Choline metabolism and nutritional requirement of lake trout (Salvelinus namaycush)
Journal of Animal Science
By: H. G. Ketola
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Abstract
Duplicate lots of 2-g lake trout (Salvelinus namaycush) were fed a purified diet alone and with equimolar supplements of aminoethanol, methylaminoethanol, dimethylaminoethanol, choline or betaine. Supplements of choline, methyl- and dimethylaminoethanol significantly increased growth rate and reduced liver fat content, whereas aminoethanol and betaine did not. These results suggest that trout biosyn-thesize choline from methyl- and dimethylaminoethanol but not from aminoethanol or betaine.
In another experiment triplicate lots of 5-g trout were fed diets containing graded levels (0, 500, 1,000, 2,000 and 4,000 mg/kg) of choline. Growth results showed that the requirement for choline is no greater than 1,000 mg/kg of diet.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Choline metabolism and nutritional requirement of lake trout (Salvelinus namaycush) |
| Series title | Journal of Animal Science |
| DOI | 10.2527/jas1976.432474x |
| Volume | 43 |
| Issue | 2 |
| Year Published | 1976 |
| Language | English |
| Publisher | Oxford Academic |
| Contributing office(s) | Leetown Science Center |
| Description | 4 p. |
| First page | 474 |
| Last page | 477 |