The Effect of Addition of Fermented Water Hyacinth (Eichornia crassipes) in the Artificial Feeds on for the Larval Growth of Catfish (Pangasius pangasius)

Abstract

Small catfish is one of freshwater fish which be liked because have meal taste delicious. To increas the small catfish production can be done through increasing feed quality, because feed quality can influence fish growth and efficiency using of feed. Substitution of water hyacinth flour with Trichoderma sp in artificial feed need to be examined for increasing of small catfish production. The purpose of this research was to know the effect of water hyacinth flour which have been fermented as material artificial feed to growth, efficiency of feed using, ration of protein efficiency, and seed’s small catfish that growth. Small catfish seed which is used having weight of body between 2 till 3 grams/ in larval. Fish is kept with solid mater 1 in larval/litre in 10 liters bucket plastic volume. Total of placement used is 20. During the larva culture, disifon is used to clean the residue of feed and feces everday, then water that lose substitude that is with clean water. Feed given 3 time per day (morning, afternoon and evening) as 5% from weight of fish biomass. The experiment method was used in this research with completely randomized design. The treatment used as artificial feed with comparing between prosentage content of water hyacinth flour and bran flour as 0:100, 25:75, 50:50, 75:25, and 100:0% each for treatment A, B, C, D, and E. This research had done in Satker PBIAT Ambarawa, Semarang Regency. Research preparation research was carried out at July and August, with fish caring observation in 42 days at September and October. The result of this research that using of flour substitution water hyacinth flour to feed artificial give effect that no real (P>0,05) to relative growth rate (RGR), efficiency of using of feed (EPP), protein efficiency ratio (PER), and survival rate (SR). Because of that, the function of water hyacinth flour as bran flour substitution into artificial feed can be changed 100%. For research water quality still in optimal condition. Key words: Fermentation, Water hyacinth, Trichoderma sp, Growth, Small catfish, Pangasius pangasius