Effect of dietary electrolytes and histidine on histidine metabolism and acid-base balance in rainbow trout (Salmo gairdneri)
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Abstract
1. Rainbow trout fingerlings were fed diets containing 1.2, 1.8 and 2.6% histidine and two mixtures of Na, K and Cl (Na + K - Cl = 0 or -200 meq/kgdiet) in a factorial design.
2. Growth and efficiency of feed conversion were not affected by histidine in the diet when it contained the −200 meq/kg electrolyte mixture, but with the 0 meq/kg level, 2.6% histidine depressed both measures of response.
3. Histidine increased plasma and muscle histidine levels, increased hepatic histidase activity, but did not affect hepatic histidine-pyruvate aminotransferase activity.
4. Muscle-free histidine concentrations were markedly higher and lysine concentrations were lower in trout receiving 0 meq/kg than those receiving the −200 meq/kg electrolyte mixture.
5. The electrolyte balance of the diet has a marked effect on the metabolism of histidine in trout.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Effect of dietary electrolytes and histidine on histidine metabolism and acid-base balance in rainbow trout (Salmo gairdneri) |
| Series title | Comparative Biochemistry and Physiology, Part B: Comparative Biochemistry |
| DOI | 10.1016/0305-0491(84)90187-1 |
| Volume | 78 |
| Issue | 4 |
| Year Published | 1984 |
| Language | English |
| Publisher | Elsevier |
| Contributing office(s) | Leetown Science Center |
| Description | 7 p. |
| First page | 777 |
| Last page | 783 |
| Google Analytic Metrics | Metrics page |