Pig Health in Australia

Pig keepers in Australia operate under biosecurity obligations that are genuinely more structured than for most other livestock species, reflecting the serious consequences a pig disease outbreak could have for Australia's pork industry and broader agricultural biosecurity. Anyone keeping even a small number of pigs — including hobby and backyard keepers, not just commercial producers — should understand these obligations before bringing pigs onto their property.

In most Australian states and territories, keepers of pigs are required to register their property and pig-keeping activity with the relevant state department of agriculture, and this requirement frequently applies regardless of how few pigs are kept. This registration exists specifically to enable rapid disease tracing in the event of an outbreak. Requirements and the specific registration process vary by state, so check your current state department of agriculture or biosecurity authority website before acquiring pigs, as this is a legal obligation rather than an optional recommendation.

Several serious pig diseases are classified as notifiable in Australia, meaning any suspected case must be reported to authorities by law. These include Foot and Mouth Disease and African Swine Fever — both exotic to Australia and not currently present, but considered catastrophic risks that the entire biosecurity system, including the swill feeding ban discussed in the feeding guide, is structured to prevent. Any pig showing unusual illness, particularly with symptoms like severe fever, vesicles (blisters) around the mouth or feet, sudden unexplained deaths, or unusual neurological signs, should prompt an immediate call to your vet and, if advised, to the relevant state biosecurity hotline.

The Emergency Animal Disease Watch Hotline (1800 675 888) is available 24/7 across Australia for reporting suspected notifiable diseases in any livestock species, including pigs. Familiarise yourself with this number before you need it — rapid reporting is one of the most important things any keeper can do to protect the broader industry.

Vaccination requirements and recommendations for pigs vary by region, herd history, and whether pigs are kept in isolation or in contact with other herds (such as at shows or through bought-in stock). Common vaccinations used in Australian pig herds include protection against erysipelas (a bacterial disease causing skin lesions and, in severe cases, sudden death or chronic arthritis) and leptospirosis, both of which are present in the Australian pig population and pose a genuine risk to unvaccinated herds.

Breeding sows are commonly vaccinated against parvovirus and erysipelas before joining, since parvovirus infection during pregnancy can cause significant reproductive losses including stillbirths and small litters. Discuss an appropriate vaccination program with a vet experienced in pig health for your specific situation — a single backyard pair of weaners destined for the freezer has very different vaccination needs to an open breeding herd with regular introductions of new stock.

Pigs are susceptible to a range of internal parasites including roundworms (Ascaris suum), whipworms, and lungworms, particularly in outdoor and pasture-based systems where exposure to parasite eggs and larvae in soil is higher than in clean indoor systems. Regular faecal testing and a sensible, evidence-based worming program — rather than indiscriminate blanket treatment — is the soundest approach, mirroring the targeted selective treatment philosophy now standard in sheep, goat, and alpaca parasite management.

External parasites of concern include sarcoptic mange mites, which cause intense itching, skin thickening, and significant welfare and production impact if left untreated, and lice, which are less serious but still warrant treatment when identified. Both are effectively managed with appropriate treatments available through rural suppliers or on veterinary prescription, and outdoor pigs should be inspected periodically for skin condition and signs of parasite irritation (excessive rubbing or scratching against fences and structures is a common early sign of mange).

Good general hygiene — clean, dry bedding, regular wallow refreshing, and avoiding overcrowding — reduces parasite burden across the board and is the foundation of any sound parasite management approach, alongside targeted treatment based on actual signs or testing rather than calendar-based blanket dosing.

Heat stress is, as discussed in the care guide, a leading cause of acute illness and death in Australian outdoor pigs during summer. Signs include rapid or laboured breathing, reluctance to move, reddened skin (particularly visible in pale breeds), and in severe cases collapse. Immediate cooling — wetting down with cool water and moving to shade — combined with prompt veterinary attention for any pig that does not improve quickly, is the appropriate response. Prevention through reliable shade and wallow access is far more effective than treating an established case.

Sunburn in pale-skinned breeds is a genuine welfare concern beyond cosmetic appearance — sunburned skin is painful and prone to secondary infection. Reliable shade for any pale-skinned pig kept outdoors in Australian conditions is essential, not optional.

Lameness can result from a range of causes including injury, joint infection (sometimes following erysipelas infection), or foot problems related to housing surfaces. Any pig showing persistent lameness, particularly with swelling or heat in a joint, warrants veterinary assessment, since some causes (such as erysipelas-related arthritis) have specific treatment requirements.

Farrowing complications including prolonged or difficult birth, retained piglets, or a sow failing to produce adequate milk all warrant prompt attention given the time-sensitive nature of piglet survival in the immediate post-birth period. Keepers running a breeding operation should establish a relationship with a vet experienced in pig reproduction before the first farrowing, not during an emergency.

Sudden, unexplained illness or death in any pig should always prompt consideration of notifiable disease as a possibility, particularly in a herd with any recent introduction of new stock or any unusual exposure. This is not intended to cause alarm over routine illness, but Australian pig keepers should hold a higher index of suspicion for genuinely unusual presentations than keepers of other livestock species might, given the serious notifiable diseases that remain a real, if currently absent, risk to the Australian herd.

Call your veterinarian immediately for: any pig showing signs consistent with a notifiable disease (severe sudden illness, vesicles around the mouth or feet, unexplained sudden death in the herd, unusual neurological signs); any farrowing complication including prolonged labour without progress; any pig that is down and unable to rise; severe heat stress that does not improve rapidly with cooling; and any case of suspected serious injury.

Call your veterinarian within the same day for: persistent lameness, particularly with joint swelling; loss of appetite lasting more than a day in an otherwise normal-seeming pig; respiratory signs such as persistent coughing; skin conditions that do not respond to basic treatment; and any case where you are genuinely uncertain what you are seeing.

Establish a relationship with a vet experienced in pig health, and understand your property's registration and biosecurity obligations, before you bring pigs home rather than during your first health concern. Most rural and mixed-practice vets across Australia have some pig experience, but a vet who specifically understands commercial and small-scale pig production will give you better guidance on routine management questions as well as emergencies.