Aflatoxicosis in Alpaca: Moldy Feed and Liver Damage
- See your vet immediately if your alpaca may have eaten moldy grain, moldy pellets, spoiled hay, or damp feed with visible fungal growth.
- Aflatoxicosis is toxin-related liver injury caused by aflatoxins, most often from Aspergillus molds growing in stored feeds such as corn and other grains.
- Common warning signs include reduced appetite, lethargy, weight loss, diarrhea, weakness, jaundice, and unusual bleeding or bruising in severe cases.
- Diagnosis usually combines feed history, bloodwork showing liver injury, and testing of suspect feed. Some cases also need ultrasound or liver sampling.
- Treatment focuses on stopping exposure, supportive care, fluids, nutrition, and monitoring liver function and clotting. Prognosis depends on dose, timing, and how sick the alpaca is at presentation.
What Is Aflatoxicosis in Alpaca?
Aflatoxicosis is poisoning caused by aflatoxins, a group of toxins made by certain molds, especially Aspergillus flavus and Aspergillus parasiticus. These toxins can grow in feed ingredients such as corn, other grains, cottonseed products, and mixed feeds when storage conditions are warm or damp. In alpacas, the liver is the main organ affected, so illness often shows up as signs of liver injury, poor appetite, weakness, and sometimes bleeding problems.
Camelid-specific research is limited, but veterinary toxicology references describe aflatoxicosis across animal species as a serious hepatotoxin exposure, and camelids are known to develop important liver disease from several toxic and metabolic causes. That means your vet will usually treat suspected aflatoxin exposure in an alpaca as a true medical concern, especially if more than one animal has been eating the same feed.
Some alpacas become sick quickly after a high exposure. Others develop more subtle problems after eating lower levels over days to weeks. Even when feed does not look obviously moldy, aflatoxins may still be present, so a normal appearance does not fully rule out risk.
Symptoms of Aflatoxicosis in Alpaca
- Reduced appetite or feed refusal
- Lethargy or depression
- Weight loss or poor body condition
- Diarrhea or soft stool
- Weakness or reluctance to move
- Jaundice or yellow discoloration of mucous membranes
- Swelling, dehydration, or poor rumen/C1-C2 fill from not eating
- Unusual bruising, nosebleeds, bloody stool, or prolonged bleeding
- Neurologic changes such as dullness, head pressing, or incoordination from severe liver failure
- Sudden death in severe herd exposures
See your vet immediately if your alpaca has stopped eating, seems weak, shows yellowing of the eyes or gums, or has any bleeding. Liver toxins can progress fast, and alpacas are especially vulnerable to complications when they go off feed. If several alpacas were exposed to the same batch of feed, ask your vet whether the whole group should be examined and whether the feed should be tested.
What Causes Aflatoxicosis in Alpaca?
Aflatoxicosis happens when an alpaca eats feed contaminated with aflatoxins. The toxins are produced by molds that grow on susceptible feedstuffs, especially corn and other grains, but contamination can also involve pelleted feeds, concentrates, and some byproduct ingredients. Risk rises when feed is stored with excess moisture, poor ventilation, heat, insect damage, or long storage times.
Visible mold increases concern, but it is not required for toxicity. Some contaminated feed looks normal, and toxin levels can vary from one part of a bag, bin, or bale to another. That is one reason herd outbreaks can be confusing at first.
Young animals, pregnant or lactating animals, and alpacas already stressed by transport, parasites, poor nutrition, or other illness may be less able to tolerate toxin exposure. If an alpaca already has liver disease or is not eating well, aflatoxin exposure can be even more dangerous.
How Is Aflatoxicosis in Alpaca Diagnosed?
Your vet usually starts with a careful history and physical exam. The most helpful clues are recent access to moldy or poorly stored feed, more than one exposed animal, and signs that fit liver injury. Bloodwork often looks for liver enzyme changes, bilirubin elevation, dehydration, and clotting problems. In camelids, liver-related abnormalities may include increased AST, alkaline phosphatase, and bile acids, although results can vary with the stage and severity of disease.
Diagnosis is often presumptive at first. That means your vet may begin treatment based on the exposure history and lab findings before every test result is back. Feed testing is very important because confirmation of aflatoxicosis generally depends on finding toxic aflatoxin levels in the consumed feed and linking that exposure to the alpaca's illness.
Additional testing may include CBC, chemistry panel, coagulation testing, ultrasound, and in selected cases liver biopsy or necropsy if an animal dies. Your vet will also want to rule out other causes of liver disease in alpacas, such as hepatic lipidosis, toxic plants, copper problems, infectious disease, or parasitism.
Treatment Options for Aflatoxicosis in Alpaca
Spectrum of Care means you have options. Here are treatment tiers at different price points.
Budget-Conscious Care
- Urgent farm call or clinic exam
- Immediate removal of suspect feed and replacement with clean forage
- Basic bloodwork if available
- Oral or subcutaneous fluids in mild cases
- Nutritional support and close appetite monitoring
- Herd-level advice on isolating and saving feed samples for testing
Recommended Standard Treatment
- Exam and repeat monitoring by your vet
- CBC, chemistry panel, and liver-focused bloodwork
- Coagulation testing if bleeding risk is suspected
- IV or more intensive fluid therapy
- Assisted feeding or nutritional support to prevent worsening metabolic stress
- Medications chosen by your vet for GI support, liver support, and symptom control
- Submission of suspect feed for mycotoxin testing
Advanced / Critical Care
- Hospitalization with intensive monitoring
- Serial bloodwork to track liver values, hydration, glucose, and clotting
- Ultrasound and advanced diagnostics
- Aggressive IV fluids and nutritional support
- Plasma or blood product support if severe coagulopathy or hemorrhage develops
- Management of hepatic encephalopathy, severe weakness, or multi-organ complications
- Necropsy and herd-risk planning if there is a death in the group
Cost estimates as of 2026-03. Actual costs vary by location, clinic, and individual case.
Questions to Ask Your Vet About Aflatoxicosis in Alpaca
Bring these questions to your vet appointment to get the most out of your visit.
- Do my alpaca's signs fit toxin-related liver disease, or are there other likely causes?
- Which blood tests will help you assess liver damage and clotting risk today?
- Should we test the suspect feed, and how should I collect and store a sample?
- Do the other alpacas that ate this feed need exams or screening bloodwork?
- Is my alpaca stable for farm treatment, or is hospitalization the safer option?
- What supportive care can help maintain appetite and hydration while the liver recovers?
- What warning signs mean I should call right away or transport my alpaca urgently?
- How long should we monitor liver values before deciding whether recovery is likely?
How to Prevent Aflatoxicosis in Alpaca
Prevention starts with feed quality and storage. Buy feed from reputable sources, rotate inventory, and keep grain and pellets dry, cool, and protected from leaks, condensation, rodents, and insects. Clean bins regularly so old feed does not stay trapped in corners or under fresh feed. If hay, grain, or pellets smell musty, feel damp, or show clumping or visible mold, do not feed them until your vet or feed professional advises you.
Because aflatoxins may be present even when feed looks normal, prevention also means watching storage conditions and herd patterns. If several alpacas suddenly eat poorly after a new batch of feed is opened, stop that feed and call your vet. Save the bag tag, lot number, and a representative sample for possible testing.
For farms that use grain or mixed rations, ask your veterinarian and feed supplier about mycotoxin risk management during humid seasons or after crop stress. Testing suspect feed is often more useful than guessing. Early action can protect the rest of the herd and may prevent severe liver damage.