Innovations in sustainable fish and shrimp feed

Skretting Aquaculture Research Centre (ARC) is the global research organisation for Skretting, ensuring that the world's leading fish and shrimp feed producer maintains its position at the forefront of the rapidly developing aquaculture industry.

Skretting ARC's ultimate goal is to see the research implemented into innovative and sustainable solutions for the aquaculture industry, whether in the form of products, methodologies or manufacturing improvements.

Research based products & concepts in aqua feed

Prime & Express

Prime & Express are the next generation of feeds for post-transfer salmon. Skretting’s new grower salmon feeds enable a shorter production time in the sea, without compromising final product quantity or quality.

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MicroBalance FLX

MicroBalance FLX is a ground-breaking concept that can be applied to all Skretting feed products. It is a formula that allows us to regulate the amount of fishmeal, or other ingredients, without compromising on the nutritional value of the feed.

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Premium

Premium was made based on a breakthrough discovery at the Skretting Aquaculture Research Centre (ARC): our scientists have discovered micro-ingredients that increase the fish's utilisation of digestible energy. The metabolic activators are natural substances present in specific raw materials. When combined correctly, these substances positively impact the fish's physiology. More fat, and therefore more omega-3, is being stored in the edible parts of the fish rather than being lost in the gutted parts of the fish during processing.

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HT

It is widely understood that each fish species has an optimum temperature range and will lose appetite and grow more slowly when water temperatures go much above that range. Until recently the physical effects on the fish leading to these symptoms were not understood.

A collaborative research project identified that during high temperature the fish's gut wall is more permeable, making them more vulnerable to invasion by pathogens. In addition, there is a faster metabolism of anti-oxidants and the disruption of gut microbiota leads to loss of appetite.

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Protec

Most aquaculture systems are open to the natural environment, making it difficult to protect fish from parasites, bacteria, viruses and environmental fluctuations. However, by using a functional diet like ProtecTM, that strengthen the immune system of fish, farmers can help their stocks cope with disease, environmental shocks and recover faster. As this ultimately improves farm production volumes and ensures an efficient use of feed resources, Protec diets are becoming ever more integral to farmers’ fish health strategies.

ProtecTM is Skretting's prime functional feed for farmed fish. Protec helps to shield skin, gut and gills; it supports the immune system, provides building blocks for new cells and optimises the balance between fish, microbes and environment.

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MicroBalance

MicroBalance® technology is derived from research over several years at Skretting Aquaculture Research Centre (ARC), which has provided nutritionists with far greater flexibility in the selection of feed raw materials. In particular, researchers identified alternative sources of essential functional micro- ingredients conventionally provided by commodity materials such as fishmeal.

However, MicroBalance® is not limited to the replacement of fishmeal. The concept and the research behind it introduce a new way of thinking, and enable us to choose between a wider range of raw materials to ensure more economic and sustainable fish feed for aquaculture without detracting from feed performance, fish welfare or end product quality.

Recirc-Ready

RecircReady is Skretting's complete range of recirculation system-specific feeds. Through the incorporation of functional ingredients into very precise formulations, Skretting’s upgraded RecircReady portfolio is helping freshwater salmon hatcheries achieve optimal fish performance, water quality and efficiency.

Through extensive trials at research facilities in Norway and Italy, RecircReady feeds incorporate very specific patented functional ingredients that bind faecal matter. In recirculation systems this means it is easier to filter and remove solid waste particles, thus reducing the amount of suspended solids in the system. As the faeces has a higher structural stability, soluble leaching of nutrients is substantially reduced.

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Models

AquaSim: an aquaculture production modelling program

Combining biology, quality and economics, our robust set of innovative AquaSim management tools give qualified references through which fish farmers can calculate expected farm performance and which also help them to further optimise their production.

Over the course of the last 20 years, we have established a comprehensive portfolio of growth models for the large number of species that we supply feeds for. The purpose of these growth models is to forecast how fish will perform in their surrounding conditions and to give cost-benefit evaluations of many farming situations.

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Technology

NIR

NIR stands for Near Infrared Reflectance. This form of spectroscopy uses the spectrum of reflected infrared light to provide information about the sample onto which the light is shone. In essence, the various components of the sample will absorb specific wavelengths out of the infrared range. The extent to which each wavelength is absorbed indicates the presence and the proportion of each component in the sample.

The NIR analytical equipment installed at every Skretting plant worldwide provides rapid, accurate analyses of all raw materials, also of meal mixes and finished feeds.

“NIR is a very practical method for use by the production teams at feed plants,” says Ørjan Breivik, the researcher responsible for NIR analyses at the Skretting Aquaculture Research Centre (ARC) in Norway. “Samples need little or no preparation and results are available almost instantly.

“The information they produce enables formulators to ensure finished feeds match the specifications precisely and that customers receive feeds with all the benefits the research team and product developers intended.”