Tapioca
Introduction
Tapioca is a tuberous root of a sub-tropical shrub which is processed before feeding to destroy the cyanide present. It is grown for it's starch content and the roots are peeled, chopped and dried after harvesting. The material may come as a meal or pellet depending on the processing method. Its usage depends on price and availability of cereal. Availability may also be affected in Europe by import quotas.
Origin
Tropical and Sub Tropical Far East, Africa and S. America.
Nutritional Information
Low in protein and oil but high in starch. The protein is heavily made up of non-protein nitrogen (up to 35%). The analysis will also vary depending on the extent of processing. Ideal for ruminants as the starch is slowly degraded and has good energy levels.
Colour/Texture
Muddy white meal/pellet or chips.
Palatability
Can vary depending on cyanide content.
Limits on Usage
Linamarin (a glucoside) present releases cyanamide and careful manufacturing is therefore required. Hydrocyanic acid is limited by law and users should consider permitted levels in the feedingstuffs regulations.
Recommended Maximum Inclusion Rates %
Calf 5 Creep 0 Chick 5
Dairy 30 Weaner 10 Broiler 10
Beef 30 Grower 15 Breeder 10
Lamb 5 Finisher 30 Layer 15
Ewe 30 Sow 25    
Handling/Storage
No specific problems.