Bacillus NP5 Improves Growth Performance and Resistance Against Infectious Myonecrosis Virus in White Shrimp
Abstract: Infectious
Myonecrosis (IMN) is one of the most prevalent white shrimp diseases.
Probiotics are widely used in shrimp cultivation because they have been proven
to reduce shrimp disease outbreak. This study aimed to observe the effect of
oraly administered probiotic Bacillus NP5 on the white shrimp's growth
performance, immune response, and resistance to Infectious Myonecrosis Virus
(IMNV) infection. White shrimp Litopenaeus vannamei (2.41±0.07 g individual-1)
were fed with a feed supplemented with different doses of the probiotic Bacillus
NP5, i.e. 102 CFU.g-1 (A), 104 CFU.g-1 (B), 106 CFU.g-1 (C), and control
without any probiotic (negative control, KN; positive control, KP) for 30 days
and with three replications for each dose, then KP, treatment A, B, and C were
challenged intramuscularly with IMNV (100 µl.shrimp-1). The results of the
study showed that white shrimp fed with the supplemented probiotic had higher
Daily Growth Rate (DGR), Feed Conversion Ratio (FCR), and immune response. They
also had the higher Total Hemocyte Count (THC) and resistance to IMNV than the
positive control. Probiotic with concentration of 106 CFU.g-1 gave the highest
value on enhancing growth, immunity, and resistance of white shrimp towards
IMNV infection.
Author: Widanarni Widanarni,
Munti Yuhana, Arief Muhammad
Journal Code: jpperikanangg140018
