Supplemental effects of biofloc powder on growth performance, innate immunity, and disease resistance of Pacific white shrimp Litopenaeus vannamei

Abstract

An 8-week feeding trial was conducted to study the effect of dietary supplementation of a biofloc powder on growth performance and non-specific immune response of Litopenaeus vannamei. Seven experimental diets were prepared with supplementation of graded levels of dried biofloc powder by 0, 0.5, 1.0, 2.0, 4.0, 6.0, and 8.0% (designated as Con, BF0.5, BF1, BF2, BF4, BF6, and BF8, respectively). Triplicate groups of shrimp (1.01 ± 0.01 g) were hand-fed with one of the diets four times a day. At the end of the feeding trial, significantly (P ˂ 0.05) higher growth performance and feed utilization were obtained in BF4 groups compared to those fed the Con diet. The innate immunity of shrimp was improved by the dietary supplementation of biofloc. Dietary inclusion of biofloc at the level of 4.0% significantly increased disease resistance of shrimp against Vibrio harveyi. The results indicate that biofloc might be used as a dietary supplement for growth performance, innate immunity and disease resistance of Pacific white shrimp.

JuvenileProcambarus clarkiifarmed using biofloc technology or commercial feed in zero‐water exchange indoor tanks: A comparison of growth performance, enzyme activity and proximate composition

“…However, although the amount of commercial diet used in the biofloc group was 40% lower than that in the control group, the individual weight and length of the juveniles in the biofloc group were much larger than those in the control group, and the weight gain rate was 408%, which was much larger than that in the control group (366%). The superior growth performance of the crayfish in the biofloc group is in accordance with the observations of Lee, Kim, Lim, and Lee () and Shao et al ().…”

Effects of different carbon sources and dietary protein levels in a biofloc system on growth performance, immune response against white spot syndrome virus infection and cathepsin L gene expression ofLitopenaeus vannamei

“…blocking quorum sensing of pathogenic bacteria), water bioremediation as well as it provides extra nutritional supplements and exogenous digestive enzymes (Ekasari et al, ; Emerenciano, Cuzon, Paredes, & Gaxiola, ; Ray & Lotz, ). Furthermore, a biofloc powder is suggested as a sustainable and cost‐effective alternative source for fishmeal in the shrimp feed (Lee, Kim, Lim, & Lee, ; Yun, Shahkar, Katya, Kim, & Bai, ), and also it could act as a source of probiotic bacteria for the culture of shrimp (Ferreira et al, ; Chiu, Guu, Liu, Pan & Cheng, ).…”

Biofloc-Based Enhanced Survival of Litopenaeus vannamei Upon AHPND-Causing Vibrio parahaemolyticus Challenge Is Partially Mediated by Reduced Expression of Its Virulence Genes

“…Additionally, the biofloc maintained at C/N ratio of 15 resulted in significantly lower food conversion ratio (FCR) as compared to the control ( Table 2). These results suggest that biofloc is an effective method to improve culture environment and nutrition of the cultured shrimp and the beneficial effect of biofloc is paralleled with improved water quality and growth performance of shrimp in biofloc system (Ekasari et al, 2014;Luis-villaseñor et al, 2016;Bossier and Ekasari, 2017;Lee et al, 2017).…”

“…or solids from uneaten feeds (Cohen et al, 2005;Wasielesky et al, 2006;Azim and Little, 2008;De Schryver et al, 2008;Ju et al, 2008;Trichet, 2010;Cardona et al, 2015;Lee et al, 2017). Also, for shrimp in a biofloc system, flocs consumed may constitute up to 29% of the daily feed intake (Burford et al, 2003).…”