Changes

Fasciolosis (view source)

814 bytes removed , 14:28, 5 August 2010

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#Reduced weight-gain and/or wool growth and/or milk production

#Loss of body tissue (i.e. weight-loss); hypoalbuminaemia → reduced plasma oncotic pressure → oedema

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~~=== Disease manifestations ===~~

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*Large numbers of metacercariae ingested over a short period of time leads to acute disease

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*Smaller numbers ingested over a longer period of time leads to chronic disease

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*'''Feed intake'''

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**Fluke infections cause reduced food intake

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~~NOTE: chronic fasciolosis occurs at a time of year when animals are on a low plane of nutrition. This combined with the reduced food~~

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~~intake causes a significant effect on the development and severity of clinical and subclinical fasciolosis.~~

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*'''Species susceptibility'''

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**The proportion of flukes that reach the bile ducts is determined mainly by

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***The fibroplastic potential of the liver

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***The effectiveness of the protective immune responses (which are ineffective in sheep)

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**Therefore, establishment rate is

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~~'''sheep>cattle>pig'''~~

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=== Geographical distribution of disease ===

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