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Aquaculture Environment Interactions

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AEI 9:257-268 (2017)  -  DOI:

Antioxidant response and body composition of whiteleg shrimp co-cultured with Nile tilapia in recirculating aquaculture

Zaki Z. Sharawy1,*, Rajko Thiele2, Eman M. Abbas1, Mohammed A. El-Magd3, Mohammed S. Hassaan1, Corina Peter2, Jan Schmidt2, Reinhard Saborowski2, Ashraf M. A. S. Goda1, Matthew J. Slater2

1Aquaculture Division, National Institute of Oceanography and Fisheries (NIOF), Suez, Egypt
2Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Am Handelshafen 12, 27570 Bremerhaven, Germany
3Department of Anatomy, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh, Egypt
*Corresponding author:

ABSTRACT: Co-culture of the high-value tropical species whiteleg shrimp Litopenaeus vannamei and Nile tilapia Oreochromis niloticus may have significant commercial and environmental benefits. However, feeding regimes and holding conditions must meet the animals’ nutritional requirements and minimize stress reactions. In the current study, whiteleg shrimp and a commercially important red strain of Nile tilapia were maintained in monoculture and in co-culture under controlled conditions in a recirculating aquaculture system. Shrimp in monoculture received a commercial food. Shrimp in co-culture either fed only on tilapia waste or on tilapia waste with a low supplement of commercial diet (treatment ‘FSD’). To assess the metabolic stress level of shrimp, we measured the relative expression of the antioxidant-related genes cMnSOD and GPX in the abdominal muscles and the activities of digestive proteinases and alkaline phosphatase in the midgut gland. Shrimp in co-culture showed significantly reduced expression of both antioxidants, indicating lower stress levels than monocultured shrimp fed a commercial diet. Digestive enzyme activities, along with hepatosomatic indices and enzyme expression patterns indicate unimpaired food utilization and excellent nutritional status in shrimp across all treatments. Final body weight was significantly higher in shrimp in both co-culture treatments, with highest growth rates in FSD shrimp. Growth rates indicate that tilapia biowaste/faeces can be used as a sole diet for high-value shrimp, irrespective of the feeding regime. Beyond known benefits such as higher yield and efficient resource use, our results show that co-culture of the 2 species is successful in terms of nutritional provision and shrimp health status.

KEY WORDS: Litopenaeus vannamei · Oreochromis niloticus · Red male tilapia · Antioxidant-related genes · Integrated multi-trophic aquaculture · Digestive enzyme · Biowaste diet

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Cite this article as: Sharawy ZZ, Thiele R, Abbas EM, El-Magd MA and others (2017) Antioxidant response and body composition of whiteleg shrimp co-cultured with Nile tilapia in recirculating aquaculture. Aquacult Environ Interact 9:257-268.

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