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Dietary fatty acids and their ratio: impact on Atlantic salmon health, mineral status and intestinal lipid transport

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Relation http://eprints.cmfri.org.in/16154/
https://bora.uib.no/bora-xmlui/handle/11250/2999714
 
Title Dietary fatty acids and their ratio: impact on Atlantic salmon health, mineral status and intestinal lipid transport
 
Creator Chandrasekar, S
 
Subject Theses
 
Description The rapid growth of the aquaculture industry and the sharp decline of capture fisheries
necessitates finding alternative sources for fish oil and fish meal in aquafeeds. However,
the inclusion of VOs in aquafeed alters the dietary fatty acid composition, significantly
reducing the amount of essential n-3 LC-PUFA, inducing the n-3/n-6 ratio, and
increasing the MUFA contents. In the last few decades, numerous studies have been
conducted to demonstrate the possibility of partial or complete replacement of FO with
vegetable oils (VOs) without any adverse effects on the growth and welfare of the fish,
provided sufficient n-3 LC-PUFA from other dietary sources. However, most feeding
trials are run in controlled, stable environmental conditions, where there is minimal
stress on fish. In contrast, under demanding environmental conditions in sea cages, fish
are exposed to various stressors, including fluctuating water temperatures, handling,
parasitic pressure, delousing, etc. Therefore, we need increased knowledge on how
optimal FA nutrition can be used to maintain a healthy and robust fish that can cope
with stressful situations, such as fluctuating environmental conditions and disease
pressure. Besides the change in dietary FA profile, increased inclusion of plant
ingredients also reduces the supply and availability of dietary minerals to fish. Further,
little is known about how this change in the FA profile affects the intracellular fate of
these fatty acids in intestinal cells. Therefore, this Ph.D. project investigates how
stressful conditions combined with the change in dietary FA level affect the absorption
and intracellular fate of dietary fatty acids, stress and immune responses, and the
utilization of minerals in the fish.
 
Date 2022
 
Type Thesis
NonPeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/16154/1/Dietary%20fatty%20acids%20and%20their%20ratio_2022_S%20Chandrasekar_PhD%20Theses.pdf
Chandrasekar, S (2022) Dietary fatty acids and their ratio: impact on Atlantic salmon health, mineral status and intestinal lipid transport. Doctoral thesis, University of Bergen.