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Due to high demands of fish meal as the source of protein, it results in high price which cause the amount of protein supplied in the diet need to be limited.  Vegetable protein sources cannot replace the fish meal because the vegetable proteins is limited in some aquatic species. Low price,  feed palatability and consistent nutrient composition for protein sources also is the main reason why the alternative protein sources is needed. however, the replacement of protein source can only be done with certain percentage because total replacement will cause growth loss. further studies and investigation still need to be done because there are a lot of side affect to the shrimp.  The success of such investigations will result in a sustainable shrimp culture industry which able to meet the demand of protein for the growing world population

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Case Studies of Fish Meal Replacement in the Diets for Fed-Aquaculture Species (Katheline  et. al., 2019)

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Combine multiple protein sources to take benefit from their complementary nutritional which allow the flexibility in feed formulations when ingredient prices flop.
Use of feed supplements can to balance the nutrient composition of the feeds

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1) An adequate nutrition and organoleptically-pleasing diet is essential to achieve satisfactory intake and growth in shrimps.
2) to avoid food waste and food loss

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Fishmeal, Peru Fish meal/pellets 65% protein, US Dollarsper Metric Ton (World Bank Commodity Price Data,2012)

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1) Processed Animal Proteins (PAPs) are use as source of proteins.Meat and Bone meal (MBM, with 40% protein) and Poultry By-product meal (PBM, with 63% protein) that replace the fish meal, growth improvement at 20% replacement was observed. PBM could replace fish meal up to 80% without growth loss which can reduce  the fish meal use (Nguyen et al., 2003).