Compound feed for aquaculture
OwnerJana Pickova, Afaf Kamal-Eldin +2inventors
InventorsJana Pickova, Afaf Kamal-Eldin, Sofia Trattner, Eva Brännäs
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Abstract
The present invention relates to a fish feed comprising dioxabicyclo[3.3.0]octane derivates, in particular selected sesame lignans, and a vegetable oil or oil mixture comprising at least one 18-carbon chain omega-3 fatty acid. The dioxabicyclo[3.3.0]octane derivate will induce a desaturation and elongation of the 18-carbon chain fatty acid in the fish muscle into longer carbon chain polyunsaturated fatty acids.
Claims25
1-33. (canceled)
A compound feed for aquaculture comprising:
- a lignan represented by formula (I):
- wherein R1 to R6 each independently represents an hydrogen atom, an alkyl group having 1 to 3 carbon atoms or a sugar moiety, or R1 and R2 and/or R4 and R5 together represent a methylene group or an ethylene group and k, m and n each independently represents 0 or 1, and R7 and R8 independently represents a methyl group or —CH2—O— forming a tetrahydrofuran group with the lignan backbone;
- a vegetable oil or vegetable oil mixture present in at least 20% by weight of said feed and having a total 18-carbon chain omega-3 fatty acid content of at least 30% by weight of said vegetable oil or vegetable oil mixture;
- and
- an antioxidant.
A method of altering muscle fatty acid composition in an aquaculture species comprising feeding said aquaculture species with a compound feed for aquaculture comprising:
- a lignan represented by formula (I):
- wherein R1 to R6 each independently represents an hydrogen atom, an alkyl group having 1 to 3 carbon atoms or a sugar moiety, or R1 and R2 and/or R4 and R5 together represent a methylene group or an ethylene group and k, in and n each independently represents 0 or 1, and R7 and R8 independently represents a methyl group or —CH2—O— forming a tetrahydrofuran group with the lignan backbone;
- a vegetable oil or vegetable oil mixture present in at least 20% by weight of said feed and having a total 18-carbon chain omega-3 fatty acid content of at least 30% by weight of said vegetable oil or vegetable oil mixture;
- and
- an antioxidant.
A method of manufacturing a compound feed for aquaculture comprising mixing a lignan represented by formula (I):
- wherein R1 to R6 each independently represents an hydrogen atom, an alkyl group having 1 to 3 carbon atoms or a sugar moiety, or R1 and R2 and/or R4 and R5 together represent a methylene group or an ethylene group and k, m and n each independently represents 0 or 1, and R7 and R8 independently represents a methyl group or —CH2—O— forming a tetrahydrofuran group with the lignan backbone, a vegetable oil or vegetable oil mixture present in at least 20% by weight of said feed and having a total 18-carbon chain omega-3 fatty acid content of at least 30% by weight of said oil or oil mixture, and an antioxidant.
A method of increasing a proportion of N-carbon chain omega-3 fatty acids in muscles of an aquaculture species, where N>18, comprising feeding said aquaculture species with a lignan represented by formula (I):
- wherein R1 to R6 each independently represents an hydrogen atom, an alkyl group having 1 to 3 carbon atoms or a sugar moiety, or R2 and R2 and/or R4 and R5 together represent a methylene group or an ethylene group and k, m and n each independently represents 0 or 1, and R7 and R8 independently represents a methyl group or —CH2—O— forming a tetrahydrofuran group with the lignan backbone.
A method of increasing desaturation and elongation of at least one of stearidonic acid and α-linolenic acid in muscles of an aquaculture species comprising feeding said aquaculture species with a lignan represented by formula (I):
- wherein R1 to R6 each independently represents an hydrogen atom, an alkyl group having 1 to 3 carbon atoms or a sugar moiety, or R1 and R2 and/or R4 and R5 together represent a methylene group or an ethylene group and k, m and n each independently represents 0 or 1, and R7 and R8 independently represents a methyl group or —CH2—O— forming a tetrahydrofuran group with the lignan backbone.
Dependencies are inferred from the claim text.