Feeder pigs are young pigs sold specifically to be raised to slaughter weight. They typically weigh between 30 and 60 pounds at the time of sale and are under 125 pounds by USDA classification. For anyone entering the swine business or raising pigs on a small farm, feeder pigs represent the most common entry point: you skip the breeding and farrowing stages entirely and focus on growing the animal to market size.
Where Feeder Pigs Fit in the Production Cycle
The commercial pork industry generally splits into two types of operations. Farrow-to-feeder operations handle breeding, birthing, and raising piglets through the nursery stage until they reach roughly 30 to 60 pounds. At that point, the pigs are sold to feeder-to-finish operations, which take over and grow the animals to a market weight of around 260 to 290 pounds.
This division exists because breeding and finishing require very different skills, facilities, and investment. Sow management demands expertise in reproduction, farrowing care, and neonatal nutrition. Finishing pigs is more straightforward: it centers on feeding, housing, and health management. Buying feeder pigs lets a producer skip the most labor-intensive and expensive phase of pork production and start with a healthy, weaned animal ready to grow.
Growth Rate and Time to Market
A feeder pig purchased at around 60 pounds will reach a market weight of roughly 260 pounds in about 118 days, or just under four months. Pigs in the grow-finish stage gain an average of 1.7 pounds per day, though individual rates range from 1.2 to 2.5 pounds depending on genetics, diet, and management.
During this period, pigs convert feed into body weight at an average ratio of about 2.45 to 1, meaning it takes roughly 2.45 pounds of feed to produce one pound of gain. That ratio varies with the quality of the diet, the pig’s genetics, and environmental conditions like temperature and stocking density. A pig that’s too hot, too cold, or too crowded will eat less efficiently.
Common Breeds Used as Feeder Pigs
Most commercial feeder pigs in the United States are crossbreds, selected for fast growth, feed efficiency, and lean carcass quality. The parent breeds that dominate the industry each bring different strengths to the cross:
- Yorkshire: The most recorded breed in North America, known for high lean meat percentage and low backfat.
- Duroc: The second most recorded breed, valued for fast growth, carcass yield, and meat quality.
- Berkshire: Known for efficient growth and superior meat flavor.
- Hampshire: Popular in the Corn Belt for lean muscle, minimal backfat, and large loin eyes.
- Landrace: Often used on the sow side of crosses because females are heavy milkers and produce large litters.
Spotted and Poland China breeds also appear in feeder pig operations, prized for feed efficiency and rate of gain. For small-scale producers buying feeder pigs at auction or from a local breeder, the specific breed matters less than the pig’s overall health, body condition, and frame size at purchase.
What Feeder Pigs Eat
As feeder pigs grow, their diet shifts and simplifies. Young pigs in the nursery stage need specialty ingredients and high protein levels (around 22 to 24 percent crude protein for pigs under 25 pounds). Once they move into the grower-finish phase, the diet transitions to lower-cost ingredients, primarily corn and soybean meal, with crude protein dropping to around 19 percent for pigs in the 55 to 110 pound range.
This transition is one of the economic advantages of the feeder-to-finish model. The expensive, high-protein nursery feeds are the previous owner’s cost. By the time you’re feeding a 60-pound feeder pig, the ration is built around commodity grains that are relatively cheap per pound of gain. Adequate calcium, phosphorus, and salt are the key mineral additions, and most commercial grower feeds include a vitamin and mineral premix that covers the basics.
Housing and Space Requirements
Space needs increase as the pig grows. For pigs between 20 and 50 pounds, plan for about 2 to 3 square feet of indoor floor space per pig in a climate-controlled building. Once pigs reach 50 to 100 pounds, that jumps to 4 to 5 square feet each. At finishing weights approaching 280 pounds, you need 8 to 10 square feet per pig, though the exact number depends on pen design, flooring type, and temperature.
If you’re raising feeder pigs outdoors, provide at least 3 to 4 square feet of well-bedded sleeping area per pig, plus access to an outdoor lot. Outdoor systems also need shade, windbreaks, and mud or water for cooling in warm weather, since pigs can’t sweat and are prone to heat stress.
Water consumption climbs steadily through the growing period. Newly arrived feeder pigs drink about half a gallon per day, increasing to 1.5 gallons or more per day as they approach market weight. Clean, accessible water is one of the simplest factors that affects growth rate, and restricted water intake will slow gains faster than almost anything else.
Health Management
Feeder pigs should ideally arrive with a basic vaccination history. On small farms, the core vaccines typically cover circovirus, mycoplasma (a respiratory pathogen), swine influenza, and erysipelas. Vaccines for intestinal diseases like ileitis and salmonella are also commonly recommended. Most of these are given at three weeks of age or older, so a reputable seller will have already started the program before the pig changes hands.
When buying feeder pigs, look for animals that are alert, have smooth hair coats, breathe easily, and move without limping. Avoid pigs with visible coughing, diarrhea, or a rough, dull coat. Mixing pigs from multiple sources is one of the fastest ways to introduce disease into a group, so buying all your feeder pigs from a single farm in one batch reduces risk significantly.
What Drives Feeder Pig Prices
Feeder pig prices are surprisingly complex and fluctuate with several interconnected factors. The single biggest driver is the expected price of market hogs at the time the feeder pig will be ready for slaughter, roughly four months out. When hog futures prices rise, feeder pig prices follow, because buyers expect a better return on finishing those animals.
Feed costs are the second major factor. Since corn and soybean meal make up the bulk of a finishing diet, drought, poor harvests, or rising grain futures can push feeder pig prices down. Higher feed costs eat into the finisher’s profit margin, so buyers pay less for the pig itself. One simple pricing formula used by Purdue Extension ties the two together: the price per head for a 45-pound pig equals roughly twice the hog-to-corn price ratio.
Prices also vary by season. Feeder pigs command the highest premiums in late winter and early spring (February through April), when buyers want pigs that will reach market weight during the summer grilling season. Prices typically dip in summer months, with July historically carrying the lowest seasonal factor. Regional conditions, including local crop performance, slaughter plant access, and the overall farm economy, create additional variation from one market to another.