9420.pdf

Solid wastes generated by seafood processing plants, with the exception of that
generated by fish meal plants, represent 30 % to 85 % of landed fish weight, depending
upon the operation (Green and Mattick, 1977). Shrimp processing generates from 40 to
80 % waste, filleting plants generate 30 to 60 % waste, and crab processing generates
from 75 to 85 % waste (Green and Mattick, 1977). The goal of byproduct recovery is to
attain maximum utilization of seafood processing wastes for food or feed thus reducing
the amount of waste and decreasing the need and cost of waste treatment.
There is a variety of uses for seafood processing wastes. However, not all uses are
optimal for a particular waste disposal situation. The feasibility of waste utilization and
byproduct recovery are situation specific and are affected by a number of factors
including:
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type and composition of waste;
volume generated;
waste availability (seasonality);
location of waste sources;
location of processing facilities;
location of end users;
costs;
climatic conditions;
existing end users of waste products;
markets for waste products;
local regulations.
Some approaches to byproduct utilization are described in order of importance in the
following sections.
5.4.2 Fish Meal
Approximately 28.6 % of the world annual fish catch is used to produce fish meal (del
Vane and Aguilera, 1990). Canada is a very minor player in the world production of fish
meals, producing approximately 1 % of worldwide production (Can. Fishery Consultants
Ltd, 1991 ).’ Fish meal is an internationally recognized commercial commodity utilized in
feeding farm animals such as chickens, turkeys and pigs
disadvantages of fish meal production are the high capital
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and farmed fish. Some
costs of the equipment,