Catfish (Pangasius Hypothalamus) Farming Systems, Vietnam

Catfish (Pangasius Hypothalamus) Farming Systems, Vietnam,  grudzień 2009 r. : This study was conducted in My Hoa Hung village in             Long Xuyen city, An Giang province, Mekong River in Vietnam             during August to December 2007, to assess environmental             impacts from feeds used in aquaculture systems such as             intensive fish cages, pens and ponds culture on and in the             vicinity of Mekong River, Vietnam (e.g. Pangasius             Hypopthalamus, Colossoma macropomum species). Moreover, the             purpose of this study is to investigate the effects of feeds             in the intensive aquaculture systems towards water             environment. The study was commenced by a field survey of 20             Pangasius cage farmers, 18 Pangasius pond farmers, 20             Pangasius pen farmers and 15 Colossoma cage farmers.The             survey showed that the fish density is quite high of 80-105             fish/m2 as compared with the optimum range of 30-60 fish/m2.             There are three kinds of popular feeds such as homemade,             pellet and Pangasius waste used in this area. The pellet feed             is more effective in terms of economic profit, less             environmental pollution, better product quality and reduction             in trash fishes from nature.Water quality of the river is             still in the limit for fish culture in three surveyed             months.