Dietary Fat, n-3 LC-PUFA, and Zinc Effects on Salmon Absorption
Author Information
Author(s): HaoHang Fang, Nini H. Sissener, Øystein Sæle, Trygve Sigholt, Antony J. Prabhu
Primary Institution: Institute of Marine Research, Bergen, Norway
Hypothesis
How do dietary fat levels, n-3 LC-PUFA, and zinc interact to affect postprandial absorption in Atlantic salmon?
Conclusion
Increased zinc levels in feed significantly raised postprandial plasma zinc levels in Atlantic salmon at lower temperatures, but dietary fat and n-3 LC-PUFA did not affect intestinal zinc or fat transport.
Supporting Evidence
- Increased zinc in feed raised plasma zinc levels significantly at lower temperatures.
- Postprandial plasma profiles of other minerals were affected by time but not by dietary fat or n-3 LC-PUFA.
- Intestinal gene expression related to zinc uptake was not affected by dietary fat or n-3 LC-PUFA.
Takeaway
This study looked at how different diets affect how salmon absorb nutrients after eating. It found that more zinc in their food helps them absorb more zinc, but fat and certain oils didn't change how they absorbed nutrients.
Methodology
Two short-term feeding trials were conducted with Atlantic salmon, focusing on dietary zinc and fat levels, and their effects on postprandial plasma parameters and intestinal nutrient uptake.
Limitations
The study was limited to specific temperature ranges and did not explore long-term effects of dietary changes.
Participant Demographics
Atlantic salmon (Salmo salar) used in trials were acclimated and randomly distributed in tanks.
Statistical Information
P-Value
p<0.01
Statistical Significance
p<0.01
Digital Object Identifier (DOI)
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