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Find me a Vet Ascaridiasis
Large Intestinal Roundworms, Ascaridia, Nematodes
Ascaridiasis is the infestation of
Ascaridia galli (roundworms) in the intestines of ducks and other waterfowl. A. galli are large roundworms that can infect all species of birds but are found most commonly in domestic fowl such as chicken and sometimes turkey, geese, guinea fowls and ducks. A. galli are the largest nematode found in birds and can be found worldwide.
Free range or backyard waterfowl are commonly infected with A. galli. The parasite is transmitted to birds by ingesting different vector species that are carrying A. galli eggs (such as earthworms), feed or water contaminated by bird feces, or A. galli eggs from contaminated soil.
Disease from A. galli occurs when when normal body functions are impaired due to infestation of the parasite in the bird's intestines. The severity is related to the degree of impairment to the duck's body. Most common clinical signs of infection include weight loss, reduced growth rate or feed efficiency, diarrhea, decreased egg production in laying hens, enteritis and anemia. There is also speculation that A. galli may be associated with transmission of Salmonella and reovirus infections.
Heavy infestation of A. galli can cause intestinal blockage, resulting in death. The severity is dependent on the number of worms present. Ducks with a large number of worms can suffer from blood loss, slow growth, inflammation of the intestine and a greater risk of mortality.
Laying eggs with pale egg yolks Worms found in eggs or feces
History Clinical signs Fecal exam Necropsy
Method Method Summary Piperazine salts administered into feed (0.2-0.4%) or water (0.1-0.2%), or as a single treatment (50–100 mg/bird) Albendazole Levamisole 25-50 mg/kg SC administered as a single dose Flubendazole 2.4 kg/ton in feed for 7 days Fenbendazole 20 mg/kg PO administered as a single dose Ivermectin 200 ug/kg SC or PO as a single dose Hygromycin B
Practice strict sanitation of feeders and waterers to reduce contamination with bird feces If the birds are confined to a pen outside, rotate access to different areas regularly to minimize build up of worm populations Segregate birds by age groups, with particular care applied to sanitation of young birds waterfowl should receive a diet which includes supplementation with vitamin A and B complex vitamins. Lack of these vitamins makes the birds more susceptible to worm infections.
Paul, B. T., et al. Survey of Helminth Parasites of Free Range Muscovy Ducks (Anas platyrynchos) Slaughtered in Gombe, North Eastern Nigeria. Journal of Poultry Science (2015) Hafiz AB, Muhammad AR, Muhammad AA, Imran AK, Abdul A, Zahid M, Shaukat HM. Prevalence of Ascaridia galli in white leghorn layers and Fayoumi-Rhode Island red crossbred flock at government poultry farm Dina, Punjab, Pakistan. Trop Biomed. (2015) Wongrak K, Das G, von Borstel UK, Gauly M. Genetic variation for worm burdens in laying hens naturally infected with gastro-intestinal nematodes British Poultry Science (2015) Ayaz M, Junaid M, Subhan F, Ullah F, Sadiq A, Ahmad S, Imran M, Kamal Z, Hussain S, Shah SM. Heavy metals analysis, phytochemical, phytotoxic and anthelmintic investigations of crude methanolic extract, subsequent fractions and crude saponins from Polygonum hydropiper L. BMC Complement Alternate Medicine (2014) Karumari, R. Jothi, et al Anthelmintic efficacy of Sesbania grandiflora leaves and Solanum torvum fruits against the nematode parasite Ascaridia galli American Journal of Ethnomedicine (2014) Pleidrup A J, Norup LR, Dalgaard TS, Kaiser P, Permin A, Schou TW, VadekÃ¦r DF, Jungersen G, Sorensen P, Juul-Madsen HR. Cytokine gene expression profiles in chicken spleen and intestinal tissues during Ascaridia galli infection. Veterinary Parasitology (2014) Katakam KK, Mejer H, Dalsgaard A, Kyvsgaard NC, Thamsborg SM Survival of Ascaris suum and Ascaridia galli eggs in liquid manure at different ammonia concentrations and temperatures. Veterinary Parasitology (2014) Ferdushy T, Schou TW, Norup LR, Dalgaard TS, Thamsborg SM, Nejsum P, Permin A, Juul-Madsen HR, Kyvsgaard NC. Acquisition of resistance after continuous infection with Ascaridia galli in chickens. Parasitology (2014) Das G, Gauly M. Response to Ascaridia galli infection in growing chickens in relation to their body weight. Parasitology Research (2014) Pleidrup J, Dalgaard TS, Norup LR, Permin A, Schou TW, Skovgaard K, VadekÃ¦r DF, Jungersen G, SÃ¸rensen P, Juul-Madsen HR. Ascaridia galli infection influences the development of both humoral and cell-mediated immunity after Newcastle Disease vaccination in chickens. Vaccine (2014) Tomza-Marciniak A, Pilarczyk B, Tobianska B, Tarasewicz N. Gastrointestinal parasites of free-range chickens Ann Parasitol. (2014) S Stinson, A Mete Popular Backyard Flock program reduces biosecurity risks of amateur production California Agriculture (2013) Bazh EK, El-Bahy NM. In vitro and in vivo screening of anthelmintic activity of ginger and curcumin on Ascaridia galli. Parasitology Research (2013) Ferdushy T, Luna-Olivares LA, Nejsum P, Roepstorff AK, Thamsborg SM, Kyvsgaard NC. Population dynamics of Ascaridia galli following single infection in young chickens. Parasitology (2013) Norup LR, Dalgaard TS, Pleidrup J, Permin A, Schou TW, Jungersen G, Fink DR, Juul-Madsen HR. Comparison of parasite-specific immunoglobulin levels in two chicken lines during sustained infection with Ascaridia galli. Veterinary Parasitology (2013) Abdelqader A, Qarallah B, Al-Ramamneh D, Das G. Anthelmintic effects of citrus peels ethanolic extracts against Ascaridia galli. Veterinary Parasitology (2012) Radfar MH, Khedri J, Adinehbeigi K, Nabavi R, Rahmani K. Prevalence of parasites and associated risk factors in domestic pigeons (Columba livia domestica) and free-range backyard chickens of Sistan region, east of Iran. Journal of Parasite Diseases (2012) Hoglund J, Morrison DA, Engstrom A, Nejsum P, Jansson DS. Population genetic structure of Ascaridia galli re-emerging in non-caged laying hens. Parasites and Vectors Journal (2012) Hussen H, Chaka H, Deneke Y, Bitew M. Gastrointestinal helminths are highly prevalent in scavenging chickens of selected districts of Eastern Shewa zone, Ethiopia. Pakistan Journal of Biological Science (2012) Squires S, Fisher M, Gladstone O, Rogerson S, Martin P, Martin S, Lester H, Sygall R, Underwood N. Comparative efficacy of flubendazole and a commercially available herbal wormer against natural infections of Ascaridia galli, Heterakis gallinarum and intestinal Capillaria spp. in chickens Veterinary Parasitology (2012) Katoch R, Yadav A, Godara R, Khajuria JK, Borkataki S, Sodhi SS. Prevalence and impact of gastrointestinal helminths on body weight gain in backyard chickens in subtropical and humid zone of Jammu, India. Journal of Parasite Diseases (2012) Das G, Abel H, Humburg J, Schwarz A, Rautenschlein S, Breves G, Gauly M. The effects of dietary non-starch polysaccharides on Ascaridia galli infection in grower layers. Parasitology (2012) Hoglund J, Jansson DS. Infection dynamics of Ascaridia galli in non-caged laying hens. Veterinary Parasitology (2011) Braga FR, Araujo JV, Araujo JM, Frassy LN, Tavela AO, Soares FE, Carvalho RO, Queiroz LM, Queiroz JH. Pochonia chlamydosporia fungal activity in a solid medium and its crude extract against eggs of Ascaridia galli. Journal of Helminthology (2011) Robbins KM, Ye W, Fletcher OJ. Identification of Ascaridia numidae in guinea fowl (Numida meleagris) and association with elevated mortality. Avian Diseases (2011) Velkers FC, Dieho K, Pecher FW, Vernooij JC, van Eck JH, Landman WJ. Efficacy of allicin from garlic against Ascaridia galli infection in chickens. Poultry Science (2011) Flinchum, Gwen, BS, MS, DVM Chapter 36: Management of Waterfowl Clinical Avian Medicine. Vol. 6 (2014)