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Sustainability of polyculture model for small aquaculture farmers in Phu Vang District, Thua Thien Hue Province, Vietnam
Dissertation Abstract:
The study was conducted to assess the sustainability of polyculture aquaculture model in five communes in Phu Vang District, Thua Thien Hue Province, Vietnam. Water quality parameters included in the study were pH, temperature, salinity, DO, BOD, COD, TDS, NH3, NO3, turbidity, phosphates, and heavy metals. Socioeconomic situation of the respondents and natural conditions of the study area in Phu Vang District were described and assessed.
The study showed that the quality of water for aquaculture (i.e., pH, salinity, DO, BOD, TDS) in Phu Vang was within Vietnam’s Water Quality Standards for Aquaculture purposes. COD concentration, however, exceeded the permissible level.
A polyculture model for sustainable aquaculture for small farmers in Thua Thien Hue province, Vietnam was developed from the results of the study. Three species selected for the polyculture model were: Tiger black shrimp (Penaeus monodon), rabbitfish (Siganus guttatus), and kinh (Siganus canaliculatus). Using the model has significantly increased profit margins to more than VND 200 million/ha for small aquaculture farmers and has also contributed to the development of sustainable aquaculture in Phu Vang District.