2.3. Growth and survival
At the end of the 56-day feeding trial, shrimp from each
aquarium were bulk-weighed. Growth was measured by the percentage of body weight gain per surviving shrimp in each
aquarium which was calculated as [10 0 (fi nal body wt_- initial body
wt)/initial body wt] and feed effi ciency (FE) which was calculated
as [(fi nal body wt - initial body wt)/feed intake].