Document Type : Primary Research paper
In the present study, water hyacinth, Eichhornia crassipes leaf is attempt to be used as protein source in Siamese Gourami, Trichogaster pectoralis farming. Preliminary study revealed that E. crassipes leaf possess high protein content (12.1±1.81%). Therefore, further study was carried out to evaluate the potential of the plant as alternative protein source for Siamese Gourami farming.There were five treatments based on different percentage of combination of E. crassipes leaf and fish meal namelyT1 (20% of E. crassipes leaf + 80% fish meal), T2 (40% of E. crassipes leaf + 60% fish meal), T3 (60% of E. crassipes leaf + 40% fish meal), T4 (80% of E. crassipes leaf + 20% fish meal) and T5 (100% of E. crassipes leaf) with three replicates for each treatment. The control group of fish was fed with fish meal. The feeding trial is continuing until four weeks and the liver of fish of each treatment is subjected to histology study in order to evaluate the toxicity level of E. crassipes leaf against fish that received treatment. The results of the present study revealed that treatment T1 showed the best performance in term of growth rate and had significance difference (p < 0.05) compared to other groups. Furthermore, T1 treatment performed promising result in palatability and toxicity experiment reflect the huge potential of the plant as protein source in Siamese Gourami farming.