Oxidation of phenylalanine and threonine in response to dietary arginine supply in rainbow trout ( Salmo gairdneri R.)
Identifieur interne : 001D57 ( Main/Merge ); précédent : 001D56; suivant : 001D58Oxidation of phenylalanine and threonine in response to dietary arginine supply in rainbow trout ( Salmo gairdneri R.)
Auteurs : B. Fauconneau ; Anne Basseres [France] ; S. J. Kaushik [France]Source :
- Comparative Biochemistry and Physiology, Part A: Physiology [ 0300-9629 ] ; 1992.
Abstract
1.1. The effect of increasing amounts of dietary arginine on oxidation of other amino acids was tested. Two experiments were conducted in rainbow trout fed on diets containing grading amounts of arginine from 0.55 to 2.55%.2.2. The growth of fish and the efficiency of food conversion were measured and there were no significant differences between the different diets tested.3.3. After an oral administration of either l-[U-14C]phenylalanine or l-[U-14C]threonine, the rate of excretion of 14CO2 over a period of 3 hr and the radioactivity in the free pool and the protein pool of liver at the end of that period were measured.4.4. The rate of oxidation of phenylalanine and threonine was assessed using their respective specific activities in the free pool of liver.5.5. The rate of oxidation of phenylalanine increased from 246 ± 101 nmol/g body weight/3 hr at 0.55% dietary arginine supply to 679 + 85 nmol/g body weight/3 hr at 2.00% arginine then it decreased for higher arginine supply.6.6. The oxidation rate of threonine increased from 50 ± 22nmol/100g body weight/3 hr up to 774 ± 195 nmol/100 g body weight/3 hr for a dietary arginine supply of 2.45% then it decreased.7.7. It was concluded that oxidation of phenylalanine and threonine could not be used as an indirect indicator of arginine status.
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DOI: 10.1016/0300-9629(92)90552-2
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Fauconneau</name><affiliation><wicri:noCountry code="subField">9928-5002</wicri:noCountry></affiliation></author><author><name sortKey="Basseres, Anne" sort="Basseres, Anne" uniqKey="Basseres A" first="Anne" last="Basseres">Anne Basseres</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>Fish Nutrition Unit, INRA, B.P. 3, 64310 St Pee Sur Nivelle</wicri:regionArea><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Aquitaine</region><settlement type="city">St Pee Sur Nivelle</settlement></placeName></affiliation></author><author><name sortKey="Kaushik, S J" sort="Kaushik, S J" uniqKey="Kaushik S" first="S. J." last="Kaushik">S. J. Kaushik</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>Fish Nutrition Unit, INRA, B.P. 3, 64310 St Pee Sur Nivelle</wicri:regionArea><placeName><region type="region" nuts="2">Nouvelle-Aquitaine</region><region type="old region" nuts="2">Aquitaine</region><settlement type="city">St Pee Sur Nivelle</settlement></placeName></affiliation></author></analytic><monogr></monogr><series><title level="j">Comparative Biochemistry and Physiology, Part A: Physiology</title><title level="j" type="abbrev">CBAOLD</title><idno type="ISSN">0300-9629</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1992">1992</date><biblScope unit="volume">101</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="395">395</biblScope><biblScope unit="page" to="401">401</biblScope></imprint><idno type="ISSN">0300-9629</idno></series><idno type="istex">D0CD1F865247EDF75E707C76586FBD24E75D4950</idno><idno type="DOI">10.1016/0300-9629(92)90552-2</idno><idno type="PII">0300-9629(92)90552-2</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0300-9629</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">1.1. The effect of increasing amounts of dietary arginine on oxidation of other amino acids was tested. Two experiments were conducted in rainbow trout fed on diets containing grading amounts of arginine from 0.55 to 2.55%.2.2. The growth of fish and the efficiency of food conversion were measured and there were no significant differences between the different diets tested.3.3. After an oral administration of either l-[U-14C]phenylalanine or l-[U-14C]threonine, the rate of excretion of 14CO2 over a period of 3 hr and the radioactivity in the free pool and the protein pool of liver at the end of that period were measured.4.4. The rate of oxidation of phenylalanine and threonine was assessed using their respective specific activities in the free pool of liver.5.5. The rate of oxidation of phenylalanine increased from 246 ± 101 nmol/g body weight/3 hr at 0.55% dietary arginine supply to 679 + 85 nmol/g body weight/3 hr at 2.00% arginine then it decreased for higher arginine supply.6.6. The oxidation rate of threonine increased from 50 ± 22nmol/100g body weight/3 hr up to 774 ± 195 nmol/100 g body weight/3 hr for a dietary arginine supply of 2.45% then it decreased.7.7. It was concluded that oxidation of phenylalanine and threonine could not be used as an indirect indicator of arginine status.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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