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ICAR JRF Fish Nutrition And Feed Technology 29 Jun 2024Shift 1
MCQ (Single Correct) +4 −1
Nutritional requirement of shellfish is effected by
  • Nutritional Modulation in Shellfish (Shrimps, Crabs, Molluscs):
  • Abiotic Factors: Temperature, dissolved oxygen, salinity, and photoperiod directly influence metabolic rate, feed intake, and nutrient assimilation.
  • Life Stage & Age: Larval stages (zoea, mysis, postlarvae) demand significantly higher dietary protein ($40-50\%$) and phospholipids than juveniles and adults.
  • Water Quality & Health Status: Sub-optimal ambient parameters or pathogen exposure increase maintenance requirements and demand elevated levels of protective nutrients (vitamin C, immunostimulants).
  • nalysis:
  • All listed abiotic, biotic, ontogenetic, and physiological factors collectively govern nutritional demands. Hence, Option 4 (All statements are true) is correct.
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