PhD theses

All Wageningen University PhD theses

  • external user (warningwarning)
  • Log in as
  • language uk
  • About

    Wageningen PhD theses


    This database contains bibliographic descriptions of all Wageningen University PhD theses from 1920 onwards. It is updated on a daily basis by WUR Library.

    Author abstracts and/or summaries are added to all descriptions. A link to the full text dissertation is added to the bibliographic description. In a few cases, no electronic version is available, mostly because of copyright issues.

    Hard copies of all theses are available for loan at WUR Library. To request them, click the link Request this publication in the full record presentation. This is a fee based service.

    mail icon WUR Library, 9 july 2012

     

Record 1 / 18

  • help
  • print

    Print search results

  • export

    Export search results

  • alert
    We will mail you new results for this query: q=*22contaminants*22
Check title to add to marked list
help
Valorisation of waste streams from by-product to worm biomass [PhD thesis]
Laarhoven, Bob \ 2017
biomass - residual streams - animal nutrition - fisheries - organic wastes - helminths

Abstract:
With an 8 % annual growth rate, aquaculture is the fastest growing food production sector in the world (FAO, 2008). It can only be sustainable if it is supported by a similar increase in feed production. This had led to several developments to reduce and replace the amount of fishmeal/ oil in fish diets by plant based ingredients originating from by-products or from crops specifically cultured for this purpose. Although plant oils and proteins are available in bulk amounts, their application in fish feed is questionable as it induces more pressure on land-use due to increased agricultural production and competes with present use as food or feed. This drives several alternative feed source developments which are based on the use of residual streams. Novel feed ingredients based on residual stream conversion can in general be subdivided into two major classes: Single cell protein, mainly from yeast, microalgae and bacteria. These novel feed ingredients have the potential to be more sustainable than fish and plant based proteins/oils if they can be effectively produced from residual nutrients, waste streams or low value by-products from e.g. food or agro industries.

Check title to add to marked list
<< previous | next >>

Show 20 50 100 records per page

 

To support researchers to publish their research Open Access, deals have been negotiated with various publishers. Depending on the deal, a discount is provided for the author on the Article Processing Charges that need to be paid by the author to publish an article Open Access. A discount of 100% means that (after approval) the author does not have to pay Article Processing Charges.

For the approval of an Open Access deal for an article, the corresponding author of this article must be affiliated with Wageningen University & Research.

Please log in to use this service. Login as Wageningen University & Research user or guest user in upper right hand corner of this page.