The effect of dietary protein-energy levels on growth and metabolism of milkfish (Chanos chanos Forsskal)
Abstract
- Groups of milkfish juveniles (mean weight, 2.8 g) were fed diets containing white fishmeal and gelatin with varying protein-energy to total metabolizable energy (PE:TME) ratios.
- Amino acids were incorporated in the diets to stimulate the pattern of milkfish protein. The control diet contained fishmeal as sole protein source and was not supplemented with amino acids
- Among the amino acid supplemented diets, best growth was observed at PE:TME ratio of 44.4%. However, the control diet gave better growth rate than any of the amino acid supplemented diets
- Specific activities of pyruvate kinase (PK) and glutamate dehydrogenase (GDH) increased significantly with increase in dietary protein-energy level.
Citation
Coloso, R. M., Benitez, L. V., & Tiro, L. B. (1988). The effect of dietary protein-energy levels on growth and metabolism of milkfish (Chanos chanos Forsskal).Publisher
ElsevierSubject
Collections
- Journal Articles [1064]
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Milkfish nutrition: a review
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Article
Lactate dehydrogenase isozyme patterns during the development of milkfish, (Chanos chanos (Forskal))
-Kalikasan, The Philippine Journal of Biology , 1981 - University of the Philippines at Los BañosPolyacrylamide disc gel electrophoresis was done to determine the lactate dehydrogenase (LDH) isozyme patterns for fry (5-3 mg), fingerling (6-12 g), pond-size (150-250 g) and adult (6-9 kg) milkfish. The patterns were tissue specific; the different tissues examined, viz., eye, liver, heart, and skeletal muscle had different expressions of LDH isozymes. The resolved patterns appeared to be products of LDH gene loci A, B, and C. Subunits A and B were present in all tissues. A4 and B4 were predominant in skeletal and heart muscle, respectively; the two associated non-randomly in vivo and formed only the heteropolymers A3B and AB3. A liver band, L4, was most conspicuous in the fingerling, pond-size, and adult; it was assumed to be coded by locus C. A negatively charged band, X4, was detected in fully developed ovary and in fry homogenized as whole individuals, but it could not be resolved in tissues of fingerling. Six-mo old stunts and 3-mo old fingerlings had similar LDH patterns for all tissues examined. The patterns for 11-mo old stunts and fingerlings also were similar but the one for the eye of the former was the same pattern resolved for the eye of adults. There was no change in the LDH isozyme patterns of milk fish stunted for 6 mo under different salinity levels (0-5, 15-20, 32-35 ppt). -
Conference paper
Research on marine and freshwater fishes
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