Integrated Fish Production
 
 
Problem adressed

Fish farming is an agricultural activity that can deeply improve already existing farming systems. For example, it can increase the water availability to other cultures or it can increase the farm income when livestock is associated or when cultures are conducted in the pond itself (rice when full, other cultures when drained). On the other side, fish farming can also benefit from agricultural by-products generated by other activities, as they can be used to increase the quantity of plankton, that is the natural food of fish. But in return, the management of such an integrated fish farm is complex and implies to respect some standards.

Objectives

The objective is to obtain a high fish production with numerous positive impacts on the other activities, using as much as possible resources available on the farm. For the fish production, the technical results are a quick growth and a high yield. The economical results are the income and the profit, which are not always lineary linked to the technical results.

Techniques

Several factors will influence the success or failure of an integrated fish farming activity :

Costs

The main cost is the construction of the pond, although many small farmers, with low financial resources but high working capacity during seasons where work on other cultures is reduced, can construct it themselves.

The most important cost during the production is the artificial food, but it isnít so frequently used on integrated fish farms, as fertilization alone is very efficient and is more widely employed. Manure is cheap and efficient but the quantities needed to obtain a good production are so important that they make its use uneconomical if they are not available in the proximity of the farm and need to be transported. Mineral fertilizers are more expensive but sometimes, their use is economically more profitable.

Targeted Livestock Systems

Farming system with aquatic ecosystem management

Grazing System
LGA LGS1 LGS2 LGS3 LGH1 LGH2 LGH3 LGT1 LGT2 LGT3
N N N N N N N N N N

Mixed System
MCG MCR MCC MFF MEF
Y Y Y Y Y

Industrial System
IFP IPL IPG IRM IDU ISL ITN IMP
N Y Y Y Y N N N

Impact

Monitoring: EIA, indicators
  • Water turbidituy and colour: Secchi disk (black and white disk used to determine the turbidity by measuring the deepness at which the disk disappears when introduced in water).
  • Fish behaviour.
  • Intermediary growth and yield determination using sampling.
  • References

    Billard R., 1995. Les carpes: biologie et élevage. INRA,. Paris, France : pp. 387.

    Hepher B., Pruginin Y., 1990. Commercial fish farming. John Wiley & sons, New York, USA. pp. 261.

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