[affected.gif] Animals most affected
Cattle, sheep, goats.

[etiology.gif] Etiology
Ingestion of soil
(Containing insoluble aluminium salts, in particular aluminium silicates.)

Ingestion of dried beet pulp
(Aluminium sulphate is used as an additive in the pressing process), problems arise if:

[toxic.gif] Toxicity
The toxicity of aluminium is well documented but has not been adequately described in animals, nor has the likely etiology for such poisonings been well reported. Aluminium is thought to interfere with the absorption of phosphates (rendering them insoluble) and possibly the absorption of magnesium.
Toxicity is increased when there is a deficiency of phosphorus. Toxic doses are not well known, in ppm aluminium/dry matter in the diet:

In very general terms
TD ruminants 1000
  monogastric animals 200

Aluminium sulphate
TD ruminants 300

Aluminium silicate
TD ruminants >2000

[clinical.gif] Clinical features

[lesions.gif] Lesions

[treatm~1.gif] Treatment
Supplement the diet with phosphates.