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51 Cards in this Set
- Front
- Back
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What does Eucoleus spp. cause in chickens?
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Thickening and inflammation of crop wall
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What is Eucoleus spp. AKA?
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Capillaria spp.
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Clinical sign of Eucoleus spp.
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Emaciation
- Causes feed bioavailability drop substantially |
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Which parasite in chickens only exists in the trophozoite stage?
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Trichomonas gallinae
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Which parasite is passed in regurgitated crop milk?
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Trichomonas gallinae
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Pathology of Trichomonas gallinae
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Yellow buttons on body
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Primary DH of Trichomonas gallinae
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Pigeon
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Two locations that Dispharynx nasuta localizes
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- Proventriculus
- Esophagus |
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Unique morphological characteristic of Dispharynx nasuta
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4 sinuous anterior cordons
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3 DHs of Dispharynx nasuta
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- Chicken
- Turkey - Pigeon |
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Pathology of Dispharynx nasuta
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- Nodules
- Ulcers - Catarrh of proventricular wall |
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Which avian parasite has spherical females?
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Tetrameres spp.
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Location of Tetrameres spp.
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Proventriculus wall
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What does Tetrameres spp. feed on?
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Blood
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What avian parasite causes dietary deficiencies?
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Ascaridia spp.
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4 clinical signs of Ascaridia spp.
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- Anemia
- Diarrhea - Emaciation - Obstruction |
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Most important tapeworm in avians
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Raillietina echinobothrida
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Which avian parasite has 50% mortality rate? (2)
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- Raillietina echinobothrida
- Heterakis gallinarum via Histomonas meleagridis |
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3 pathological signs of Raillietina echinobothrida
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- Hyperplastic and catarrhal enteritis
- Emaciation - Diarrhea |
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Most economically important poultry disease
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Coccidiosis
- Eimeria |
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Three things the degree of clinical signs observed with Eimeria is related to
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- Number of sporulated oocysts
- Immune status - Species of coccidia |
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Where do Giardia adhere to?
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Surface of enterocytes
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What does Heterakis gallinarum vector?
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Histomonas meleagridis
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What avian parasite vectors Histomonas meleagridis?
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Heterakis gallinarum
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What does Histomonas meleagridis cause?
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Blackhead
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Mortality rate of Histomonas meleagridis
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50%
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What is blackhead characterized by? (2)
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- Pathognomonic liver lesions
- Cyanosis |
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Which avian parasite grows larger as its host increases in size?
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Syngamus trachae
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Which avian parasite is seen grossly as a Y?
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Syngamus trachae
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Migration of Syngamus trachae
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Hepatotracheal
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Pathology of Syngamus trachae
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Asphyxiation due to tracheal occlusion
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What type of birds are schistosomes found in?
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Aquatic birds
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Which avian parasite causes cutaneous larval migrans?
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Schistosomes
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What causes malaria?
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Plasmodium gallinaceum
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Vector of Plasmodium gallinaceum
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Culex mosquito
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Vector of Leucocytozoon
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Simulium
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Which parasite causes large, distorted RBCs and WBCs?
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Leucocytozoons
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Two parasitic species that have gamonts in RBCs
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- Leucocytozoon
- Haemoproteus |
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What differentiates Haemoproteus gamonts from Leucocytozoon?
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Doesn't distend RBCs
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Two avian parasites that are only a problem in stressed birds
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- Haemoproteus
- Parahaemoproteus |
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What avian parasite causes large cysts in duck breast muscles?
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Sarcocystis rileyi
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What avian parasite destroys lung endothelium?
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Sarcocystis falcatula
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What avian mite causes chickens to go lame?
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Knemidocoptes mutans
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What avian mite induces feather pullings?
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Knemidocoptes gallinae
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What avian mite causes malformed beaks?
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Knemidocoptes pilae
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Which avian parasite requires treating of host and environment?
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Ornithonyssus spp.
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What avian species can get huge build up near the vents?
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Ornithonyssus sylvarium
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What's unique about Argas persicus LC?
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Only on host to feed at night
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What can transmit Borrelia anserina?
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Argas persicus
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What type of lice is found on avians?
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Chewing lice only
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Important flea on avians
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Echidinophaga gallinacea
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