The Effectiveness of Experimental Diet with Varying Levels of Papain on The Growth Performance, Survival Rate and Feed Utilization of Keureling Fish (Tor tambra)

Abstract

<p>The objective of present study was to determine the optimum level of papain in the diet of <em>keureling </em>fish (<em>Tor tambra</em>). The complete random design was utilized in this study. Six levels of papain dosage were tested in triplicates, i.e. 0 (control); 17.5 mg kg<sup>-1</sup>, 20.0 mg kg<sup>-1</sup>, 22.5 mg kg<sup>-1</sup>, 25.0 mg kg<sup>-1</sup> and 27.5 mg kg<sup>-1</sup> of feed. The experimental fish were fed the experimental diet two times a day at 8 AM and 5 PM at feeding level of 5% body weight for 90 days. The Anova test result showed that papain enzyme gave a significant effect on the weight gain, daily growth rate, specific growth rate, survival rate, feed conversion ratio and feed efficiency (P<0.05). The Duncan multi-rage test result showed that the higher values for all measured parameters were obtained at the dosage of 27.5 mg kg<sup>-1</sup>. Therefore, it is concluded that the optimum dosage of papain enzyme for <em>keureling</em> fish was 27.5 mg kg<sup>-1 </sup>of feed.</p>