Question
The feeding intensity of fish determined by calculating
gastro-somatic index is equal toSolution
The gastro-somatic index (GaSI) is a crucial biological measurement used in fisheries science to assess:Ā 1. Formula: 2. GaSI = Weight of stomach content / Total weight of fish Ć100Ā 3. Purpose:Ā a. Quantifies feeding activity and nutritional statusĀ b. Helps determine optimal feeding schedules in aquacultureĀ c. Indicates ecosystem health in wild fish populations 4. Interpretation:Ā a. Higher GaSI = Active feeding phaseĀ b. Lower GaSI = Fasting or starvation periods Scientific Basis: This index is standardized in fisheries research and recognized by:Ā ā¢ FAO fisheries technical papersĀ ā¢ ICAR (Indian Council of Agricultural Research) guidelinesĀ ā¢ Journal of Fish Biology standards Practical Application: Aquaculture farms use GaSI to:Ā ā¢ Adjust feed quantitiesĀ ā¢ Identify disease outbreaks (abnormally low GaSI)Ā ā¢ Monitor breeding cycles (pre-spawning fasting) Regulatory Reference: The method aligns with MPEDA (Marine Products Export Development Authority) quality protocols for farmed shrimp and fish exports.Ā Note: For accurate results, measurements should be taken from live or freshly caught specimens before stomach contents degrade.
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