Sarcoptic Mange in Pigs

These information sheets are provided for your interest. They should not replace veterinary advice from your veterinary surgeon.

Whilst every effort is taken to ensure the accuracy and completeness of the information provided, your specific circumstances must be discussed before advice can be given.

Mange in pigs is most commonly of the Sarcoptic form, caused by infestation with Sarcoptes scabei var suis, which are burrowing mites. The result of infestation is intense pruritus (itchiness) which causes self-excoriation and loss of condition due to reduced feed intake. The lesions will appear a few weeks after initial infestation. The lesions develop from raw patches, particularly around the eyes, snout and in the axillae (armpits). Scabs and crustiness of this skin results from excoriation as a result of the itching. Hair loss is common and may be the most noticeable feature. Aural haematomas can result from head shaking. Avermectins are given subcutaneously and will clear mites over a period of 1-2 weeks. If severe crusty lesions are present in the ears of animals, the treatment should be repeated after 14 days to ensure coverage of mites which are found in the ear wax. Avermectins can also be used in control, with treatment most effectively given prior to entry into the farrowing accommodation, to prevent infestation of the piglets.

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