Using effective microorganisms as probiotic in Bocourti Cat sh Feed

摘要

A study on using effective microorganisms (EM) as probiotic in Bocourti cat sh (Pangasius bocourti) culture was conducted. Five diets were formulated 1) added 0%EM 2) added 10%EM 3) added 20%EM before pelleting and 4) coated 5%EM and 5) coated 10%EM after pelleting. The experiment diets were fed to Bocourti cat sh (average weight 1.54 g) in oating cages (0.5 m3 20 shes per cage) for 8 weeks. The parameter data were collected every 2 weeks. The results show that the average weight, average weight gain, average daily weight gain, survival rate and feed conver- sion ratio of Bocourti cat sh were not signi cantly different (P>0.05). At the end of the experiment there was an average weight of 15.01-17.06 gram, average weight gain 4.87-6.39 gram, average daily weight gain 1.06-1.21 gram per day, average survival rate 91%-98% and feed conversion ratio (FCR) 2.13-3.01. The results indicate that using EM as probiotic did not affect growth rate and survival rate of Bocourti cat sh when stocked with ngerlings with low density and cultured in good condition.