Tilapia processing waste silage (TPWS): An alternative ingredient for Litopenaeus vannamei (Boone, 1931) diets in biofloc and clear-water systems

Abstract

The aim of this study was to evaluate the growth performance of Litopenaeus vannamei juveniles reared under biofloc and clear-water conditions fed with different inclusion levels of tilapia processing waste silage (TPWS) based-diets. The experiment was performed in two individual systems: biofloc (BS) and clear-water systems (CWS). The trial used forty 40 L rectangular plastic bins (twenty per system) in a density of 63 shrimp/m2. The juveniles were distributed in a factorial completely randomized experimental design. The treatments were based on the percentage of silage inclusion (control or 0, 1.5%, 3.0%, 4.5% and 6.0% of inclusion) in BS or CWS, totalizing ten treatments and four replicates. Survival was above 80% in all treatments and was not affected by both systems and diet. Shrimp final weight and SGR were statistically influenced by system (P < 0.05) but not by the diet; and presented high values in BS. The inclusion of TPWS in L. vannamei diets did not affect shrimp performance. In addition, shrimp raised in BS demonstrated better growth performance as compared to CWS. Keywords: Silage, Nutrition, Waste, BFT, Pacific white shrimp