Response of rainbow trout to source and level of supplemental dietary methionine
Comparative Biochemistry and Physiology, Part A: Physiology
- H.A. Poston
1. Methionine and total sulfur amino acid (TSAA) requirements of rainbow trout (Salmo gairdneri) were investigated by feeding graded isosulfurous levels of l- and dl-methionine, l-cystine, and the free acid and calcium forms of methionine hydroxy analog (MHA).
2. Added cystine did not promote growth, survival or prevent cataracts.
3. l-methionine produced fastest growth, followed by dl-methionine, CaMHA and free acid MHA.
4. Trout fed CaMHA gained 85.7 and 92.3% as much as those fed l-methionine and dl-methionine.
5. Within each experiment, the level of L-methionine isomer that prevented cataracts was constant (1.86 g/100g protein in experiment (1), 1.45 in experiment (2) and was lower than for maximum growth (2.89 and 2.15 g) regardless of methionine source.
Additional publication details
- Publication type:
- Publication Subtype:
- Journal Article
- Response of rainbow trout to source and level of supplemental dietary methionine
- Series title:
- Comparative Biochemistry and Physiology, Part A: Physiology
- Year Published:
- Contributing office(s):
- Leetown Science Center
- 6 p.
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