Dietary amino acid requirements of pebbly fish, Alestes baremoze (Joannis, 1835) based on whole body amino acid composition
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Date
2019
Journal Title
Journal ISSN
Volume Title
Publisher
Aquaculture Reports
Abstract
Alestes baremoze is a valuable food fish with a wide geographical distribution in East, North and West Africa.
Currently, the nutritional requirements of A. baremoze have not yet been determined, which hinders attempts
towards developing appropriate feed formulations for its culture. This study was thus conducted to estimate
essential amino acid (EAA) requirements of A. baremoze using the A/E ratio method, as a guide in formulating its
diet. Fish samples used in the study were categorised into four classes according to their fork lengths (1–12 cm;
13–24 cm; 25–36 cm and 37–48 cm), with each class consisting of 10 fish. Results from the amino acid composition
analysis revealed significant difference (P<0.05) in the concentration of tryptophan, lysine, methionine,
threonine, phenylalanine, isoleucine and valine amongst the different class sizes of A. baremoze. The A/E
ratios of A. baremoze muscle tissue were in the same range with those obtained from other fish species, except for
tryptophan. When expressed as a percentage of dietary protein, the EAA requirements of A. baremoze, were
however not significantly different (P > 0.05) within the four classes. The EAA requirement profiles for A.
baremoze were found to be similar to those observed in other omnivorous fish species. Considering the importance
of A. baremoze as a potential species for freshwater aquaculture, the present data provides guidance to
the development of test diets with appropriate amino acid inclusions until dose response treatments are carried
out.
Description
Keywords
Alestes baremoze, Amino acid, composition Dietary, requirements
Citation
Kasozi, N., Iwe, G., Sadik, K., Asizua, D., & Namulawa, V. T. (2019). Dietary amino acid requirements of pebbly fish, Alestes baremoze (Joannis, 1835) based on whole body amino acid composition. Aquaculture Reports, 14, 100197.