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Tapir gastrointestinal parasitism (roundworms)
Gastrointestinal parasitism caused by roundworms (nematodes) is a very common condition in the Brazilian tapir, whether it lives in the wild or in captivity in a zoo.\nThese parasites live in the intestine and stomach of the animal. They fe...
What is it?
Gastrointestinal parasitism caused by roundworms (nematodes) is a very common condition in the Brazilian tapir, whether it lives in the wild or in captivity in a zoo.\nThese parasites live in the intestine and stomach of the animal. They feed partly on its blood or its nutrients, which gradually weakens the tapir.\nIn young or already weakened tapirs, this parasitosis can become serious and impact growth and general condition.
Commonly observed signs
These signs are neither exhaustive nor specific. Only a veterinarian can establish a diagnosis.
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The signs are often discreet at first, especially in healthy adults.\nWe may observe diarrhea or loose stools, sometimes accompanied by worms visible to the naked eye.\nThe animal may lose its appetite, gradually lose weight and have a duller coat than usual.\nBelly bloating, general depression and stunted growth are possible in young, heavily infested tapirs.\nIn severe cases, anemia (lack of red blood cells) can settle in, making the animal weak and lethargic.
When to consult without delay
This list does not replace veterinary advice. It gathers situations that justify a prompt consultation.
Causes and risk factors
Several families of roundworms (nematodes) can parasitize the digestive tract of the tapir, in particular digestive strongyles similar to those encountered in other large herbivores and perissodactyls (such as horses or rhinoceroses).\nThe eggs of these parasites are emitted in the stools and contaminate the soil, water or vegetation. The tapir recontaminates itself by grazing or drinking in a contaminated environment.
Young tapirs, less immune, are more sensitive than a healthy adult.\nAn overcrowded enclosure, poorly cleaned or with a dirty water point encourages the accumulation of eggs and larvae in the environment.\nStress, an unbalanced diet or a concomitant disease can weaken the natural defenses and aggravate the infestation.\nThe hot and humid climate, as can be encountered in certain latitudes, favors the survival of larvae in the environment. exterior.
Transmission
Contamination occurs via the fecal-oral route: the tapir ingests eggs or larvae of parasites present on vegetation, in water or on the ground soiled by the feces of infested animals.
Diagnosis and care
Diagnosis is the veterinarian's responsibility, based on clinical examination and laboratory tests. Care is decided case by case.
The veterinarian first relies on the symptoms observed and the animal's history.\nThe definitive diagnosis is based on an examination of the stools under a microscope (coproscopy), which makes it possible to detect and sometimes identify parasite eggs.\nIn certain cases, a blood test can be taken to assess the impact (anemia, general condition) of the infestation.
Treatment
Treatment is based on the administration of antiparasitics belonging to the family of broad-spectrum dewormers, chosen and dosed solely by the veterinarian based on the species of parasite identified and the weight of the animal.\nSupportive treatment (improved diet, supplementation) may be associated in the event of general weakening.
Treatment depends on the cause and the animal's condition: it must be determined by a veterinarian. No self-medication.
Prevention
Regular cleaning of the enclosure and frequent removal of droppings greatly limits soil contamination.\nRotation of enclosures, when possible, allows the area to be "rested" and reduces the parasitic load.\nRegular veterinary checks, with examination of stools (coproscopy), make it possible to monitor the level of infestation before the appearance of symptoms.\nA suitable deworming program, decided by the animal park veterinarian, is part of good management practices. sanitary.
Possible complications
A massive, untreated infestation can lead to severe anemia, stunted growth in young tapirs, and a general weakening that makes the animal more vulnerable to other diseases.\nIn rare, severe cases, especially in young animals, intestinal obstruction by large numbers of worms is possible.
When to see a veterinarian
Presence of persistent diarrhea or abnormal stools
Worms visible in stool
Progressive weight loss despite a preserved or reduced appetite
Dull coat, depression or unusual decrease in activity
Growth retardation in a young tapir
Prognosis
The prognosis is generally good when the infestation is detected early and treated appropriately.\nIn young animals or in the event of a high untreated parasitic load, the development may be more worrying, with a lasting impact on growth and general condition.
Frequently asked questions
Can tapir parasitism be transmitted to humans?
Tapir digestive roundworms are generally specific to large herbivores and are not considered transmissible to humans under usual conditions.
How do I know if my tapir is infested without doing an analysis?
It is not possible to know for sure without analysis. Symptoms such as diarrhea or weight loss can have other causes: only a coproscopy carried out by a veterinarian confirms the diagnosis.
Should you deworm a tapir even if it appears healthy?
Yes, a regular preventive deworming program, decided by the park veterinarian, is recommended because a tapir can harbor parasites without showing visible signs.
Is this disease common in tapirs in captivity?
Yes, gastrointestinal parasitism is among the most commonly encountered digestive conditions in tapirs, both in the wild and in zoos.
References
WOAH — Organisation mondiale de la santé animale (ex-OIE)
ESCCAP — European Scientific Counsel Companion Animal Parasites
Content reviewed by the TunisieVet editorial team · Updated 11 August 2026
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