Fish as feed inputs for aquaculture Pdf

Fish as feed inputs for aquaculture PDF This technical paper provides a comprehensive review of the use of wild fish as feed inputs for aquaculture covering existing practices and their sustainability as well as implications of various feed-fish fisheries scenarios.

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Fish as feed inputs for aquaculture Pdf Download

SUMMARY

With around three-quarters of the world’s capture fisheries fully or overexploited, aquaculture is seen as the main source for the future growth of fish production.

Given this finite state of affairs, this paper examines the role of “feed” fisheries in fish and animal farming and considers whether the direct human consumption of these resources might be preferable on environmental, food security and livelihood grounds.

This synthesis draws on four regional analyses and a number of country case studies. There are marked differences among regions regarding the sourcing and use of fish-based protein for feeds.

In South America and Europe, high-performance compounded feeds derived from target feedstocks are utilized, although Asian demand for these resources is increasingly causing South American and European aquaculture producers to substitute fishmeal with plant-based alternatives.

Asian aquaculture – apart from the intensive culture of marine shrimp – still largely depends upon “trash fish” and farm-made diets due to their availability and low cost, characteristics which are considered by farmers to outweigh their poor growth and environmental performance.

With the exception of Egyptian mariculture, most of Africa’s culture of herbivorous/omnivorous species uses locally made fishmeal. In some key feed fisheries and particularly in South America, there is considerable scope to increase the proportion of feedfish used for human consumption to address food security concerns.

However, this switch depends upon the development of low-cost, easily conserved products that are accessible by the poor in inland rural areas. In Asia, there is some scope for greater use of low-value fish for human consumption, but again affordability and required product preservation are limitations.

In terms of food security and livelihood maintenance, such a switch would be particularly beneficial to South American populations. However, the situation in Asia is less clear cut, as cheap and abundant trash fish allow small-scale aquaculture development and the accompanying livelihood opportunities.

In summary, there is no single “answer” as to whether more “feedfish” should be used for human consumption. Solutions to this issue require a regional approach that examines all the consequences – economic, social and environmental – to ensure that inappropriate policy changes are not rushed through on the basis of simplistic assertions.

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