- An aquaculture park in the Philippines is reportedly benefitting local cage culture. The newly established aquaculture park along the Magat reservoir in Gen. Aguinaldo village in Isabela’s Ramon town is seen to revive the one-flourishing fish cage industry in the area. Jovita Ayson, regional director of the Bureau of Fisheries and Aquatic Resources in Cagayan Valley, told the Business Mirror that the park has industrial estates wherein aquaculture plots are leased or awarded to investors, with the government providing infrastructure , utilities and technical services. Read more...
- This article examines the role of feed in sustainable aquaculture. It looks in detail at the past decade of research undertaken at the Aquaculture Protein Centre in Norway. Read more...
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Could waste from Norwegian salmon production find a use in IMTA? Researchers at the 'Integrated open seawater aquaculture, technology for
sustainable culture of high productive areas (INTEGRATE)' project think so. At present, respiratory
products, faeces and uneaten feed worth NOK 6 billion are discharged into
Norwegian coastal waters. The researchers have studied whether this waste can be put to use as nutrients for cultivating kelp and/or mussels. Read more...
Provinces and regions of the Philippines (Photo credit: Wikipedia)
The Aquaculture Protein
Centre (APC) was among the initial 13 Norwegian Centres of Excellence
(SFF) established. After ten years, its activities as an SFF centre are
now drawing to a close.
The centre was established to generate the knowledge needed to be able
to replace fishmeal in aquaculture feeds. After ten years, the
proportion of fish-based ingredients has been reduced to roughly ten per
cent, while fish farmers have doubled their production.
Fish going vegetarian
APC Director Margareth Øverland believes that climate change and the
increasing global need for food have given new urgency to the need to
find feed ingredients that cannot be used directly as human food. The
APC has shown that fish production is possible without the use of
fishmeal.
"In trials with rainbow trout, we've recently achieved normal growth
rates with feed that contains no fishmeal," says Dr Øverland. "The fish
showed no signs of disease either." Nevertheless she believes that fish
feed of the future will still contain some marine ingredients, both to
make the feed taste better to the fish and to ensure that the fish
contain healthy omega fatty acids.
"Salmon, our main production species, is not adapted to a vegetarian
diet by nature. So it is critical that we find out how vegetable
proteins affect fish growth, digestion and the immune system. One
challenge is that plants contain anti-nutrients, which are substances
that protect the plants from pests and disease, but which also inhibit
fish growth and can trigger gut inflammation."
Important discoveries
Read more at: http://phys.org/news/2012-11-fish-sustainable-aquaculture.html#jCp
Read more at: http://phys.org/news/2012-11-fish-sustainable-aquaculture.html#jCp
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