Artemia in Freshwater Prawn diets
Partially or Totally Replacing Fish Meal with Frozen Artemia as a Dietary Protein Source for Early Stage Giant Freshwater Prawn, Macrobrachium rosenbergii Post Larvae Reared under Controlled Conditions
Published: December 28, 2011
Summary
Abstract A 105-day feeding study was conducted to evaluate the effect of partial (0%, 20%, 40%, 60% and 80%) and complete (100%) substitution of dietary fish meal (FM) with frozen Artemia on growth performance and feed utilization of Giant freshwater prawn ( Macrobrachium rosenbergii ) post larvae (PL) reared in fiberglass tanks under controlled conditions. A total of 1080 M.rosenb...
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Taylor Made Fish Farms
4 de enero de 2012
Questions please :-
1. While I can see that there is a vitamin and mineral premix added, what are the sources of omega 3 (and 6) fatty acids, and would you add them to the premix in the form of purified Omega 3 (6), or soak the freshly hatched artemia in a suitable mix, or would you just add suitable algae rich in omega 3 fatty acids into your mix??
2. Does the hardening case / shell (chitin?/Keratin?) become indigestible, and just occupy space in the digestive tract? What can you do about managing its digestibility?
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4 de enero de 2012
Dear Jeff.
1. Vitamin and mineral mixture was added in ready to use commercial form at 2%.
2. 85% of the micro-organisms in shrimp gut produce chitinase. These bugs multiply within the gut also to provide an extra source of nutrition; most importantly they give the ability to the prawns to digest chitin…a protein/carbohydrate complex (FAO, 1980).
Ref.
FAO (1980). THE DIET OF PRAWNS. By Michael B. New Senior Fisheries Biologist (Aquaculture) Programme for the Expansion of Freshwater Prawn Farming in Thailand (FAO/UNDP/THA/75/008) Bangpakong, Chacheongsao Thailand (1980).
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