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Fish feed and nutrition
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The slow growth of the European sea bream and sea bass markets, together with progressive decreases in price and profit margins is leading to diversification of marine aquacultured species in the Mediterranean region. Red porgy (Pagrus pagrus), a close species to the widely cultured red sea bream (Pagrus major), is a fish highly appreciated for its nice appearance, firm flesh and delicate flavour, and brings prices over 20 €/kg in some European markets. Its range of distribution extends to...
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While the absolute nutritional requirements of prawns appear to be similar to those of penaeid shrimps, the diets used in their commercial pond production differ significantly. This is due primarily to the lower biomass densities at which prawns are cultured, which allows a greater contribution of natural foods in their production. A series of studies at Kentucky State University evaluated the roles of natural foods, preferences for different taxa of natural foods, and the development of the...
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One of the great challenges of the next decade will be to provide sufficient high quality proteins for the rapidly growing aquaculture industry. A wide range of species to be farmed will necessitate sourcing feed proteins that are able to meet the specific requirements of the target species. Fish meals have traditionally provided a large proportion of the protein required by aquaculture species, and even if there is no immediate shortage of supply, there are requirements for alternatives for...
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Although aquaculture’s contribution toward total world fisheries landings has increased six-fold over the past three decades, increasing from 5.3% to 34.1% from 1970 to 2001 (Figure 1), the finfish and crustacean aquaculture sector is still highly dependent upon marine capture fisheries for sourcing key dietary nutrient inputs such as fish meal and fish oil. In fact when viewed in wet fish weight equivalents, although only about 17.7 million metric tons (mmt) or 37% of total global...
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The aquafeed industry in relation to salmonid fish culture is particularly reliant on the use of high quality ingredients such as fish meal and fish oil that constitute the major components of the nutrient-dense feed. However the addition of pigmenting carotenoids is an essential process in order to ensure that the characteristic pink/red flesh colouration is maintained during the production of farm-raised trout and salmon in many countries. A pink to red colour in the flesh of...
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Introduction The United Nations (UN) estimates that by 2037 the world’s population will have exceeded 10 billion. This rapid growth in humankind will bring with it severe difficulties, not only in terms of providing shelter, education, and health care, but also in maintaining current levels of protein nutrition. The Food and Agricultural Organization (FAO) of the UN acknowledge that global fishery output must be increased by at least 50% to offset projected shortfalls in...
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