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Effects of supplementing bioactive compounds to a formulated diet on sensory compounds and growth of shrimp, Litopenaeus vannamei (Boone, 1931)
Author(s) -
Ju Zhi Yong,
Forster Ian P,
Dominy Warren G
Publication year - 2010
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/j.1365-2109.2009.02433.x
Subject(s) - litopenaeus , shrimp , biology , food science , carotenoid , zoology , fishery
Experimental diets were processed at the Oceanic Institute by adding various bioactive compounds (lutein, fucoxanthin, astaxanthins (Ax), glucosamine, carotenoid mix, phytosterol mix, bromophenol (Bp) mix or their combination) to a formulated (control) diet to examine their effects on sensory composition and growth of shrimp. These diets and a commercial feed were fed to ∼1.6 g shrimp ( Litopenaeus vannamei ) in four replicates in an indoor laboratory under flow‐through conditions for 8 weeks. Results indicated that all the supplementations of the bioactive compounds did not improve shrimp growth (0.79–0.97 g week −1 ) compared with that (0.94 g week −1 ) of the control diet ( P >0.05). However, inclusion of lutein (200 mg kg −1 ) or carotenoid mix (827 mg kg −1 ) in the control diet (with supplemental Ax) resulted in much higher free Ax (48.3 or 46.5 mg kg −1 ) and esterified Ax (6.2 or 3.9 mg kg −1 ) content in shrimp tails than the control diet (28.4; 1.4 mg kg −1 respectively) ( P <0.05). Inclusion of Bp (2 mg kg −1 ) in the control diet resulted in higher levels of Bp (160 μg kg −1 ) in shrimp tail muscle than the control diet (81 μg kg −1 ) ( P <0.05). Three free amino acids, glycine, proline and alanine might be mainly responsible for the sweet taste of L. vannamei . The results suggest that the supplementation of the bioactive compounds may not affect shrimp growth performance, but some may affect the composition and taste of shrimp.