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Bacillus subtilis 발효대두박의 사료 내 첨가가 흰다리새우(Litopenaeus vannamei)의 성장, 면역력 및 질병저항성에 미치는 영향
김수환 ( Soohwan Kim ),이초롱 ( Chorong Lee ),장경훈 ( Kyunghoon Chang ),배준영 ( Junyoung Bae ),조성준 ( Seong-jun Cho ),임세진 ( Se-jin Lim ),이경준 ( Kyeong-jun Lee ) 한국수산과학회(구 한국수산학회) 2017 한국수산과학회지 Vol.50 No.1
A feeding trial was conducted to evaluate the effect of dietary supplementation with fermented soybean meal by Bacillus subtilis (BFSBM) on growth performance, feed utilization, innate immunity, water quality, and disease resistance of Litopenaeus vannamei. A basal fish meal-based diet was regarded as a control and two other diets were prepared by replacing 30% fish meal with either soybean meal (SBM) or BFSBM. Triplicate groups of shrimp (0.80 ± 0.010 g) were fed one of the experimental diets for 6 weeks. No differences were found in final body weight, feed conversion ratio, or survival among all dietary treatments after the feeding trial. Shrimp fed the BFSBM diet had significantly higher phagocytic and phenoloxidase activities than those of shrimp fed the SBM diet. Total ammonia concentrations in culture water during a zero water exchange test tended to decrease in tanks where BFSBM diet was provided. Disease resistance of shrimp to Vibrio harveyi tended to increase in the BFSBM group during 14 days of challenge compared to that in the control (CON) and SBM groups. These results show that dietary supplementation with BFSBM can enhance the innate immunity of Pacific white shrimp and replace at least 30% of dietary fish meal.