Related Experiment Video
Updated: Jul 22, 2026

Detection of Tilapia Lake Virus Using Conventional RT-PCR and SYBR Green RT-qPCR
Published on: November 10, 2018
Amino acid requirements for growth of Nile tilapia
1Binangonan Research Station, Southeast Asian Fisheries Development Center, Rizal, Philippines.
Abstract:
A series of feeding experiments was conducted in aquaria to determine the quantitative requirements of the 10 essential amino acids for growth of young Nile tilapia (Oreochromis niloticus). The test diets contained casein and gelatin supplemented by crystalline L-amino acids to provide an amino acid profile similar to 28% whole egg protein except for the test amino acid. Each set of test diets consisted of seven isonitrogenous diets containing varying levels of the amino acid to be tested. Weight gains analyzed by the broken line regression method indicated the following requirements as a percentage of the dietary protein: lysine, 5.12; arginine, 4.20; histidine, 1.72; valine, 2.80; leucine, 3.39; isoleucine, 3.11; threonine, 3.75; tryptophan, 1.00; methionine with cystine (0.54% of the protein), 3.21; and phenylalanine with tyrosine (1.79% of the protein), 5.54.
More Related Videos
Related Concept Videos
Amino acids
Proteins: Dietary Sources and Requirements
Inorganic Nitrogen Assimilation
Amino Acid Biosynthetic Pathways
Oxygen Requirements and Growth Patterns
Designing Growth Media for Bioreactors

