Nutrition

Fish Nutrition

  • Mahima Shrimp Development

    • Developed by CMFRI.

  • Critical Nutrients in Fish Feed

    • Important nutrients include Methionine and Lysine.

  • Infusoria

    • Infusoria refers to protozoa, often used in aquaculture as a live feed.

  • Plant Protein Utilization

    • Freshwater prawns can efficiently utilize plant proteins.

  • Vitamins Produced by Fish

    • Fish synthesize 11 water-soluble vitamins essential for their health.

  • Water Stability in Shrimp Feed

    • Shrimp feed should maintain water stability for a minimum of 2 hours.

  • Feeding Recommendations

    • Use 4 feed trays per hectare in shrimp ponds.

  • Conjugated Linolenic Acid (CLA)

    • CLA acts as an antimicrobial agent.

  • Incorporation of Herbs

    • Herbs are added to aqua feeds to boost immunity in aquatic organisms.

  • Prebiotics

    • Prebiotics are non-digestible carbohydrates that support gut health in fish.

  • Phytic Acid

    • Phytic acid is a powerful anti-nutritional factor found in plant ingredients.

  • Coloring in Salmon Flesh

    • Astaxanthin is used to enhance color in salmon flesh by aquaculturists.

  • Carbohydrate Content in Diet

    • More than 40% carbohydrates can lead to retarded growth in fish.

  • Lipid Digestion

    • Fish can digest 80-90% of lipids in their diets.

  • Spirulina Protein Content

    • Spirulina contains 50-60% protein, making it a nutrient-dense feed option.

  • Best Synthetic Antioxidant

    • Ethoxyquin is recommended as the best synthetic antioxidant for aquafeed.

  • Best Live Feed for Giant Prawn

    • Artemia nauplii are considered the optimal live feed for giant prawn.

  • Best Live Food for Shrimp Zoea

    • Artemia is also the best live food for shrimp zoea.

  • Yeast as Probiotic

    • Yeast is recognized for its probiotic properties beneficial for fish health.

  • Feed Efficiency Measurement

    • The efficiency of feed can be assessed by measuring the Feed Conversion Ratio (FCR).

  • Semi-Purified Diet

    • Semi-purified diets are noted as the most refined form of aquaculture diet.

  • Pearson Square Method

    • This method is used to calculate the percentage of Energy and Protein in feed formulations.

  • Gustation

    • Gustation relates to the sense of taste, important in fish feeding behavior.

  • Deoiled Rice Bran

    • This is recognized as the richest source of crude fiber in fish feeds.

  • Calculating Feed Conversion Ratio (FCR)

    • FCR is determined by dividing the air-dried feed fed by the unit weight gain of fish.

  • Silver Carp Feeding

    • Silver carp consume phytoplankton smaller than 0.025 mm in size.

  • Growth Enhancement with Cobalt Chloride

    • Adding 1 mg of cobalt chloride per kg of feed may enhance the growth rate and survival of fish by more than 90%.

  • Protein Requirements of M. rosenbergii

    • The protein requirement for this species ranges from 45-50%.

  • Herbivorous Fish Species

    • Catla and Rohu are classified as herbivorous fish.

  • Caloric Value of Tubificid

    • Tubificid has the highest calorific value among aquatic feeds.