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Title: Modelling the effect of prebiotics, probiotics and other functional additives on the growth, feed intake and feed conversion of European sea bass (Dicentrarchus labrax) juveniles
Authors: Serradell Pastor, Antonio 
Torrecillas Burriel,Silvia 
Soares, F.
Silva, T.
Montero Vítores, Daniel 
UNESCO Clasification: 310502 Piscicultura
310406 Nutrición
Keywords: European Sea Bass (Dicentrarchus Labrax)
Feed Utilization
Functional Additives
Multiple Lineal-Regression
Specific Growth Rate
Issue Date: 2023
Project: Genomic and nutritional innovations for genetically superior farmed fish to improve efficiency in European aquaculture 
Journal: Aquaculture Reports 
Abstract: Dietary supplementation of aquafeeds with functional additives is a commonly employed strategy in order to reduce the potential negative effects associated to fishmeal (FM) and fish oil (FO) replacement by alternative protein and oil sources. Nevertheless, the wide variety of functional ingredients with different bioactive properties hinders the selection of appropriate dietary supplementation strategies on feed formulation. The present study aimed to develop an observational multiple-linear regression (MLR) model to identify the effects of a variety of functional ingredients supplementation on European sea bass juveniles (Dicentrarchus labrax) growth performance and feed utilization. A literature survey was conducted gathering a total of 61 dietary treatments. The functional ingredients were classified in three main groups, namely, “probiotics”, “prebiotics” or “others” (including plant derived compounds such as essential oils, extracts and powders). Three different MLR were obtained and validated, allowing to describe the effects of functional ingredients supplementation on fish specific growth rate (SGR) (with a final R-squared (R2) = 0.96, adjusted R-squared (adj R2) = 0.92 and a p-value= 7.21E-08)), fish feed intake (FI) (R2 = 0.97, adj R2 = 0.95 and a p-value= 5.42E-12)) and fish feed conversion ratio (FCR) (R2 = 0.90, adj R2 = 0.80 and a p-value= 2.02E-05)). MLR model trimming, allowed the detection of a significant positive correlation (cor) between dietary prebiotics supplementation and SGR (cor= 0.32, p-value= 8.52E-04). On the contrary, prebiotic supplementation presented a negative correlation with fish FI (cor= −0.44, p-value= 6.27E-05) and FCR (cor= −0.41, p-value= 8.96E-05).
ISSN: 2352-5134
DOI: 10.1016/j.aqrep.2023.101729
Source: Aquaculture Reports [ISSN 2352-5134], v. 32, (Octubre 2023)
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