Nutreco Feed Tech Challenge 2018

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Sustainable non-poluting Fingerling Feed

It is the production of fingerling feed that has a reduced impact on environment and is made from sustainable sources that are already know for their high protein contents and quality.

By now fingerling feed is made in a dust form with high contents of unsustainable fish meal and it pollutes water when fed to fish.

The alternative I propose is to develop a feed with sustainable products and through a process that is non-polluting for culture water.

When a solution containing sodium alginate is dripped into a calcium bath, calcium ions react with alginate molecules by allowing them to align and bind so that a thin gel membrane forms around the droplets. The interior of a droplet that is being exposed to calcium ions will eventually end up completely gelled. This process will decrease water pollution.

Feed ingredients to use in this case, instead of fish meal, can be a mixture of:

Microalgae: Spirulina, Dunaliella, Thalassiosira, Isochrysis, Haematococcus, Chlorella
Probiotic bacteria: Enterococcus, lactobacillus. Saccharomyces
Organic acids: Lactic, citric, acetic acids
Others: alpha-Beta Glucans, 1,7 alpha methil testosterone. active coal

Describe the problem your company wishes to solve and how your product or service will solve it

Fish fingerlings are usually fed powdered feed containing a high content of crude protein (around 45-55%) and a major component of this feed is usually fish meal. Feed presentation is in a dust or powder form. This feed doesn't float and when fed to fingerlings they eat it while it is falling to the bottom, this process pollutes culture water when powder dissolves in and very frequently leftover feed accumulates in the bottom, decreasing water quality and causing the appearance of some disease.

Fish meal is one the non-sustainable feed ingredients used in aquaculture and is one of the main ingredients in fingerling feed.

An ideal food can be made in a more sustainable way through a spherification process, with the inclusion of micro algae, probiotic bacterias and growth promoters.

  • Through Spherification process, feed of the appropriate size can be produced for the size of the fingerlings and because it gels the contents no feed is dissolved in culture water and so waste is reduced and pollution is avoided and this helps in the control and maintenance of water quality.
  • Being made of easily produced microorganisms, this feed is sustainable, reducing the requirements of fish meal.

Feed like this will be sustainable, improve of the quality of the feed and decrease of waste/improve water quality. We can improve product life and manageability.

Describe other business assistance that you are seeking from Nutreco

Are you available to participate in the final event in the Netherlands 28, 29, and 30 May? All expenses will be covered by Nutreco


Describe how the prize - a validation trial in our facilities - could boost the development of your business

This new feed to be developed will be in high demand in Fish Hatcheries for many aquatic species, Feeds with different ingredients and processes are now been used by the shrimp industry. There is not available any product like this made at industrial scale.

If you already have a website for your business, please share the URL

edited on Mar 27, 2018 by Roberto Marchesini

teresa debesa Mar 27, 2018

The idea has been progressed to the next milestone.

Reply 1

David Peggs Mar 28, 2018

Hi Roberto,
Thanks for your submission. Do you think, or have carried out studies to find out if the spherification process has any effect on the availability of nutrients once it has been consumed? and can you say a bit more about how you have tested the water quality of rearing water with your product vs others?

Reply 1

Roberto Marchesini Mar 28, 2018

Hi David.
No, I have not, but I can tell you that the spherification process only gelifies the contents, the chemical compounds does not fixes, attaches or binds to jthe nutrients in the ingredients. Imagine it just like making jelly with fruit inside. One the droplets are done, they must be cleaned from any leftover liquids, so once you pour them in culture water there is no polluting liquids or fines like in powder feed.

Reply 0

Saravanan Subramanian Mar 28, 2018

Hi Roberto,

Thanks for your proposal. You mentioned that "There is not available any product like this (Sustainable non-polluting Fingerling Feed) made at industrial scale".

For your information, there are number of commercial fish and shrimp larvae (microencapsulated, microbound, microextruded) feed available in the market produced using advanced technology like micro-extrusion, marumerization etc.
Please have look at the range of fish and shrimp life-start feed products (Gemma, Perla, Nutra, PL) from Skretting in the below link
Our lifestart feeds for fish and shrimp not only provide all vital nutrients for better larvae growth and survival, and but also provides high water stability to ensure optimal water quality in aqua-hatcheries.

Best regards,

Reply 1

Roberto Marchesini Mar 28, 2018

Hi Saravanan. Thanks for your input.
Skreeting is not well known in Central America, where I am from. Any other additional information would be good.
My idea is to replace micropellets or powdered feed (whose characteristics are low shelf life and affects water quality), with a product that can include sex reversing hormones, has no dust and might have a long shelf life with pasteurization. Yes, the final product might be pasteurized and be packed in high vacuum bags.
Pelletization implies pressure, vapor and heat, and that always destroy some of the aminoacid contents. Spheronation or marumerization is another process. Spherification does not uses heat, pressing or vapor, that lets us use hormones in the feed, that will not be destroyed.

Reply 0

Khalil Safaei Apr 10, 2018

Good luck!

Reply 0

Khalil Safaei Apr 10, 2018

Great idea!

Reply 0