Potential use of Artemia biomass by-products from Artemia cyst production for the nursing of goby Pseudapocryptes elongatus in Vietnam: effects on growth and feed utilization

Abstract

The present study was performed to evaluate the effect of using Artemia biomass, by‐product from Artemia cyst production on growth and feed utilization of goby Pseudapocryptes elongatus fingerlings. A control diet containing fishmeal as main protein source was compared with four experimental diets in which fishmeal protein was replaced by increasing dietary levels of Artemia protein, namely 25%, 50%, 75% and 100%. The five test diets were compared with a commercial diet and dried Artemia. All diets were formulated to be equivalent in crude protein (360–370 g kg−1) and lipid (58–65 g kg−1). The experiment was conducted in 80 L plastic tanks filled with water at a salinity of 15 g L−1. Goby fingerlings with 0.21 g initial weight were fed the test diets for 30 days. The results showed that weight gain and specific growth rate of goby were positively correlated with total feed intake. Moreover, growth performances and feed utilization in the fry receiving the commercial feed and fishmeal control diet were similar, both were inferior to the groups fed dried Artemia and the based formulated diets. These results illustrate that both dried Artemia and Artemia‐based feeds can be used for feeding goby fingerlings, indicating the high potential of using locally produced Artemia biomass, which could contribute to reduce the reliance on fishmeal and improve profits for Artemia producers.

Optimal Dietary Protein and Lipid Levels for Juvenile Yellowstripe Goby (Mugilogobius Chulae), a Proposed Laboratory Fish

“…The marble goby Oxyeleotris marmorata (Bleeker) has a limited ability to utilize dietary lipid [14], and only a moderate amount of ammonia is produced after feeding [15]. Both dried Artemia and Artemia-based feeds can be used to feed goby fingerlings of the species Pseudapocryptes elongatus [16]. However, these results has little value for M. chulae because dietary nutritional requirements may vary with species, body size, and aquaculture environment.…”