Objective
The main objectives of the project are to reduce ammonia-N losses through optimising amino acid balance and to elucidate the mechanisms explaining inter-specific variations in nitrogen excretion and utilization in four different species of teleosts (trout, sea bass, sea bream and turbot).
While some data on freshwater continental species is available, the potential of N utilisation, the routes and rates of N excretion of marine species have not received as much attention as they deserve. To benefit from the relative advance of our knowledge on continental freshwater species, the three marine finfish species will be compared to rainbow trout. The importance of amino acid balance on the reduction of N (ammonia and urea) excretion and optimisation of N utilisation will be studied. Specific attention will be paid to arginine, an essential amino acid in fish having multiple metabolic roles.
Therefore the proposal will consist of undertaking specific nutritional trails with the four different finfish species in order to
1) determine maintenance and growth requirement of protein and arginine,
2) study the effects of dietary arginine supply in plant protein-rich diets and
3) evaluate the effects of dietary supply of nucleic acids.
The studies with complementary approaches will be conducted in a comparative manner, using the same protocols and diets for
a) quantifying amino acid needs for maintenance and growth,
b) monitoring ammonia and urea excretions,
c) determining the activities of key enzymes of overall amino acid oxidation as well as urea synthesis and
d) measuring protein accretion and degradation
The data obtained will enable the optimisation of dietary formulation leading to improved protein yield in the different fish species. This inter-disciplinary comparative approach will form the basis to work out a general model on protein utilisation and N excretion by fish, which will be of use to estimate the potentialities of other new candidate species, or those grown under different culture conditions.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences biological sciences biochemistry biomolecules nucleic acids
- natural sciences chemical sciences electrochemistry electrolysis
- natural sciences biological sciences zoology ichthyology
- natural sciences chemical sciences organic chemistry amines
- natural sciences biological sciences biochemistry biomolecules proteins enzymes
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Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
64310 Saint-Pee-sur-Nivelle
France
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.