The optimum dietary indispensable amino acid pattern for growing Atlantic salmon (Salmo salar L.) fry.

To determine the optimum indispensable (I) amino acid (AA) balance in Atlantic salmon (Salmo salar L.) fry, a single protocol established for the pig was adapted. The balance was calculated from the reduction in N gain after replacing about 45% of a single IAA by a mixture of dispensable AA in isoni...

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Bibliographic Details
Published in:British Journal of Nutrition
Main Authors: Rollin, Xavier, Mambrini, Muriel, Abboudi, Tarik, Larondelle, Yvan, Kaushik, Sadasivam J
Other Authors: UCL - AGRO/MILA - Département des sciences du milieu et de l'aménagement du territoire, UCL - AGRO/BAPA - Département de biologie appliquée et des productions agricoles
Format: Article in Journal/Newspaper
Language:English
Published: 2003
Subjects:
Amino Acids
Animal Nutrition Physiology
Animals
Diet
Dietary Proteins
Gelatin
Nitrogen
Salmon
Weight Gain
Atlantic salmon
Salmo salar
Online Access:http://hdl.handle.net/2078.1/9688
https://doi.org/10.1079/BJN2003973
Description
Summary:To determine the optimum indispensable (I) amino acid (AA) balance in Atlantic salmon (Salmo salar L.) fry, a single protocol established for the pig was adapted. The balance was calculated from the reduction in N gain after replacing about 45% of a single IAA by a mixture of dispensable AA in isonitrogenous diets. We confirmed that the mixture of AA simulating the AA pattern of cod-meal protein and gelatine (46:3, w/w) was used with the same efficiency as cod-meal protein and gelatine. From the deletion experiment an optimum balance between the IAA was derived. Expressed relative to lysine = 100, the optimal balance was: arginine 76 (SE 0.2), histidine 28 (SE 2.2), methionine + cystine 64 (SE 1.7), phenylalanine + tyrosine 105 (SE 1.6), threonine 51 (SE 2.4), tryptophan 14 (SE 0.7), valine 59 (SE 1.7). No estimates were made for isoleucine and leucine. Expressed as g/16 g N, the optimal balance was: arginine 4.0 (SE 0.0), histidine 1.5 (SE 0.1), lysine 5.3 (SE 0.2), methionine + cystine 3.4 (SE 0.1), phenylaline + tyrosine 5.6 (SE 0.1), threonine 2.7 (SE 0.1), tryptophan 0.7 (SE 0.0), valine 3.1 (SE 0.1). This AA composition is close to that of the Atlantic salmon whole-body, but using it as an estimation of the IAA requirements may lead to an overestimation of the branched-chain AA requirements and an underestimation of aromatic and S-containing AA requirements. The results are discussed in accordance with the key assumptions associated with the model used (broken-line model, IAA efficiencies and maintenance requirements).

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