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Relative contribution of natural productivity and compound feed to tissue growth in blue shrimp (Litopenaeus stylirostris) reared in biofloc: Assessment by C and N stable isotope ratios and effect on key digestive enzymes ArchiMer
Cardona, Emilie; Lorgeoux, Benedicte; Geffroy, Claire; Richard, Pierre; Saulnier, Denis; Gueguen, Yannick; Guillou, Gael; Chim, Liet.
The aim of this study was to assess the relative contribution of natural productivity and compound food to the growth of the juvenile blue shrimp Litopenaeus stylirostris reared in a biofloc system. Two experiments were carried out based on the same protocol with three treatments: clear water with experimental diet (CW), biofloc with experimental diet (BF) and biofloc unfed (BU). Shrimp survival was significantly higher in biofloc rearing than in CW rearing. The contribution of the biofloc to shrimp diet was estimated through measurement of carbon and nitrogen stable isotope ratios in shrimp and food sources. Different isotopic compositions between feeds were obtained by feeding natural productivity with a mixture rich in fish meal and the shrimps with a...
Tipo: Text Palavras-chave: Biofloc; Shrimps; Stable isotope; Digestive enzyme activities; Digestive enzyme mRNA level.
Ano: 2015 URL:
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