The growth and probiotic characteristics of Bacillus velezensis BS in soybean meal used as synbiotic-like preparations for Litopenaeus vannamei culture

In this study, we evaluated whether bacteria can utilize the prebiotic present in soybean meal and determine the prebiotic index and activity score of the soybean meal by the newly isolated probiotic, Bacillus velezensis BS. The effect of soybean meal-containing medium on the growth, digestive enzyme secretion, and pathogenic resistance of the B. velezensis BS were also examined.