the frame we produce with them. It’s not anything we’re doing in a feedyard — it’s a natural resource God put here.”
Health Is Everything: From PI Testing to Clean Water
Buying high‑risk singles means Sparks has to be obsessive about health from day one. “Health is everything,” he summarizes. “If you ain’t detailed, don’t do it.”
Every load that comes in is kept separate by source and processed the next morning. Each calf gets:
- A consecutive ID tag tied to a specific farm/location
- Test for persistent infection (PI) of bovine viral diarrhea virus (BVDV)
- A core vaccine program — five‑way respiratory, blackleg plus tetanus
- Dual deworming — a white dewormer plus a pour‑on or injectable
- Band castration
One management strategy Sparks incorporated in the past four years is ear notch testing for PI of BVDV at arrival time. Sparks explains the results are available within two to three hours and they can pull any BVD-PI positive calves right away.
“Because we’re buying 300‑ to 400‑lb. bull calves that are naïve, we run about a half of a percent PIs in the state of Kentucky,” Sparks says. “If we buy 10,000 cattle, we’ll have 50 PIs.”
His records show the cost of missing just one. “If we have a PI in a group, you’ll triple your death loss on average and double your treatments,” he notes. “If you’re normally a 3% death loss, you’re going to be 9% in that group on average.”
PIs aren’t just culled; they’re carried through withdrawal and donated to a Christian group that turns the beef into protein sticks for backpack ministries, adding a community‑service angle to what could otherwise be a pure loss.
Sparks and his crew also treat water and hay as core health tools, not afterthoughts. Tanks are brushed and treated with Clorox regularly. Good, soft hay is always available.
“You’ve got to get that calf comfortable,” he says. “He needs to rest, eat and drink. We really focus on hay and hay quality, because that’s what they’re going to go to the most. We don’t treat cattle at the bunk; we don’t want that negative association. We just try to get them comfortable enough to trust us.”
Data-Driven Health: 25 Protocols and Monthly Reviews
Behind the low‑stress, forage‑based system is a surprisingly data‑heavy health program.
Sparks works with two consulting veterinarians. Every cowboy and processing crew member records treatments and events in paper books — no tablets in the alley. Once a month, Melody, John’s wife, enters the data into spreadsheets, and the whole team meets on Zoom.
“We’ll go through about 15 to 20 pages of graphs, just 100% visual graphs,” he says. “We currently have about 25 receiving programs or protocols we use, and multiple treatment protocols. We measure absolutely everything we can think of. We’re basically doing our own research on our operation.”
One counterintuitive lesson from that work: more isn’t always better when it comes to vaccines.
“Sometimes the less you do, the better,” Sparks explains. “You can throw 15 different vaccines at a calf and just overload him. You need to get the foundational stuff right. The answer’s not always in the bottle — it’s in you out there managing that calf and getting him to eat and drink.”
From One Calf to 25 Loads
The reward for all that detail is the ability to move risk‑corrected, reputation cattle in volume. Instead of sending outs and stragglers back through local sale barns, Sparks markets everything he can as load lots sold over the phone to repeat buyers.
“We don’t go back through the sale barn with anything,” he says. “Even our outs get marketed in load lots. Once you’ve got a reputation and multiple buyers coming back to you each time, it’s usually not that hard to sell the cattle. If you’ve got the price right, they’ll move.”
Each of his seven locations has certified scales, so multiple loads can be weighed and shipped early in the day. Cattle often arrive at their new homes in Nebraska or Iowa before dark, avoiding the stress of multi‑stop auction circuits.
“That calf knows what grass is when he comes here,” Sparks says. “By the time he gets on that truck as a nine‑weight, he’s had pinkeye twice, he’s had all the health worked out and he’s got that slow yearling walk. All that’s left for the next man is to feed him.”
For Sparks, that’s the payoff: Taking high‑risk, discounted singles and turning them into reliable, high‑demand yearlings — one calf, one pasture and one protocol at a time.
John’s Top 5 Keys to Straightening Out High‑Risk Calves
1. Get them comfortable before you get them productive.
Sparks starts with rest, hay and water — not grain and gadgets. Small, quiet receiving pens keep calves from walking themselves to death. Calves spend one night on clean water and soft, palatable hay before processing, then move to grass traps so calves are in a natural environment.
2. Treat water and hay as health tools, not afterthoughts.
For Sparks, good hay and clean water sit at the top of the health program. Set out multiple bales in the pen at first and let calves show you which hay they prefer. Clean water tanks regularly with a brush and light Clorox to keep water fresh and easy to find. Keep grain minimal early on and focus on forage the rumen understands.
3. PI test and manage health with data, not guesswork.
Buying one‑at‑a‑time calves means Sparks can’t afford blind spots. PI test every calf on arrival and pull positives immediately. Rely on dual dewormers, core vaccines and standardized receiving protocols. All treatments go into notebooks, then into spreadsheets for monthly graph reviews with consulting veterinarians.
4. Keep groups small and handling low‑stress.
Health and gain start with how calves are grouped and worked. Sparks maintains initial groups of 20 to 50 head, often bought within a day or two, then combines them gradually. Pasture groups rarely exceed 100 to 120 head to match fragmented pastures. Avoid treating at the bunk and eliminate rough handling in the chute; revaccination is done in long alleys to minimize stress.
5. Don’t expect a bottle to fix bad stockmanship.
Sparks leans on management first, pharmaceuticals second. He uses roughly 25 receiving protocols but resists the urge to “throw everything” at calves. Put the emphasis on rest, forage, clean water, mineral and parasite control. Adjust protocols only after looking at numbers, not based on feelings.
