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Requirement for tryptophan by milkfish (Chanos chanos Forsskal) juveniles

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Date
1992
Author
Coloso, Relicardo M.
Tiro, Lillian B.
Benitez, Lita V.
Page views
4,385
Subject
amino acids ASFA
diet ASFA
enzymatic activity ASFA
feeding experiments ASFA
fish larvae ASFA
fish physiology ASFA
liver ASFA
nutritional requirements ASFA
protein synthesis ASFA
tryptophan AGROVOC
milkfish AGROVOC
Chanos chanos AGROVOC
Taxonomic term
Chanos chanos GBIF
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Abstract
Groups of milkfish juveniles (mean initial weight 7.7 g) were fed semipurified diets containing 0.9, 1.4, 2.1, 3.1, 4.1 and 6.1 g tryptophan/kg dry diet for 12 weeks. The mean crude protein content of the diets (containing white fishmeal, gelatin and free amino acid mixture to simulate the pattern of hydrolysed milkfish protein) was 49%. On the basis of the growth response, the tryptophan requirement of milkfish juveniles was estimated to be 3.1 g/kg diet. Fish fed low levels of tryptophan exhibited low weight gains and poor feed conversion ratios. Survival (92–100%) was consistently high in all treatments. Fish fed diets containing tryptophan levels greater than 3.1 g/kg had slightly lower survival rates. The activity of hepatic tryptophan pyrrolase showed no significant differences with increasing dietary tryptophan levels. No nutritional deficiency signs were observed other than the depression in growth rates in fish given the tryptophan deficient diets.
URI
http://hdl.handle.net/10862/1370
Suggested Citation
Coloso, R. M., Tiro, L. B., & Benitez, L. V. (1992). Requirement for tryptophan by milkfish (Chanos chanos Forsskal) juveniles. Fish Physiology and Biochemistry, 10(1), 35-41. https://doi.org/10.1007/BF00004652 
DOI
10.1007/BF00004652
Type
Article
ISSN
0920-1742
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  • Journal Articles [1155]

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