Population and Diversity of Endophytic Bacteria Associated with Medicinal Plant Curcuma zedoaria  

Oleh:

Munaeni, Waode ; Yuhana, Munti ; Widanarni

Jenis: Article from Journal - ilmiah nasional - terakreditasi DIKTI
Dalam koleksi: Microbiology Indonesia vol. 08 no. 2 (Jun. 2014), page 73-80.
Topik: frequencies; Litopenaeus vannamei; micro-encapsulated; synbiotic; Vibrio harveyi
Fulltext: 277-827-1-PB_Ros.pdf (550.04KB)

Isi artikel

The aim of this study was to evaluate the effect of micro-encapsulated synbiotic application at different frequencies for luminous disease control in white shrimp ( ). The luminous disease is caused by . In this experiment, a synbiotic which was a combination of the probiotic sp. NP5 Rf and the oligosaccharides from sweet potato ( L.) jago variety was applied. The synbiotic was encapsulated by spray drying method. The experiment was conducted by supplementing the shrimp's diet with the micro-encapsulated synbiotic for 40 d. Treatments included the administration micro-encapsulated synbiotic at different frequencies i.e. once a week (A), twice a week (B), daily (C), and without microencapsulated synbiotic (control treatment). The control treatment consisted of positive (K+) and negative (K-) controls. After 30 d period, all of the shrimp were challenged by intramuscular injection of pathogenic Rf at a cell concentration of 10 CFU mL except the negative control. The treatment C resulted in significantly higher survival rate (SR), specific growth rate (SGR), and immune responses than those of the controls, whereas the feed conversion ratio (FCR) was lower than the controls. In addition, the population of sp NP5 Rf and total bacterial count (TBC) in the intestines increased, whereas the population of Rf and the total vibrio count (TVC) were lower compared to the controls.

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