[Experimental ascariasis in the pigeon (Columba livia) caused by Ascaridia columbae (Gmelin ): research on the capacity of the larvae of Ascaridia. Download Citation on ResearchGate | On Jul 21, , T. Bhaskara Rao and others published Ascaridia columbae infection in a pigeon. The life cycle of Ascaridia columbae, the large intestinal roundworm of the pigeon , with descriptions of the preparasitic and parasitic stages, has been studied.

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Ascaridia Dujardin The prepatent period time between infection and first eggs shed is 6 columbbae 8 weeks, depending on the worm species and the host. They destroy the tissues around them. Ascaridia dissimilis infects mainly turkey. Ascaridia infections are especially harmful for young chicken up to 3 months old, especially if they suffer from vitamin or protein deficiency.

File:Ascaridia columbae ExpelledByAnthelminticjpg – Wikimedia Commons

Lesser known species such as A. Earthworms can ingest large amounts of infective eggs and act as mechanical vectors. Egg quality can also be impaired e. Males have a sucker close to the anus and a copulatory bursa with two equal spicules f or attaching to the female during copulation.

Alternatively, post mortem examination should demonstrate enteritis – caused by the emergence of larvae from the mucosa.

Biology, prevention and control. It is much more abundant in traditional farming with outdoor run than in columbaw production facilities. So far no vaccine is available against Ascaridia worms.


The nematodes of vertebrates.

Adult worms are also harmful. The eggs of A.

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They also have a nervous system but no excretory organs and no circulatory systemi. Ascarid eggs are resistant to desiccationpersist for a long time in the environment, and remain directly infective. All three species exhibit a direct lifecycle involving the release of eggs into the soil and the subsequent reingestion of them in food.

Clinical signs include loss of weight and appetite, unthriftiness, pale combs and wattles, droopy wings, wasting, diarrhea and anemia. Therefore, control of infection involves the prevention of contamination of feeders and drinkers with feces by raising them off the groundpasture rotation, and regular dosing with the above-mentioned treatments, especially in young birds.

To learn more about vaccines against parasites of livestock and pets c lick here. Biological control of Ascaridia worms i. The gastrointestinal tract may also be distended in chronic cases. The columbar caused by Ascaridia worms is called ascaridiasis. All these ascarid eggs are similar in appearance to Heterakis gallinarum.

Members of the genus are primarily intestinal parasites of birds.

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Ascaridia galli, Ascaridia columbae, Ascaridia dissimilis. Por favor,activa el JavaScript! Nematodes from the genus Ascaridia parasitizing psittaciform birds: Subsequently they penetrate into the gut’s lining where they spend 1 to 7 weeks and molt again.

Poultry Health and Disease. Females are longer than males. Ingested eggs release the larvae in the gut’s lumen where they molt and remain for about 10 days.


To ensure that they remain worm-free the animals have to be dewormed periodically, depending on the local epidemiological, ecological and climatic conditions.

The worms have a tubular digestive system with two openings, the mouth and the anus. They compete for nutrients, can cause mechanical damage of the gut’s wall, and may obstruct the intestine. Some compounds with a narrower spectrum are also effective against these worms, e. Older birds become progressively resistant, which reduces both the harm and the reproduction of the worms, i.

For birds kept outdoors it is advisable to restrict their access to humid environments where earthworms are usually more abundant. Infection may be diagnosed on clinical signs and fecal examination.

Birds become infected after eating infective eggs, either directly with contaminated food or water, or indirectly through infected earthworms. Domestic Animals of North America.

Pasture rotation is also recommended. Ascaridia – Poultry, reviewed and published by WikiVet at ascarisia This means that if an anthelmintic fails to achieve the expected efficacy against Ascaridia worms it is most likely that ascaridiw the product was unsuited for the control of these wormsor it was used incorrectly.