Prawn food a 'game-changer'

STAFF REPORTERThe West Australian

Australian researchers have developed a food additive for farmed prawns that will give prawn lovers access to more sustainable prawns that still taste great.

After 10 years of research, CSIRO scientists have revealed that farmed prawns fed with Novacq grew on average 30 per cent faster, were healthier and could be produced with no fish products in their diet.

CSIRO's Dr Nigel Preston, who has worked with the $75 million Australian prawn farming industry for more than 25 years, said the research was a world-first achievement in sustainability.

"We fed Novacq to black tiger prawns, and it made them even better for consumers, the environment and prawn farmers," Dr Preston said. "This is a major achievement for the sustainability of Australia's aquaculture industry as prawns fed this diet are not only a top quality product and reach market size faster, they also no longer need to be fed with any products from wild fishery resources.

"This means that Australian prawn aquaculture, already a world leader in sustainability and environmental management, is now set to become even better, and really solidifies aquaculture as a sustainable source of protein to help meet the ever growing demand for food."

Until now, Australian prawn farmers have needed to feed their prawns with a pellet that includes some sustainably sourced fish meal or fish oil, in order to ensure that the prawns grew fast, and were a healthy and high quality product for consumers.

CSIRO and Australian owned and based Ridley AgriProducts have announced that Ridley AgriProducts has taken a licence to produce and distribute Novacq in Australia and several South-East Asian countries. Mr Bob Harvey, General Manager Aquafeed from Ridley AgriProducts said this means the Australian industry will soon have the opportunity to use the Novacq feed additive to boost domestic prawn farm productivity.

"We've seen this product in action and we know how great it is. We've conducted multiple laboratory-based trials, and in conjunction with CSIRO and a great customer of ours, Australian Prawn Farms, we have proven the effects of Novacq when commercially grown, added into a commercial prawn feed and fed to black tiger prawns in multiple full-scale commercial sized ponds," Mr Harvey said.

"Adding Novacq into even the best performing prawn diets on the market, we proved a significant incremental growth rate and food conversion rate improvement."

The effectiveness of Novacq has already been demonstrated on one Australian prawn farm, with Mr Matt West, Operations Manager of Australian Prawn Farms based at Ilbilbie in North Queensland, getting a chance to see the results over a period of four months testing the feed additive on black tiger prawns.

"What I saw on my farm was a clear incremental growth compared to the high quality diets that were used as a control for the large-scale trials we recently conducted at our farm," Mr West said.

Novacq is an entirely natural food source based on the smallest organisms in the marine environment, the marine microbes which are the foundation of the marine food pyramid.

Including Novacq in the diet of farmed prawns has shown for the first time that fish meal and fish oil can be completely replaced in the prawn diet, potentially freeing the prawn aquaculture industry from reliance on wild fishery resources.

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