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An example of assay for vitamin deficiency
calculation is now given from George Post's book. "Rainbow trout in a
raceway have developed macrocytic anemia, fragile caudal fins, are darker in
color are reduced in growth and lethargic. Folic acid deficienvcy is
suspected, "There are 1.000 fish in the raceway. The average age size as determined by weighing a representative sample and counting the nimber, is 540 fish per kg and water temperature is 16 C. The feeding level is 5.3 % of the total fish weight per day. Folic acid was 2.2 mg per kg of ration.
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