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Waterways Restoration, which will use the fi sh as weed control, and the farm is currently working on future contracts that include exporting grass and silver carp to Australia and China for food. "We have been working on this for one and a half years ... I see a long future here. Grass Carp are a terrifi c fi sh and fi t the Asian diet perfectly," Mr Hutton said. also great for the students to be involved with such an iconic New Zealand species." NELSON'S AQUACULTURE PARK The latest addition to NMIT's operations at Cawthron Institutes' Aquaculture Park at The Glen, north of Nelson, follows expansions last year which included a marine hatchery for fi sh and shellfi sh, a set of marine on-growing tank systems and a teaching laboratory. NMIT also has a set of tanks at its campus in Nelson where students rear Chinook salmon, and has established fi sh rearing projects at primary and secondary schools in Nelson and Golden Bay to provide pathways into aquaculture. NMIT offers the country's only Diploma in Aquaculture which was launched last year to meet the needs of the country's burgeoning aquaculture sector, 70 percent of which is based in the Nelson, Tasman and Marlborough region. More than 2500 people are employed in the sector across the Top of the South. POULTRY OIL FISH FEED The Environmental Protection Authority board of inquiry deciding whether King Salmon can build nine new fi sh farms in the Marlborough Sounds has heard evidence on current practices in salmon feed from Skretting Australia New Zealand account manager Ben Wybourne. Skretting, who make the feed pellets used SEAHORSES TO SUPPORT AQUACULTURE TRAINING Nelson Marlborough Institute of Technology's aquaculture facilities at Cawthron Institute's Aquaculture Park will soon have around 15 new tenants when a group of seahorses arrive from Golden Bay in October. "Rearing these seahorses will be a great way for our aquaculture students to gain additional experience in hatching and rearing marine fi sh," NMIT Aquaculture Programme Area Leader Dr Mark Burdass says. "The rearing process for most marine fi sh is very similar; whether it's a seahorse or a kingfi sh, there are only minor differences and the fundamental process is still the same. Our students will be able to apply what they learn from working with these seahorses, to any other marine fi sh rearing process." The seahorses have been sourced from a marine farm in Golden Bay where they are often found feeding amongst the mussels living on ropes around the farm. They will be housed in eight marine glass tanks, with two in each tank. "The marine fi sh we could be rearing are often really huge, like groper or kingfi sh, and we don't have facilities to do that so these native seahorses or fat-bellied seahorses are the next best thing," Dr Burdass says. "It's NOVEMBER/DECEMBER 2012 ■ NZ AQUACULTURE ■ 5 at New Zealand King Salmon farms, are replacing fi sh oil and meal with poultry and freezing industry waste. More than 80 percent of the diet of New Zealand salmon was land-based and the blood, meat and feather meal used in its feeds were by-products of the Australian poultry, cattle, sheep and pig slaughter industries. Oil from poultry is increasingly taking the place of fi sh oil, as experience from the collapse of anchovy fi sheries has led to the search for alternative sources. The absence of salmon diseases in New Zealand farmed salmon means antibiotics are not used in feeds for this market and there is no need for lice treatments or drenches to treat internal parasites. Skretting did add antibiotics and vaccines to feed used in other countries. The dried, cooked feeds are as unlikely to carry disease as cooked dry biscuits. Mr Wybourne said, the chinook salmon farmed in New Zealand by King Salmon need 1.9kg of feed to produce a kilogram of fi sh, King Salmon diets are 10 percent fi shmeal compared with 70 percent in 1990. Processed salmon fi llets retain 3.5 tonnes of anchovy produce enough oil and meal to grow one tonne of king salmon. The fi sh are fed astaxanthin, a pigment, to give their fl esh its pink colour. about 42 percent of the essential fatty acids fed to the fi sh. LOCH DUART'S NICK JOY TO PRESENT AT CONFERENCE Nick Joy, Co-founder of the Scottish salmon producer Loch Duart, will be making a presentation at the 2012 New Zealand Aquaculture Conference in Nelson on November 1-2. Based in Sutherland in the very North West of Scotland, Loch Duart is noted for its ethical and sustainable approach to salmon farming which has earned the company an outstanding reputation in the industry and top-end customers in Europe, America and beyond. Under Mr Joy's stewardship, the company has successfully implemented ground breaking initiatives in fi sh welfare, full-year fallowing, water quality and bespoke fi shmeal CONTINUED ON PAGE 14 STUDENT-REARED SALMON GOES TO GOOD CAUSE Community fi shing ponds will soon be opened in Appleby. The fi shing ponds have been built by the Sports Fishing for Youth Charitable Trust with support from local contracting companies, to teach children and young people how to fi sh and to encourage more people into the outdoors. The ponds will be home to Chinook salmon and Rainbow trout and are expected to open to the public in December 2012. First and second year Diploma in Aquaculture students already grow Chinook salmon in tanks at NMIT's Nelson campus as part of their studies. "At the end of the period of growth those fi sh would normally be euthanized, so donating these fi sh to a community project that's aimed at getting children and families into the outdoors and fi shing, is a really good use of a resource that would otherwise go to waste," says NMIT Aquaculture Programme Coordinator Dr Mark Burdass. Fish and Game Nelson Marlborough regional manager Neil Deans says "These ponds provide an opportunity for young people to have a go at fi shing, in a safe environment, with good tuition and guidance, close to the city where there's a reasonable chance of them catching fi sh." The NMIT students will also be helping maintain water quality in the ponds, monitor the health of the fi sh and manage the aquatic landscape.