# Tail Biting Prevention in Pigs


## Key Takeaways

- Tail biting is a multifactorial disorder driven by environmental stressors (e.g., ammonia >10 ppm, overcrowding <0.75 m²/pig >100 kg), nutritional imbalances (e.g., low crude fiber <4%, feed particle size <700 µm), health issues (respiratory/enteric infections), and social instability (mixing unfamiliar pigs).
- Early detection is critical, focusing on behavioral cues like tail posture (tail down precedes visible lesions by 24-48 hours) and active observation twice daily, with intervention triggered if >5% of pigs in a pen score ≥2 on a tail lesion scale.
- Environmental management and enrichment are foundational; this includes maintaining air quality (<10 ppm ammonia), appropriate stocking density, providing biologically relevant rooting/chewing materials (e.g., straw, hay) replenished daily, and ensuring adequate water flow (≥0.5 L/min for growers).
- A structured prevention program integrates risk assessment, early detection, systematic environmental audits, consistent enrichment provision, and mandatory veterinarian involvement for health reviews and outbreak management.
- Tail docking is a palliative measure that does not address underlying causes and should not be a routine preventive strategy; veterinary consultation is essential for diagnosis, treatment of wounds (isolation, antiseptic, analgesia/antibiotics), and management of recurrent outbreaks.

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Tail biting in pigs is a multifactorial behavioural disorder with no single cause or cure, effective prevention requires an integrated approach that addresses risk factors, enables early observation, conducts systematic environmental review, provides appropriate enrichment, maintains routine health checks, and ensures veterinarian involvement. Prevention strategies must be tailored to the specific production system and should never rely solely on tail docking, which is a palliative measure that does not address underlying causes (WOAH Terrestrial Animal Health Code). This article summarises the evidence-based principles for controlling tail biting in undocked or docked herds, drawing on peer-reviewed studies and official animal health guidance.

## At a Glance

| Risk Factor Category | Examples | Preventive Management Actions |
|----------------------|----------|-------------------------------|
| Environmental | Inadequate ventilation, high ammonia, poor flooring, overcrowding | Regular air quality monitoring, stocking density ≤0.75 m²/pig >100 kg, clean dry bedding |
| Nutritional | Feed particle size, amino acid imbalances, abrupt diet changes | Consistent feed formulation, ad libitum access, check feeders daily |
| Health | Respiratory disease, enteric infections, lameness | Routine health checks by stockpeople, prompt treatment, veterinarian review of morbidity |
| Social | Mixing unfamiliar pigs, barren pens, lack of foraging substrate | Maintain stable groups, provide long-stem straw or equivalent rooting material |
| Genetic | High lean-gain lines with low fibre tolerance | Select for robust temperament, consult breeding company for tail-biting susceptibility indexes |

These factors are interrelated, a failure in one domain can trigger tail biting even if others are well managed (FAO Animal Production and Health).

## System Context and Planning Decisions

Prevention begins before pigs enter the facility. Housing design must accommodate the intended group size and pig category. For fattening pigs from weaning to slaughter, pens should allow each animal to retreat and avoid tail damage. Research from heavy pig production (weaning to 170 kg) shows that tail lesions increase when space allowance falls below 0.65 m² per pig and when slatted floors without bedding predominate (Frequency of tail lesions and risk factors for tail biting in heavy pig production from weaning to 170 kg live weight). When planning new buildings or renovating existing ones, consult the USDA National Animal Health Monitoring System recommendations for ventilation rates and pen dimensions.

Group stability is a critical planning decision. Pigs introduced to a new pen require at least three days to establish hierarchy, mixing during the growing phase elevates stress and tail-biting risk (Merck Veterinary Manual). Where multi-site production is used, pig flow should minimise re-grouping. All-in/all-out management by room instead of by building further reduces social disruption.

Nutritional planning must account for fibre, electrolytes, and feed presentation. Diets with low crude fibre (<4%) are consistently associated with oral-manipulative behaviours redirected to tails (Injurious tail biting in pigs: How can it be controlled in existing systems without tail docking?). Ensure that commercial diets contain sufficient insoluble fibre (e.g., 5,8% crude fibre for growers) and that feed particle size is ≥700 µm to avoid gastric ulcers and tail-biting triggers. Feeders must deliver pellets or meal without gaps that allow feed withdrawal for more than two hours.

## Core Management Framework

A structured prevention programme rests on five pillars: risk assessment, early detection, environmental audit, enrichment provision, and veterinary partnership. Each pillar is documented below with practical points for stockpeople and herd health veterinarians.

### Risk Assessment

The first step is identifying which groups are most vulnerable. Weaners (3,10 weeks of age) and growers in the 30,60 kg range show the highest incidence of tail lesions (Prevention and treatment of tail biting in weaned piglets). Use a standardised scoring system (e.g., 0 = intact tail, 1 = bite marks, 2 = fresh wound, 3 = swelling/partial loss) weekly for each pen. Record results on a shed map to detect spatial patterns. If more than 5% of pigs in a pen score ≥2, implement immediate remedial action.

### Early Detection

Observation must be active, not passive. Walk pens twice daily at the same times (e.g., 30 minutes after feed delivery). Look for pigs held back from the feeder, pigs with raised tails that show bite marks, and any squealing during social interactions. Recent evidence confirms that early detection of tail posture (tail tucked between legs) precedes visible lesions by 24,48 hours (PubMed record 42277947). Train all stockpeople to report tail posture changes using a simple two-category scale: "tail up" (normal) versus "tail down" (risk). Escalate to the lead stockperson or veterinarian when more than two pens show ≥20% tail-down pigs on a single day.

### Environmental Audit

Conduct a formal walk-through audit every two weeks using a checklist adapted from the USDA APHIS Livestock and Poultry Disease guidelines. Measure ammonia concentration at pig height using a suitable detector, levels should remain below 10 ppm. Inspect flooring for sharp edges, excessive wetness, and manure accumulation. Assess temperature and humidity: pigs in the finishing stage perform optimally at 15,20°C, temperatures above 22°C with poor ventilation increase tail biting incidents. Check water flow rates at nipple drinkers , each pig requires ≥0.5 litres per minute for growing pigs, with at least one drinker per ten animals. If any parameter falls outside acceptable range, correct it within 24 hours.

### Enrichment Provision

Rooting and chewing materials must be biologically relevant and replenished daily. Straw, hay, or silage in racks or dispensers provides foraging opportunities that reduce tail-directed behaviour (Managing undocked pigs - on-farm prevention of tail biting and attitudes towards tail biting and docking). Avoid small, immobile objects (e.g., plastic balls in slatted pens) that lose novelty within 24 hours. The approved FAO Animal Production and Health guidelines recommend at least two different enrichment items per pen, one edible and one deformable. Rotate substrates weekly to maintain interest. For farms that cannot use straw, supply jute sacks, untreated wood blocks, or compressed alfalfa cubes at a rate of two per pen.

### Health Checks and Veterinarian Involvement

Tail biting outbreaks frequently follow health disturbances, especially respiratory disease and parasitic infection. Conduct a full clinical examination of any pig showing signs of lethargy, coughing, diarrhoea, or lameness before managing its tail wounds. Blood sampling for acute-phase proteins and faecal testing for endoparasites should be performed when tail biting prevalence exceeds 10% in a room (PubMed record 42076733). The attending veterinarian must review health records quarterly to correlate morbidity with tail lesion data. Routine vaccination protocols for Mycoplasma hyopneumoniae and Lawsonia intracellularis, where relevant, may reduce tail biting indirectly by preserving gut health and respiratory comfort.

When tail biting does occur, treat affected animals immediately (isolate, clean wound, apply antiseptic, and if necessary, administer anti,inflammatory and antimicrobial therapy as prescribed by the veterinarian). Never dock tails as a reaction to an outbreak, docking does not prevent recurrence and may reinforce the behaviour (The long and short of it: A review of tail docking in farm animals). Instead, double down on enrichment, ventilation, and group management for the entire affected room.

## Facilities and Environment

Housing design and environmental management form the foundation of tail biting prevention. Inadequate ventilation, high ammonia concentrations, excessive stocking density, and poor flooring condition are consistently associated with elevated tail biting risk (FAO Animal Production and Health, https://www.fao.org/animal-production/en/). Efforts to control tail biting in existing systems without tail docking emphasize that environmental complexity is a primary protective factor (Injurious tail biting in pigs: How can it be controlled in existing systems without tail docking?, https://api.elsevier.com/content/abstract/scopus_id/84906315967). Producers should maintain air quality parameters that avoid respiratory irritation, as coughing and sneezing within a pen can trigger exploratory oral behaviour directed at pen mates. Temperature fluctuations, draughts, and inadequate thermal comfort also increase general arousal and frustration, raising the probability of tail-directed activity.

Pen flooring must be inspected for slat gaps, sharp edges, or areas of excessive wear that could cause injury or discomfort. A review of tail docking in farm animals notes that environmental triggers for tail biting include barren pens, absence of manipulable substrates, and competition for resources (The long and short of it: A review of tail docking in farm animals, https://api.elsevier.com/content/abstract/scopus_id/80054719011). Enrichment provision is a regulatory requirement in several jurisdictions. Effective materials include substrates that are novel, destructible, and chewable: straw, hay, wood shavings, or specifically designed manipulable objects. The Merck Veterinary Manual advises that enrichment should be provided from weaning onward and replenished regularly to maintain interest (Merck Veterinary Manual, https://www.merckvetmanual.com/). Unsuitable or contaminated enrichment may itself become a source of disease transmission, therefore routine cleaning and replacement schedules are necessary.

Lighting intensity and photoperiod also contribute to behavioural stability. Continuous bright light or sudden transitions can induce restlessness. Pigs benefit from a diurnal cycle with adequate dark periods for rest. Ventilation systems must be calibrated to remove moisture and noxious gases while avoiding drafts at pig level. Carbon dioxide and hydrogen sulfide concentrations, though less commonly measured, should be monitored if manure storage is within the building.

## Nutrition and Water

Feeding plans and water availability are critical modifiable factors. Tail biting incidence has been linked to nutritional imbalances, particularly deficiencies in salt, protein, or minerals (PubMed record 42277947, https://pubmed.ncbi.nlm.nih.gov/42277947/). In practice, any abrupt change in diet composition or feeding schedule can precipitate dissatisfaction and redirect foraging motivation toward pen mates. Access to feed must be sufficient in both quantity and distribution, restricted feeding or competition over limited feeder space creates frustration that may escalate to tail biting.

Water quality and flow rate should be verified at least twice weekly. Stale or unpalatable water, inadequate number of drinkers, or incorrect drinker height reduce intake and elevate stress. For weaned piglets, the use of additional water sources,such as wet-dry feeders or supplementary nipple drinkers,can alleviate competition. A study on prevention and treatment of tail biting in weaned piglets identifies that providing ad libitum access to a balanced diet and clean water is a prerequisite for any subsequent intervention (Prevention and treatment of tail biting in weaned piglets, https://api.elsevier.com/content/abstract/scopus_id/39749097980). When tail biting outbreaks occur, immediate nutritional review is warranted, including assessment of feed particle size, pelleting quality, and ingredient composition.

## Production-Stage Decisions

Tail biting risk varies across production stages, with particular vulnerability at weaning, after mixing, and during the finishing phase. The frequency of tail lesions in heavy pig production from weaning to 170 kg live weight demonstrates that risk accumulates over time if early warning signs are neglected (Frequency of tail lesions and risk factors for tail biting in heavy pig production from weaning to 170 kg live weight, https://api.elsevier.com/content/abstract/scopus_id/84952988678). Weaning creates a dual stressor: separation from the sow and regrouping with unfamiliar pigs. Mixing strategies that maintain litter groups or minimise pen disruption reduce social instability. For pigs moved to new facilities, a period of environmental familiarisation before mixing is beneficial.

In systems where tail docking has been phased out, proactive management of tail health is essential. Managing undocked pigs requires continuous attention to enrichment quality, stocking density, and early detection (Managing undocked pigs - on-farm prevention of tail biting and attitudes towards tail biting and docking, https://api.elsevier.com/content/abstract/scopus_id/85028345839). Stocking density recommendations from the WOAH Terrestrial Animal Health Code indicate that space allowance must accommodate normal resting and exploratory behaviours (WOAH Terrestrial Animal Health Code, https://www.woah.org/en/what-we-do/standards/codes-and-manuals/terrestrial-code-online-access/). Overcrowding increases unavoidable contact between pigs and reduces the distance needed for a bitten pig to escape.

Heavier pigs in the finishing period may become more active or more competitive as space per pig decreases relative to body weight. Producers should monitor tail posture,tails held tightly under the body or clamped between legs often precede visible lesions. Tails carried low or tucked are early behavioural signs of pain or fear. A change in tail posture in a single pig can indicate the onset of a damaging chain reaction.

## Records and Monitoring

Systematic record keeping enables detection of temporal and spatial patterns in tail biting. Parameters to document include tail lesion scores (e.g., mild, moderate, severe), affected pen, date, pig age, and any concurrent changes in feed or environment. The USDA National Animal Health Monitoring System provides frameworks for tracking health and behavioural outcomes on swine operations (USDA National Animal Health Monitoring System, https://www.aphis.usda.gov/livestock-poultry-disease/nahms). Records should be reviewed weekly to identify pens with recurrent issues or to evaluate the effectiveness of enrichment changes.

Practical monitoring involves daily visual inspection of all pens, focusing on tail carriage and the presence of fresh blood or swelling. Early identification of a single tail bite may prevent a widespread outbreak if the bitten pig is removed to a hospital pen and the enriching materials in the pen are renewed. Environmental monitoring logs for temperature, humidity, ammonia, and ventilation rate are also valuable. Correlating biting events with environmental lapses (e.g., a filter blockage or water failure) informs corrective maintenance.

## Welfare, Worker and Food Safety

Tail biting constitutes a serious welfare issue because the resulting wounds cause pain, infection, and impaired mobility. In severe cases, osteomyelitis or ascending infection can develop. The WOAH and USDA APHIS recognise that tail biting compromises production efficiency and animal wellbeing (USDA APHIS Livestock and Poultry Disease, https://www.aphis.usda.gov/livestock-poultry-disease). Worker safety is also affected: pigs that have been subjected to tail biting may become more reactive and difficult to handle. Soiled or wet floors from enrichment systems that are not properly drained increase slip risk for staff. Protective footwear and clear protocols for entering pens with tail-bitten pigs are recommended.

Food safety concerns arise from carcass trim or condemnation at slaughter due to abscesses, septicaemia, or deep tissue damage associated with tail lesions. The presence of tail bite damage has been linked to increased carcass contamination risk. Therefore, prevention reduces the need for antimicrobial treatments and lowers the chance of drug residues. Meat inspectors routinely note tail lesions, and processors may apply penalties for affected carcasses.

## Failure Patterns

Common failures in tail biting prevention include delayed response after the first bite, reliance solely on tail docking as a prophylactic measure, and inconsistent enrichment provision. When enrichment is available but not replaced regularly, pigs lose interest and redirected foraging behaviours return. Overcorrection by adding multiple enrichment items simultaneously may reduce novelty and fail to reduce biting. Another failure pattern is ignoring environmental gradients, such as the higher biting incidence frequently observed at the end of a barn where ventilation is impaired or near a window where light intensity fluctuates.

Preventive efforts can also fail when herd health is suboptimal. Respiratory disease, enteric disorders, and lameness all contribute to increased competition and behavioural instability. A health check programme that includes routine veterinary inspection can identify disease predisposing factors before tail biting escalates. Veterinarian involvement is recommended when outbreaks exceed a predefined threshold or when environmental corrections do not reduce lesion incidence.

## Practical Monitoring and Veterinarian Involvement

Daily checks of tail status, environmental parameters, and enrichment condition are the core of practical monitoring. A designated staff person should be trained to score tails on a simple three-point system for normal, mild erosion, and lesion present. Pens with more than one pig displaying a lesion require immediate investigation and intervention. The veterinarian should be consulted to rule out underlying disease, to advise on analgesia or treatment for wounded pigs, and to review the overall risk factor checklist. Prophylactic antimicrobial use is not a substitute for environmental or nutritional correction. The role of the veterinarian includes assisting with record interpretation, recommending enrichment renewal schedules, and auditing environmental control systems.

By integrating environmental management, nutritional stability, early detection, and professional support, tail biting can be substantially reduced in both docked and undocked herds. The evidence base supports a multifactorial approach in which no single measure is sufficient, sustained attention across all domains is necessary.

## Health Observation and Early Detection

Systematic health observation remains the cornerstone of tail biting prevention once pigs are at risk. Commercial farms should implement standardized tail scoring protocols at least twice weekly, with increased frequency during known high-risk periods such as weaning, regrouping, or environmental transitions. The USDA National Animal Health Monitoring System provides frameworks for collecting lesion data that can be linked to management records [USDA National Animal Health Monitoring System](https://www.aphis.usda.gov/livestock-poultry-disease/nahms). Observable signs include fresh blood, swelling, missing tissue, or behavioral indicators such as tail-in-mouth activity, increased agitation, or withdrawal of bitten pigs from the group. Early intervention is possible only when observers are trained to recognize subtle changes before severe injury occurs [Injurious tail biting in pigs: How can it be controlled in existing systems without tail docking?](https://api.elsevier.com/content/abstract/scopus_id/84906315967).

Biosecurity protocols should isolate affected animals immediately to prevent further wound contamination and to break the behavioral chain of biting. Separate pens or hospital areas with soft bedding and reduced competition for resources are advised. The WOAH Terrestrial Animal Health Code emphasizes that any outbreak of injurious behavior warrants a veterinary biosecurity review, particularly when wounds may become infected with opportunistic pathogens [WOAH Terrestrial Animal Health Code](https://www.woah.org/en/what-we-do/standards/codes-and-manuals/terrestrial-code-online-access/). Cleaning and disinfection of pens previously housing biters is recommended, though evidence for residual environmental triggers remains uncertain.

## Diagnostic and Veterinary Escalation

A veterinarian should be involved when tail biting persists despite environmental and enrichment adjustments. The Merck Veterinary Manual advises that recurrent outbreaks may indicate underlying disease processes such as respiratory infections, gastric ulcers, or subclinical metabolic disturbances that lower thrift and increase susceptibility [Merck Veterinary Manual](https://www.merckvetmanual.com/). Diagnostic evaluation should include necropsy of affected pigs, serology for common respiratory pathogens, and feed and water analysis for toxins or nutrient imbalances [PubMed record 42277947](https://pubmed.ncbi.nlm.nih.gov/42277947/). The presence of secondary infections, such as tail abscesses or septicemia, requires immediate antimicrobial therapy under veterinary guidance.

Escalation also applies to the decision to dock tails. Tail docking is a painful procedure that does not address the underlying causes of biting. The review literature consistently states that docking should not be used as a routine preventive measure but only as a temporary management tool when all other options have failed [The long and short of it: A review of tail docking in farm animals](https://api.elsevier.com/content/abstract/scopus_id/80054719011). In jurisdictions where docking is permitted, it must be performed with analgesia and by trained personnel. Veterinary oversight for pain management and record keeping is mandatory under many national welfare codes.

## Uncertainty in Prevention Strategies

Despite decades of research, several areas of tail biting prevention remain poorly understood. The multifactorial nature of the behavior means that a single intervention rarely resolves outbreaks. Individual pig susceptibility, possibly related to genetics or early life experience, is not yet predictable at the farm level. Evidence for the efficacy of specific enrichment materials is inconsistent, while straw is widely recommended, its effectiveness depends on presentation, quantity, and renewal frequency [Managing undocked pigs - on-farm prevention of tail biting and attitudes towards tail biting and docking](https://api.elsevier.com/content/abstract/scopus_id/85028345839). The interaction between tail biting and other injurious behaviors, such as ear biting and flank biting, adds further complexity.

Pig producers must accept a degree of uncertainty and adopt a continuous improvement approach. Recording outbreaks, environmental conditions, and management changes over time can help identify farm-specific triggers. The FAO Animal Production and Health guidelines encourage participatory research with veterinarians and advisors to tailor prevention plans [FAO Animal Production and Health](https://www.fao.org/animal-production/en/). Definitive prevention protocols applicable to all systems are unlikely to emerge, instead, iterative risk assessment is required.

## Sustainability and Long-Term Management

Tail biting prevention is an integral component of sustainable pig production. Reducing the reliance on tail docking aligns with consumer expectations and regulatory trends in many regions. The economic costs of tail biting include reduced growth, increased mortality, veterinary treatment, and carcass condemnation. Long-term prevention through environmental enrichment, optimal stocking density, and robust health management can improve overall herd performance and reduce the need for therapeutic interventions [Frequency of tail lesions and risk factors for tail biting in heavy pig production from weaning to 170 kg live weight](https://api.elsevier.com/content/abstract/scopus_id/84952988678).

Transitioning to undocked tail systems requires investment in housing modifications, especially for fully slatted floors. Partial slatted or straw-based systems are associated with lower tail biting prevalence but are not feasible in all production contexts. The USDA APHIS guidance on livestock and poultry disease includes resources for designing alternative housing that minimizes behavioral stressors [USDA APHIS Livestock and Poultry Disease](https://www.aphis.usda.gov/livestock-poultry-disease). Sustainability also involves training stockpeople in behavioral observation and positive human-animal interactions, which reduce fear and stress in pigs [Prevention and treatment of tail biting in weaned piglets](https://api.elsevier.com/content/abstract/scopus_id/39749097980).

## Frequently Asked Questions

1. **Can tail biting be completely eliminated from a pig herd?**
   Complete elimination is unlikely under commercial conditions. The goal is reduction to a low, manageable prevalence through continuous risk factor management.

2. **What nutritional factors are known to contribute to tail biting?**
   Deficiencies in salt, amino acids, or fiber have been associated with oral behavioral problems. However, evidence from controlled trials is limited, and ration adjustments should be made only after veterinary consultation [PubMed record 42076733](https://pubmed.ncbi.nlm.nih.gov/42076733/).

3. **How should a pig with a severe tail wound be treated?**
   Isolate the pig, clean the wound with a mild antiseptic, and apply a topical antibiotic. Systemic antibiotics may be indicated. Analgesia should be provided if available. Consult a veterinarian for wound management protocols.

4. **Is tail docking a humane practice?**
   Tail docking causes acute and possibly chronic pain. The scientific consensus is that it is not a preventive measure for biting and should be avoided. If performed, analgesia is essential [The long and short of it: A review of tail docking in farm animals](https://api.elsevier.com/content/abstract/scopus_id/80054719011).

5. **What role does genetics play in tail biting susceptibility?**
   Some studies indicate heritable differences in tail biting behavior, but practical selection indices are not yet established. Breeding programs may incorporate docility traits in the future.

6. **How can producers monitor for tail biting without daily examination of every pig?**
   Walk-through observation using a standardized scoring system for the whole pen can be efficient. Focus on pigs that are isolated, hunched, or showing avoidance behavior. Automated image analysis systems are under development but are not widely available.

7. **Does increasing stocking density always increase tail biting risk?**
   Higher stocking density is a known risk factor, but interactions with floor type, ventilation, and feeding space are critical. Reducing density alone may not resolve outbreaks if other stressors remain.

8. **What is the best enrichment to prevent tail biting?**
   Substrate enrichment with straw or peat is most consistently effective. Novel objects such as ropes, balls, or chains provide temporary interest but easily become soiled or ignored. Enrichment must be changed or replenished frequently to maintain interest [Managing undocked pigs - on-farm prevention of tail biting and attitudes towards tail biting and docking](https://api.elsevier.com/content/abstract/scopus_id/85028345839).

## Veterinary Notice

This information is intended for educational purposes only. Tail biting is a complex welfare and production issue that requires a herd-specific approach. Always consult a licensed veterinarian for diagnosis of underlying disease, pain management protocols, treatment of infected wounds, and decisions regarding tail docking or other interventions. The evidence base continues to evolve, producers are encouraged to seek updated guidance from their veterinary advisor and from official animal health authorities such as the WOAH and USDA APHIS.

## Related Farming Guides

- [Pig Farming Breeding Farrowing Nursery Grow Finish Nutrition And Biosecurity](/knowledge/animal-farming/swine/pig-farming-breeding-farrowing-nursery-grow-finish-nutrition-and-biosecurity)
- [Farrowing House Preparation And Sow Care](/knowledge/animal-farming/swine/farrowing-house-preparation-and-sow-care)
- [Newborn Piglet Care During The First 48 Hours](/knowledge/animal-farming/swine/newborn-piglet-care-during-the-first-48-hours)
- [Pig Farm Biosecurity Plan](/knowledge/animal-farming/swine/pig-farm-biosecurity-plan)
- [Production Records For Pig Farms](/knowledge/animal-farming/swine/production-records-for-pig-farms)

## Related Clinical & Scientific Guides

* [Pig Enrichment Programs and Behavior Monitoring](/knowledge/animal-farming/swine/pig-enrichment-programs-and-behavior-monitoring)
* [Swine Handling Facility Design for Safe Pig Movement](/knowledge/animal-farming/swine/swine-handling-facility-design-safe-pig-movement)
* [Swine Feeding Management for Grow-Finish Pigs](/knowledge/animal-farming/swine/swine-feeding-management-for-grow-finish-pigs)


## References and Further Reading

- [FAO Animal Production and Health](https://www.fao.org/animal-production/en/)
- [WOAH Terrestrial Animal Health Code](https://www.woah.org/en/what-we-do/standards/codes-and-manuals/terrestrial-code-online-access/)
- [USDA APHIS Livestock and Poultry Disease](https://www.aphis.usda.gov/livestock-poultry-disease)
- [Merck Veterinary Manual](https://www.merckvetmanual.com/)
- [USDA National Animal Health Monitoring System](https://www.aphis.usda.gov/livestock-poultry-disease/nahms)

> This article is educational and is not a substitute for veterinary diagnosis, treatment, public-health guidance, or regulatory reporting.