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Advisor(s)
Abstract(s)
Vitamin K (VK), and particularly phylloquinone (VK1), is an essential micronutrient whose stability in aquafeeds has not been extensively evaluated. Losing stability can lead to
nutritional deficiency, which is known to hamper fish development and physiology. Gut microbiota
also plays a key role in host health through the interaction with several biological processes. The
present study evaluated the best storing conditions of aquafeeds when supplemented in VK1 and
intestinal microbiota modulation in Senegalese sole (Solea senegalensis) juveniles. Aquafeeds with
a high level of VK1 supplementation required storage at −20 ◦C for short-term (up to 7 days) and
at −80 ◦C for long-term (up to three months) to ensure optimal preservation. Furthermore, gut
bacterial communities of Senegalese sole specimens fed with a commercial feed supplemented with
VK1 showed a better-balanced population of microorganisms in the intestine, which might improve
Senegalese sole health during the ongrowing phase. These results provide the practical guidelines
for the proper storing of aquafeeds in the industry when supplemented with VK1 and highlight
the potential benefits of dietary VK1 supplementation for a balanced intestinal microbiota and
overall fish health.
Description
Keywords
Phylloquinone Fat-soluble vitamins Temperature Solea senegalensis Pathogens Flatfish
Citation
Animals 12 (23): 3248 (2022)
Publisher
MDPI