Nutrient Content of Various Water-Based Alternative Protein Sources as Candidates for Raw Material Feed in Aquaculture
S Saputra1, S Antoro1, SB Dhoe1, MAL Rajamuddin2, M Setiawati3, MA Suprayudi3

1Research Center for Fishery, National Research and Innovation Agency, Indonesia
2Pangkep State Polytechnic of Agriculture, Indonesia
3Aquaculture Department. Fisheries and Marine Science, Bogor Agricultural University, Indonesia

Abstract

In aquaculture, fish meal is the primary feed ingredient. The high growth of the aquaculture industry causes the need for fish meal to increase, so that the price of fish meal increases which in turn the operational costs of aquaculture also increasing. The purpose of this research is to evaluate water-based alternative protein sources as candidates for raw materials feed in aquaculture. Microalga (Tetraselmis chuii, Spirulina platensis, and Chaetoceros calcitrans), biofloc, and klekap were evaluated using proximate analysis, amino acid analysis and fatty acid analysis. The proximate analysis revealed that the microalga T. chuii meal (TcM), S. platensis meal (SpM), and biofloc meal (BFM) had a nutrient protein content greater than 20%, with an amino acid content comparable to fish meal and soybean meal. BFM and C. calcitrans meal (CcM) contain essential fatty acids required by both freshwater (linoleic fatty acid) and marine fish (EPA and DHA). Meanwhile, TcM, which was the only raw material, contained linolenic acid but no DHA, whereas SpM and klekap meal (KM) contained only linoleic fatty acid.

Keywords: nutrient, protein, biofloc, klekap, microalgae

Topic: Sustainable Aquaculture and Fisheries