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Limitation by dietary means of environmental pollution from farming of salmonids in cages. (COMPLETED 10/92) - AE0510
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Description
Summary objectives:-
Investigate methods of optimising the digestibility of
certain materials (mainly complex carbohydrates and some
proteins) in fish diets which result in a decrease in the
physical pollution in farm effluents arising from undigested
material.
Key customer purpose:-
Reduce the chemical and physical effects of fish farm
effluents on the aquatic environment in accordance with
MAFF's responsibilities under the Acts. Enable MAFF policy
for aquaculture to be developed in the light of research
findings. |
Objective
Intensive fish farming leads to chemical and physical
pollution of the Aquatic environment. Effluents from fish
farms contain uneaten food, undigested food voided in the
faeces and metabolic end products such as amonia. We
propose to increase the digestibility of certain materials
(mainly complex carbohydrates and some proteins) in fish
diet , leading to increases in efficiency of utilisation of
diets and hence significant decreases in the levels of
undigested material in the faeces. Hence problems due to
solid materials in the farm effluents will be reduced.(ii)
To prepare diets containing predigested material. Compare
with control diets for water stability. Feed diets to fish,
collect and analyse faeces and water pollution.
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Time-Scale and Cost
From:
1989
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To:
1992
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Cost: £154,675 |
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Contractor / Funded Organisations
University - Aberdeen |
Keywords
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Fields of Study
Environmental Protection - Marine |