use of seaweed ulva lactuca for water bioremediation and as feed additive for white shrimp litopenaeus vannamei

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ID: 236426
2018
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Abstract
Two experimental feeding trials were conducted during four weeks to evaluate the use of Ulva lactuca in shrimp culture: (1) for wastewater bioremediation, and (2) using different inclusion levels of U. lactuca meal in shrimp feed. In feeding trial 1, shrimp reared under seaweed U. lactuca water exchange in a re-circulation system (SWE) resulted in similar growth and feed utilization as shrimp reared with clean water exchange (CWE). Shrimp under no water exchange (NWE) resulted in significant lower growth and higher feed conversion rate (FCR) compared to the other treatments (p < 0.05). Nitrogen compounds and phosphate in water from SWE and CWE treatments did not present significant differences during the experimental trial (p > 0.05). In feeding trial 2, U. lactuca biomass produced by wastewater bioremediation in SWE treatment were dried and ground to formulate diets containing 0, 1, 2, and 3% U. lactuca meal (0UL, 1UL, 2UL, and 3UL). Shrimp fed the 3 UL diet resulted in a significant (p < 0.05) improvement of growth and FCR, and enhanced whole shrimp lipid and carotenoid content by 30 and 60%, respectively, compared to control diet. Seaweed U. lactuca is suggested as a desirable species for wastewater bioremediation in integrated aquaculture systems, and its meal as a good feed additive for farmed shrimp.
Reference Key
elizondo-gonzlez2018peerjuse Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Regina Elizondo-González;Eduardo Quiroz-Guzmán;Cristina Escobedo-Fregoso;Paola Magallón-Servín;Alberto Peña-Rodríguez
Journal pediatrics
Year 2018
DOI
10.7717/peerj.4459
URL
https://peerj.com/articles/4459/
Keywords
seaweed shrimp feed additive

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