Pig Farming Glossary

AI (Artificial Insemination) Reproduction

Introducing boar semen into a sow or gilt using equipment rather than natural mating. The dominant breeding method in commercial U.S. swine production — it lets one top boar sire thousands of litters and lets a producer tightly control genetics, timing, and disease exposure.

All-in/all-out production Industry & Operations

A management system in which an entire group of pigs enters a room or barn together, leaves together, and is followed by a full clean-and-disinfect before the next group arrives. Central to modern biosecurity because it breaks pathogen cycles between batches.

Automatic feeder Nutrition & Feed

Mechanized equipment that dispenses feed on demand or at set intervals. Ranges from simple gravity-flow dispensers in a nursery pen to computer-controlled stations that identify individual pigs and release a metered ration.

Automatic sorting scales Housing & Equipment

RFID-enabled scales that weigh pigs as they pass through and route them into pens by weight class. Let a finisher market pigs at a target weight without hand-sorting — labor-saving, and usually kinder to the pigs than chute sorting.

Backfat Health & Biosecurity

Subcutaneous fat depth over the loin, usually measured with an ultrasound probe. A carcass-quality benchmark: packers discount very fat carcasses and genetics selection has pushed industry backfat steadily downward over the last several decades.

Barrow Lifecycle

A castrated male pig. Most market hogs in the U.S. are barrows — castration reduces aggression in grow-finish pens and prevents "boar taint," an off-flavor in pork from intact males.

Biosecurity Health & Biosecurity

The set of protocols designed to keep pathogens off a farm and to contain them if they appear — shower-in/shower-out entry, truck-wash standards, downtime between farm visits, boot dips, rodent control, and controlled airflow. On a modern sow farm, biosecurity is closer to a hospital protocol than a traditional farm chore.

Boar Reproduction

An intact (non-castrated) adult male pig used for breeding or semen collection. Most commercial herds keep only a small number of boars and rely on AI for most matings.

Boar effect Reproduction

The triggering of puberty and standing heat in gilts by exposure to pheromones from a mature boar. Producers use controlled boar exposure to synchronize estrus in replacement gilts so they can be bred on a predictable schedule.

Breeding herd Reproduction

The population of sows, gilts, and working boars kept for piglet production — as distinct from the growing pigs, who are the output. Operations are often sized by breeding-herd count ("a 2,400-sow farm").

Breeding soundness evaluation Reproduction

A veterinary exam of a boar's fertility potential — semen motility and morphology, libido, physical soundness. Standard practice before placing a boar in service or a stud into semen production.

CAFO (Concentrated Animal Feeding Operation) Industry & Operations

An EPA regulatory category under the Clean Water Act for animal feeding operations that meet confinement criteria plus specific size or discharge conditions. For swine, EPA sets Large CAFO size at 2,500 or more head over 55 pounds (or 10,000 or more under 55 pounds); Medium CAFOs fall in defined smaller ranges and require a qualifying discharge condition; smaller operations may be designated case-by-case. Classification matters because it drives NPDES permit, nutrient-management-plan, and discharge-recordkeeping requirements — not because every confinement barn automatically qualifies.

Castration Health & Biosecurity

Surgical removal of a male piglet's testicles, typically performed within the first week of life. Prevents boar taint in the finished carcass and reduces fighting in grow-finish pens. Immunocastration is an alternative, chemical approach used in some markets.

Colostrum Health & Biosecurity

The first milk a sow produces after farrowing — rich in immunoglobulins the piglet needs in its first few hours of life. Piglets cannot absorb these antibodies after roughly 24 hours, which makes the first nursing a hard biological deadline.

Confinement system Housing & Equipment

Indoor housing designed to control climate, feed, water, manure, and disease exposure across the pigs' full life. The dominant production system for U.S. commercial pork — driven by productivity, biosecurity, and labor efficiency, and criticized for animal-welfare and community-impact reasons.

Continuous farrowing Lifecycle

A production schedule in which sows farrow on a rolling basis rather than in discrete batches. Steady weekly output of weaners; less compatible with strict all-in/all-out cleaning than batch farrowing.

Contract growing Industry & Operations

An arrangement in which a producer (contract grower) supplies the barn, labor, and utilities while an integrator supplies the pigs, feed, veterinary program, and transport — and owns the pigs from start to finish. Common in modern U.S. pork; the grower's revenue comes from a per-pig or per-space payment, not from selling hogs.

Creep feed Nutrition & Feed

A highly palatable starter ration offered to nursing piglets in a protected area the sow cannot access. Helps piglets learn to eat solid feed before weaning, which smooths the transition out of the farrowing room.

Crossbreeding Breeds & Genetics

Mating animals of different breeds (or different genetic lines) to exploit heterosis. Virtually all commercial U.S. market hogs come from a three- or four-way cross: typically a maternal-line gilt bred to a terminal-line boar.

Culling Health & Biosecurity

Removing an animal from the breeding herd — typically because of age, poor productivity, reproductive failure, or health issues. Cull sows usually go to processing for manufactured pork products.

Drinkers (nipple drinkers, cup drinkers) Housing & Equipment

Devices that deliver clean water on demand. Nipple drinkers (piglet-activated) are the commercial default; cup drinkers and trough systems are used in specific life stages. Flow rate matched to age matters — too slow and feed intake drops, too fast and water wastes.

Dry sow Nutrition & Feed

A non-lactating sow — either open (not yet bred back) or in the gestation stage before her next farrowing. Dry sows are fed to maintain body condition rather than to produce milk.

Dystocia Reproduction

Difficult or abnormal labor — stalled delivery, malpositioned piglets, or a fatigued sow. Attendants intervene manually or pharmacologically; unrecognized dystocia is a major cause of piglet stillbirth.

Ear notching Health & Biosecurity

Permanent piglet identification using a standardized pattern of notches cut into the ears at processing. Ear tags are used on larger pigs and breeding stock. Consistent ID is the backbone of any serious herd-performance record.

Electronic sow feeder (ESF) Nutrition & Feed

An RFID-based feeding station in a group-housed gestation pen that identifies each sow and dispenses an individualized ration. ESF lets producers house sows in groups (a welfare and regulatory consideration) while still managing body condition one sow at a time.

Enzootic pneumonia Health & Biosecurity

A chronic respiratory disease caused by Mycoplasma hyopneumoniae. Hurts average daily gain and feed efficiency; controlled primarily through vaccination, all-in/all-out production, and air-quality management.

Environmental controllers Housing & Equipment

Integrated sensor-and-actuator systems that hold a barn at target temperature, humidity, and air-exchange rate automatically, adjusting fans, inlets, curtains, and heaters. The nervous system of a modern confinement barn — a controller failure on a hot day can kill a pen of pigs within hours.

Estrus (heat) Reproduction

The recurring period (roughly 48 to 72 hours in swine) when a sow or gilt is receptive to mating and can be successfully bred. Detection of standing heat, often aided by boar exposure, is the single most important timing decision in the breeding program.

Farrowing Reproduction

The act of a sow giving birth. A normal farrowing takes three to five hours and produces a litter averaging twelve to fourteen live-born piglets on modern commercial genetics.

Farrowing crate Housing & Equipment

A specialized stall that restricts the sow's movement while giving piglets protected access to nurse, warm, and creep-feed areas. Designed to reduce crush deaths of newborn piglets; alternative systems (pens, zero-stall) trade some crush protection for more sow movement.

Farrow-to-finish operation Industry & Operations

A production system that carries pigs the full way — from breeding and farrowing, through weaning and grow-out, to market weight — under one ownership. Less common now than site-split systems (sow farm / wean-to-finish / contract finisher), but still found among independent operators.

Feed augers & conveyor systems Nutrition & Feed

Mechanized delivery lines that move feed from bulk bins through the barn and into individual feeders. Reliability matters — a failed auger in a finishing barn means pigs off-feed, and every off-feed day shows up in the close-out.

Feed bin Nutrition & Feed

A weather-tight bulk-storage vessel, usually steel, with an auger or conveyor outlet. Holds the tons of feed a barn will consume between mill deliveries.

Feed cart Housing & Equipment

A mobile hand-fed unit used to top-dress feed, deliver specialty rations to individual pens, or feed groups in barns without a fully automated line. Common in farrowing rooms, nursery wean-to-feed transitions, and smaller operations.

Feed conversion ratio (FCR) Nutrition & Feed

Pounds of feed consumed divided by pounds of weight gained — the single most-watched efficiency number in swine production. Typical whole-herd FCR for wean-to-market runs around 2.5 to 2.7; lower is better, and small improvements compound meaningfully over thousands of pigs.

Feed mill Housing & Equipment

A facility — on-farm, co-op, or commercial — that grinds, blends, and (sometimes) pellets customized rations. Large integrated operations often run their own mill; independent producers typically buy from a commercial mill and pay a toll-processing fee.

Feeder pig Lifecycle

A weaned pig, typically forty to sixty pounds, destined for grow-finish barns. Feeder pigs were historically sold at auction; today most move directly between owned or contracted sites within a production system.

Feedstuff Nutrition & Feed

Any ingredient used in a pig ration: corn, soybean meal, DDGS, wheat midds, vitamin-mineral premix, synthetic amino acids. What's available and cheap locally tends to anchor the formulation.

Finishing Lifecycle

The grow-out phase from roughly 120 pounds to market weight (about 270 to 290 pounds). Most of a pig's lifetime feed intake happens here, which is why finishing-barn design and feed efficiency are where the economics are won or lost.

Finishing barn Housing & Equipment

A barn dedicated to the grow-out phase, typically holding 1,000 to 2,400 head per building, with slat floors, mechanical ventilation, automatic feeding, and deep-pit or lagoon manure storage. Often built and financed by the producer, stocked and fed by an integrator.

Floor feeding Nutrition & Feed

Scattering feed directly on a solid or partially slatted floor rather than dispensing it in a trough or feeder. Still used in some finisher and group-sow systems; higher feed waste is the usual trade-off against simpler equipment.

Flush feeding (flushing, flush breeding) Reproduction

A short pre-breeding bump in a gilt's or weaned sow's energy intake to boost ovulation rate. A small change in nutrition with a measurable effect on litter size. Also called flush breeding.

Genetic selection Breeds & Genetics

Choosing animals to breed based on measurable traits — litter size, growth rate, feed efficiency, carcass leanness, soundness. Modern commercial swine genetics are produced by a small number of global breeding companies running multi-generational selection programs.

Gestation Reproduction

The pregnancy period in swine — roughly 114 days, often remembered as "three months, three weeks, three days." Sows spend most of this time in gestation housing, either individual stalls or (more common under newer welfare standards) group pens.

Gilt Reproduction

A young female pig that has not yet farrowed her first litter. After her first farrowing she becomes a sow.

Gilt pool Reproduction

The group of replacement gilts acclimating and cycling before they enter the breeding herd. Gilt-pool management (age at first breeding, acclimation to farm-specific pathogens, body condition) is a major lever on sow-herd productivity.

Group housing Housing & Equipment

A gestation system in which sows are kept in social pens rather than individual stalls, often with electronic sow feeders for individualized rations. Required under some state laws and many retailer welfare commitments; introduced meaningful design change across the U.S. sow-barn footprint over the last decade.

Grower Lifecycle

A pig in the mid-weight stage between nursery and finishing, typically forty to 120 pounds. "Grow-finish" is often run as a single phase in one barn.

Hand mating Reproduction

Supervised natural service in which a single boar and a single sow are put together for one breeding event. Rare in large U.S. commercial herds today; AI dominates.

Heat lamps & warming pads Housing & Equipment

Supplemental heat sources in the farrowing room's creep area. Newborn piglets cannot regulate their own body temperature well; a working heat source is the difference between piglets that survive their first day and piglets that do not.

Heat stress Health & Biosecurity

Performance-limiting physiological stress when ambient temperature rises above a pig's comfort zone. Shows up as reduced feed intake, lower average daily gain, impaired sow fertility, and in severe cases mortality. Ventilation, mist cooling, and drippers are the main mitigations.

Herd health plan Health & Biosecurity

A written, veterinarian-developed program covering vaccinations, diagnostic monitoring, biosecurity protocols, and treatment decision rules. Required documentation for many packer programs and quality-assurance certifications.

Heterosis (Hybrid vigor) Breeds & Genetics

The performance advantage seen in offspring of a cross between two distinct breeds or genetic lines — typically expressed as improved survivability, growth, and reproductive performance relative to the average of the parents. The reason commercial U.S. market hogs are almost always crossbred, not purebred.

Hog Lifecycle

A general U.S. term for a pig past weaning, often used for pigs over 120 pounds. "Hog" and "pig" are used interchangeably in most commercial contexts.

Immunocastration Health & Biosecurity

A two-dose vaccine that suppresses testicular function and boar-taint compounds in intact males. Used in some international markets as an alternative to surgical castration; U.S. adoption is limited but growing in specific supply channels.

Induced farrowing Reproduction

Hormonal initiation of labor to bring a sow to farrowing on a scheduled day — typically used to keep weekly weaning groups even and to ensure attended farrowings happen during staffed hours.

Jowl Health & Biosecurity

The cheek area of a pig. On the carcass, jowl is a specific, flavorful primal used in cured pork products (jowl bacon, guanciale).

Kune Kune Breeds & Genetics

A small, docile heritage breed originally from New Zealand, kept mostly in small-scale, pasture-based, and niche meat operations. Not a commercial-industry breed but increasingly visible on hobby farms.

Lactation Reproduction

The milk-production period between farrowing and weaning. On modern commercial systems, lactation runs roughly 18 to 24 days before piglets are weaned to the nursery.

Lagoon Housing & Equipment

A large, usually earthen basin that stores and biologically treats barn manure before it is land-applied. Lagoons are permitted and sized to state and federal environmental standards; community opposition to lagoon siting is a persistent industry issue.

Limit feeding Nutrition & Feed

Feeding a controlled ration rather than letting pigs eat free-choice. Common in gestation to hold sow body condition within a target window.

Litter Reproduction

The group of piglets born to one sow at one farrowing. "Pigs per litter" and "pigs weaned per sow per year" are the two headline productivity numbers for a breeding herd.

Manure scraper Housing & Equipment

A mechanical blade that moves solids down an alley into a cross-channel or pit. Used in barns with solid or partially slatted floors.

Manure spreader Housing & Equipment

Field equipment that applies solid or slurry manure across cropland at an agronomic rate. Manure is a real input on a hog operation — properly managed, it substitutes for purchased fertilizer; mismanaged, it is a compliance problem.

Maternal line Breeds & Genetics

A genetic line selected for traits that matter on the sow side — litter size, milking ability, longevity, conformation. Typically crossed to a terminal-line boar to produce the market hog.

Market weight Lifecycle

The live weight at which a pig is sold to a packer — currently around 280 to 290 pounds on U.S. commercial barns, though it has drifted upward over decades as packer yield economics have changed.

Mist cooling system Housing & Equipment

A fine-droplet water-spray system that cools pigs by evaporation when ambient temperature exceeds comfort thresholds. Combined with directed airflow, it is the primary mitigation for heat stress in finishing barns.

Mobile pig housing Housing & Equipment

Portable shelters for pasture-based or outdoor production. Small-scale and niche-market operations; not representative of the mainstream U.S. industry but a real and growing segment.

Mortality rate Health & Biosecurity

The percentage of pigs that die during a given production phase. Tracked separately for pre-weaning (sow farm), nursery, and grow-finish because the causes and mitigations are different in each phase.

Neonatal mortality Reproduction

Piglet deaths in the first few days after birth — primarily from crushing by the sow, chilling, starvation in weak-born piglets, and scours. The single largest source of lost productivity in the sow herd.

Non-productive sow days (NPSD) Reproduction

Days a sow is neither gestating nor lactating. Every NPSD is feed cost without biological output; reducing NPSD is a major focus of breeding-herd management.

Nursery Lifecycle

The climate-controlled barn where weaned piglets grow from about 15 pounds to 40 to 60 pounds. Temperature, starter-feed quality, and air quality all matter more here than in any later phase.

Nutrient management plan Industry & Operations

A written plan covering how manure nutrients (nitrogen, phosphorus) are balanced against crop needs on a farm's application fields. Required for CAFO permits and central to defending a hog operation against water-quality complaints.

Offal Health & Biosecurity

The edible internal organs and trim from a carcass — liver, heart, kidneys, tongue, intestines. A real, if smaller, revenue component of packer economics; also culturally central in many cuisines.

Packer Industry & Operations

A company that owns the slaughter and primary-processing plant where market hogs are harvested. The U.S. packer sector is highly concentrated — a handful of firms handle the majority of national hog slaughter.

Parity Reproduction

The number of litters a sow has produced. "Parity 1" is a sow on her first litter; productivity typically peaks somewhere between parity 3 and parity 5, then declines.

Parturition Reproduction

The clinical term for giving birth. In swine, "farrowing" is the day-to-day term; "parturition" tends to show up in veterinary and academic writing.

Pasture-raised / outdoor production Industry & Operations

Systems that provide pigs access to the outdoors for all or part of their lives, often with forage, rooting opportunity, and mobile shelter. Higher per-pound cost than confinement, slower growth, a premium retail channel; a small but visible share of U.S. production.

Pen mating Reproduction

A breeding system in which one or more boars are penned with a group of sows or gilts to breed naturally as each comes into heat. Low-labor and low-control; uncommon in larger commercial herds.

Pig handlers & loading chutes Housing & Equipment

Specialized equipment — sort boards, alleys, loading ramps — designed to move pigs calmly and without injury between pens, barns, and trucks. Low-stress handling is both a welfare standard and a measured driver of pork quality.

Pig flow Industry & Operations

The coordinated movement of groups of pigs through production phases on a scheduled cadence — breeding, farrowing, weaning, nursery, finishing. On a well-run system the sow farm, nursery, and finisher are sized so no stage is starved or jammed.

Piglet Lifecycle

A young pig from birth through weaning — typically birth to about 18 to 24 days old and 12 to 15 pounds.

Pigs per litter (liveborn) Reproduction

Average number of live-born piglets per farrowing. Modern commercial genetics routinely produce litters of twelve to fourteen or more liveborn — a major gain over the eight-to-ten-born averages of a generation ago.

Porcine Lifecycle

Pertaining to pigs (genus Sus). Used more often in veterinary, research, and regulatory writing ("porcine reproductive and respiratory syndrome") than in everyday farm conversation.

Pork producer Industry & Operations

Someone who raises pigs commercially for meat. "Producer" is the preferred self-description across the industry, from a one-family finish barn to a large integrated company.

Power washer Housing & Equipment

A high-pressure water sprayer used to clean pens and equipment between batches. Not a glamorous piece of equipment; arguably the most important biosecurity tool on the farm.

PQA Plus (Pork Quality Assurance Plus) Health & Biosecurity

A National Pork Board certification program covering food safety, animal well-being, and on-farm practices. PQA Plus certification is required or preferred by most major U.S. pork buyers.

Precision feeding Nutrition & Feed

Technology-driven feeding that delivers individualized rations based on real-time animal data — weight, growth, intake, days on feed. An extension of electronic sow feeding into the grow-finish phase; still an emerging practice in most U.S. commercial barns.

Precision livestock farming (PLF) Health & Biosecurity

Sensor-based monitoring (cameras, microphones, RFID scales, environmental sensors) combined with software to track individual animal behavior, growth, and health. The swine parallel to precision agriculture on the crop side; still maturing but already showing up in many new-build sow and finisher barns.

Quarantine Health & Biosecurity

Isolating new, returning, or sick animals from the main herd for a defined period to observe health, run diagnostics, or allow acclimation. A standard step when bringing replacement gilts onto a sow farm.

Ration Nutrition & Feed

A formulated daily feed allotment. Modern swine rations are phase-specific — lactation, gestation, nursery, grower, finisher — each tuned to the pig's nutrient requirements at that stage.

Replacement gilt Breeds & Genetics

A gilt selected to replace a culled sow in the breeding herd. Replacement rate (gilts entering per year divided by breeding inventory) tracks how quickly the herd turns over — often 40 to 50 percent a year on commercial sow farms.

Segregated early weaning (SEW) Lifecycle

Removing piglets from the sow at an early age and moving them off-site specifically to break disease transmission between generations. More common historically (10 to 21 days); current industry weaning ages cluster around 18 to 24 days.

Sire line (terminal) Breeds & Genetics

A genetic line selected for traits that matter on the market-hog side — growth rate, feed efficiency, muscle yield, lean-to-fat ratio. Crossed to a maternal-line gilt to produce the commercial finisher pig.

Slat flooring Housing & Equipment

Raised floor systems — concrete, steel, or composite — with narrow gaps that let manure drop through to a storage pit below. Dramatically cleaner pen surfaces than solid-floor alternatives; the standard in U.S. commercial finishing barns.

Slaughter weight Lifecycle

The weight at which a pig is harvested, roughly 280 to 290 pounds live weight on U.S. commercial barns. Close to, but not identical to, "market weight" — market weight is the producer-side term, slaughter weight the packer-side term.

Snout Health & Biosecurity

A pig's nose and mouth region. Highly sensitive and used for rooting behavior — a reason enrichment and environmental design matter on welfare grounds even in indoor systems.

Sorting gate Housing & Equipment

An automated gate that routes pigs based on weight, RFID tag, or sex as they pass through. Paired with a sorting scale to separate market-ready pigs from those that need more days on feed.

Sow Reproduction

A female pig that has farrowed at least one litter. Sows stay in the breeding herd as long as they are reproductively productive, typically through parities 3 to 6.

Sow stall (gestation stall) Housing & Equipment

Individual housing for pregnant sows, roughly two feet wide. Widely used historically in U.S. commercial systems; progressively replaced with group housing in response to state laws (California, Massachusetts), retailer welfare commitments, and some producer philosophy shifts.

SPF (Specific Pathogen Free) Health & Biosecurity

Stock certified free of specific named pathogens. SPF breeding herds sit at the top of the industry's health pyramid and supply replacement genetics to commercial multipliers.

Split suckling Reproduction

Temporarily removing the larger, stronger piglets from a litter so that smaller piglets can nurse without competition. A low-tech, high-value practice for saving runt piglets during the first 24 hours.

Stocking density Housing & Equipment

Number of pigs per unit of floor space. PQA Plus and welfare standards set minimum space requirements by weight class; too-tight stocking costs both performance and welfare.

Swine Lifecycle

The collective term for pigs, used across all ages and both sexes. "Swine industry," "swine veterinarian," and "swine nutrition" are all standard usage; "pig industry" sounds informal by comparison.

Tail docking Health & Biosecurity

Shortening piglets' tails in the first few days of life to reduce tail-biting in later group housing. Routine in U.S. commercial production; banned or restricted in several European countries, which has driven extensive enrichment-based alternatives there.

Temperature controller Housing & Equipment

A sub-component of the broader environmental control system that specifically manages heat — switching heaters, tunnel fans, and cool cells on target setpoints. Redundant sensors and alarming are not optional on a finishing barn; a stuck controller on a hot day is a catastrophic loss event.

Toxoplasmosis Health & Biosecurity

A parasitic infection caused by Toxoplasma gondii that can be transmitted between animals and people. Rodent and cat exclusion on the farm, along with cooked-pork handling downstream, are the main public-health safeguards.

Tusk Health & Biosecurity

The elongated, continuously growing canine teeth of a mature boar. Tusks are typically trimmed for handler safety and to prevent injury to sows and pen mates.

Vaccination Health & Biosecurity

Administering biologicals to stimulate immunity against a named pathogen — circovirus, mycoplasma, PRRS, erysipelas, leptospirosis, and others depending on the farm's health plan. Core to modern U.S. swine health management.

Ventilation system Housing & Equipment

The fans, inlets, tunnels, cool cells, and controls that move air through a barn to manage temperature, humidity, and contaminant concentration (ammonia, CO₂, dust). The single most important piece of confinement-barn engineering; failures have written off entire flows.

Vertical integration Industry & Operations

A structure in which one company owns or controls multiple stages of the production chain — genetics, feed, barns, pigs, transport, slaughter, processing. Dominant structure in U.S. broiler production and a major structural trend in U.S. pork over the last three decades.

Wallow Housing & Equipment

A mud or water area pigs use to cool themselves and protect their skin. Pigs cannot sweat effectively, so wallowing is a real thermoregulatory behavior — the indoor equivalent is drippers, misters, and cooled-air systems.

Weaner pig Lifecycle

A pig between weaning and about 40 pounds. "Weaner" is the industry term for the youngest post-weaning pigs, typically still in a nursery barn.

Weaning Lifecycle

Removing piglets from the sow and transitioning them fully onto solid feed. Modern commercial weaning ages cluster around 18 to 24 days, balancing disease-break advantages of earlier weaning against the piglet's readiness to eat dry feed.

Weigh scale Housing & Equipment

A platform or walk-through scale for tracking pig weight — used to decide marketing timing, pen sorts, and ration changes. RFID-linked scales feed weight data straight into herd-management software.

Withdrawal period Health & Biosecurity

The required interval between the last dose of a medication and slaughter, set to ensure no residues remain in the meat. Withdrawal compliance is a federal regulatory requirement and a core audit item for any pork-buyer program.

Yorkshire Breeds & Genetics

A widely used maternal-line breed, white with erect ears, known for large litters and good milking ability. Common as a foundation line in U.S. commercial crossbreeding programs.

Zoonosis Health & Biosecurity

A disease that can be transmitted from animals to humans — swine influenza, salmonellosis, toxoplasmosis, leptospirosis. On-farm biosecurity and worker PPE practices are aimed at both herd health and public-health risk.