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<FlashCard questions="14">
<FlashCard questions="20">
|q1=What species of ascarid affect poultry?
|q1=What species of ascarid affect poultry?
|a1=
|a1=
*Via the egg as the adults migrate through the lumina of the large intestine and cloaca and end up in the oviduct where they are then incorporated into the hen’s egg
*Via the egg as the adults migrate through the lumina of the large intestine and cloaca and end up in the oviduct where they are then incorporated into the hen’s egg
*Eating earthworms that have ingested ''A. galli'' eggs
*Eating earthworms that have ingested ''A. galli'' eggs
|l17=Ascaridia - Poultry#Epidemiology
|l17=Ascaridia - Poultry#Epidemiology
|q18=How can ''A.galli'' be diagnosed?
|a18=
Ascaridia can be diagnosed by the above clinical, faecal examination or by post-mortem (PM). Evidence of enteritis/haemorrhagic enteritis can be seen on PM; as large numbers of larvae in the histotropic phase can cause extensive damage to the glandular epithelium. Adhesion of the mucosal villi can also be noted as a result of the proliferation of mucous-secretory cells.
Adult worms can also cause damage to the epithelia as a result of pressure atrophy of the villi, causing occasional necrosis of the mucosal layer. In chronic infections the intestinal wall can become distended as muscle tone is lost.
|l18=Ascaridia - Poultry#Diagnosis