jueves, 26 de mayo de 2011

Aquaculture: The art of raising fish


Dr. Marcos Venicius Monteiro Queiroz
Manager of the consulting firm ACQUAMASTER BOLIVIA
Dale someone a fish and he will eat a day. Teach him to raise fish and to fish and he will eat his entire life.         
-Chinese saying referred to often aquaculture, the farming of aquatic organisms in artificial conditions, is one of the branches of the fastest-growing agricultural sector, as it reaches a rate of annual increase of 10 per cent world average. On the other hand, the global total of fishing has reached a peak of about 90 million tons per year, has not changed over the past decade. The increase of the world's population, associated with the growing demand for fish, which is seen as a more healthy food, they have caused a rapid expansion of aquaculture. The breeding of fish in nurseries has been practicing since thousands of years in the far East, but always in a position to extend. In patterns of farming are regularly obtained yields of more than 6 tonnes per hectare of nurseries and with the help of special devices of oxygenation of the water, it can be to 3 times more. To achieve such exceptional yields must conform strictly to the conditions requiring the farming of fish. These include, among others, the following: nursery or tanks equipped with filters for the effective elimination of organic waste and devices to increase the supply of oxygen to fish; availability of selected, healthy FRY, to repopulate periodically nurseries; supply, sufficient food of types appropriate to the various stages of growth; and ability to control the quality of the water and the State of health of the fish throughout the cycle of production, personal training in the art of farming. The advantages of intensive fish farming are many, but to take advantage of them, the producer must be able to support in an infrastructure that not always exists in the country or place in which intends to develop this activity.

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