Aspergillosis in Goats: Fungal Respiratory or Abortion Disease
- Aspergillosis is a fungal disease caused most often by Aspergillus species, especially Aspergillus fumigatus, that goats usually pick up from the environment rather than from another goat.
- In goats, it may show up as respiratory disease with nasal discharge, breathing trouble, weight loss, or poor thrift, and it can also be linked to late-gestation abortion through placental infection.
- See your vet promptly if a goat is struggling to breathe, has persistent nasal discharge, seems weak, or if a pregnant doe aborts. Placenta and fetal tissues can be very important for diagnosis.
- Diagnosis usually requires more than one test because Aspergillus can contaminate samples from the environment. Your vet may recommend exam, bloodwork, imaging, culture, cytology, and sometimes tissue biopsy or necropsy.
- Treatment depends on how sick the goat is and whether disease is localized or widespread. Care may include antifungal medication, supportive care, pregnancy-loss workup, and management changes to reduce mold exposure.
- Typical US cost range is about $150-$500 for an initial farm visit and basic workup, $500-$1,500 for standard diagnostics and treatment, and $1,500-$4,000+ for hospitalization, imaging, repeated testing, or intensive care.
What Is Aspergillosis in Goats?
Aspergillosis is a fungal infection caused by Aspergillus molds, which are common in soil, bedding, hay, grain, and other decaying organic material. In goats, the fungus is usually inhaled, so disease often starts in the nose or lungs. In some cases, the infection can spread beyond the respiratory tract. It is considered an opportunistic infection, meaning heavy exposure or stress can make disease more likely.
In goats, aspergillosis is best thought of as a possible respiratory disease, abortion cause, or less commonly a localized infection elsewhere. Published goat reports describe severe nasal disease with breathing difficulty and mucopurulent discharge, while broader veterinary references on ruminants link Aspergillus to placentitis and abortion after the organism enters through the respiratory or oral tract and spreads through the bloodstream. Because Aspergillus is common in the environment, finding it on a test does not always prove it is the cause of illness.
For pet parents, the practical takeaway is this: a goat with chronic nasal signs, unexplained respiratory illness, or an abortion event may need fungal disease on the rule-out list. Your vet will also want to consider more common problems such as bacterial pneumonia, lungworms, caseous lymphadenitis, listeriosis, chlamydial abortion, toxoplasmosis, and nutritional or housing issues.
Symptoms of Aspergillosis in Goats
- Persistent nasal discharge, sometimes thick or mucopurulent
- Noisy breathing or partial nasal obstruction
- Increased breathing effort or open-mouth breathing
- Cough or reduced exercise tolerance
- Weight loss, poor appetite, or poor body condition
- Fever may be present but is not always obvious
- Depression or reduced milk production
- Late-gestation abortion or stillbirth
- Retained placenta or abnormal placental tissue after abortion
- Skin lesions around the nose or ears in rare localized cases
Respiratory aspergillosis can range from subtle to severe. Some goats show chronic nasal discharge, noisy breathing, or gradual weight loss. Others may become acutely distressed if the nasal passages or lungs are badly affected. In pregnant does, the first obvious sign may be abortion, especially later in gestation.
See your vet immediately if your goat is breathing hard, stretching the neck to breathe, cannot keep up with the herd, or if a pregnant doe aborts. Save the fetus and placenta if you can do so safely and keep them cool, not frozen, until your vet gives instructions. Those samples can make diagnosis much more accurate.
What Causes Aspergillosis in Goats?
The cause is infection with Aspergillus mold, most often A. fumigatus, though other species can be involved. These fungi are widespread in the environment and grow well in damp, dusty, or moldy organic material. Goats are usually exposed by inhaling spores from contaminated air, feed, hay, straw, or bedding. Heavy spore exposure matters, especially in enclosed or poorly ventilated housing.
Risk tends to rise when feed or bedding quality slips. Moldy hay, spoiled grain, wet bedding, and dusty barns can all increase fungal burden. Stress, transport, crowding, poor ventilation, concurrent illness, and immune compromise may also make infection more likely or more severe.
For abortion cases, veterinary references in large ruminants describe Aspergillus reaching the placenta after entry through the respiratory or oral tract and then spreading through the bloodstream. That same general mechanism is used to explain fungal placentitis in goats as well. This is one reason your vet may ask detailed questions about feed storage, recent weather, barn moisture, and whether other animals have had respiratory signs or pregnancy losses.
How Is Aspergillosis in Goats Diagnosed?
Diagnosis usually starts with a careful history and physical exam. Your vet may ask about moldy hay, spoiled grain, damp bedding, ventilation, recent transport, herd stress, and whether any does have aborted. Because many goat respiratory and reproductive diseases can look similar, aspergillosis is rarely diagnosed from signs alone.
Testing often combines several pieces of evidence. Depending on the case, your vet may recommend bloodwork, nasal or airway samples for cytology and culture, thoracic imaging, ultrasound in pregnant does, and sometimes endoscopy or biopsy if a nasal mass is suspected. In abortion cases, the placenta, fetal stomach contents, lung, liver, and skin lesions can be especially useful samples.
One important detail is that Aspergillus is common in the environment, so a positive culture by itself may reflect contamination. Your vet usually wants to match culture or PCR results with lesions seen on cytology, histopathology, or necropsy. That combination helps separate true infection from an incidental environmental finding.
Treatment Options for Aspergillosis in Goats
Spectrum of Care means you have options. Here are treatment tiers at different price points.
Budget-Conscious Care
- Farm-call or clinic exam
- Focused history on feed, bedding, ventilation, and pregnancy status
- Basic supportive care such as fluids, anti-inflammatory medication if appropriate, and nursing care
- Immediate removal of moldy hay, grain, or bedding
- Isolation from dusty housing and closer monitoring of breathing, appetite, and temperature
- Discussion of whether humane euthanasia is kinder in severe, poor-prognosis cases
Recommended Standard Treatment
- Exam plus targeted diagnostics such as CBC/chemistry, fecal testing if lungworms are possible, and respiratory or abortion workup
- Sampling of nasal discharge, airway secretions, placenta, fetus, or affected tissue for cytology, culture, and/or histopathology
- Systemic antifungal treatment when your vet believes fungal infection is likely enough to treat
- Supportive care including fluids, nutritional support, anti-inflammatory medication, and treatment of secondary bacterial infection when indicated
- Pregnancy-loss evaluation and herd-level management review if abortion occurred
- Recheck exam and monitoring of response over days to weeks
Advanced / Critical Care
- Hospitalization or referral-level care
- Advanced imaging or endoscopy when available
- Repeated bloodwork and intensive monitoring
- Aggressive systemic antifungal therapy, sometimes using newer azoles selected by your vet
- Oxygen support or intensive respiratory care for severe breathing compromise
- Biopsy, necropsy, or specialized laboratory testing to confirm invasive disease
- High-level reproductive diagnostics and herd investigation after abortion clusters
Cost estimates as of 2026-03. Actual costs vary by location, clinic, and individual case.
Questions to Ask Your Vet About Aspergillosis in Goats
Bring these questions to your vet appointment to get the most out of your visit.
- Based on my goat’s signs, how likely is aspergillosis compared with bacterial pneumonia, lungworms, or another cause?
- Which samples would give us the best chance of a real diagnosis in this case?
- If this doe aborted, should we submit the placenta and fetus, and how should I store them until transport?
- Do you recommend antifungal treatment now, or should we wait for test results?
- What supportive care can I safely provide at home while we wait on results?
- Are there feed, bedding, or ventilation problems on my farm that may be increasing mold exposure?
- What signs would mean this goat needs emergency care or humane euthanasia?
- Do other goats in the herd need monitoring, testing, or management changes after this case?
How to Prevent Aspergillosis in Goats
Prevention focuses on reducing mold exposure and supporting overall herd health. Offer clean, dry hay and grain, and do not feed visibly moldy or musty material. Store feed off the ground in a dry area with good airflow, rotate stock so older feed is used first, and discard wet or spoiled bedding promptly. Good ventilation matters, especially in winter when barns are more closed up.
Barn management also helps. Reduce dust, avoid overcrowding, and keep kidding and maternity areas clean and dry. If a doe aborts, contact your vet, isolate the area, and handle fetal tissues and placenta carefully so they can be submitted for testing. Quick cleanup lowers contamination and helps protect the rest of the herd.
Because aspergillosis is usually an environmental disease, prevention is less about stopping goat-to-goat spread and more about feed quality, housing, and early response. If you have repeated respiratory problems or abortions, ask your vet to review forage sources, storage conditions, mineral program, parasite control, and ventilation. Small management changes can make a meaningful difference over time.