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Phalaris Staggers: Part 1 - Chronic Phalaris Staggers

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Sheep grazing freshly-shooting Phalaris tuberosa particularly following the break of a dry season, often develop neurological disorders commonly known as `Phalaris Staggers'. The outward manifestations of this disease have been recorded in two films intended for veterinary officers.

A complete lack of muscular co-ordination is obvious in all chronically- affected sheep observed during an outbreak of the disease in the south- east of South Australia in October, 1951. Knees and fetlocks either remain flexed or tend to buckle under, and sheep move about with a propping gait or on their knees. Exertion or agitation leads to respiratory distress.

Produced in 1952.

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