Department of Biotechnology, Bharath College of Science and Management, Thanjavur 613 005, Tamil Nadu, India.
Zoology Department, College of Science, King Saud University, PO Box 2455, Riyadh 11451, Saudi Arabia.
Fish Shellfish Immunol. 2018 Apr;75:27-31. doi: 10.1016/j.fsi.2018.01.049. Epub 2018 Jan 31.
The effect of Sodium Bentonite (SB) enriched diet on growth performance, innate immune response, and disease resistance in stinging catfish, Heteropneustes fossilis against Aeromonas hydrophila is reported. The infected fish fed with 5% SB had the maximum weight gain diet (PWG %) and specific growth rate (SGR %) were 26% and 29% when compared to 14% and 17% with 10% diet. Similarly the phagocytic activity increased significantly when infected fish were fed with 5% or 10% SB diets during the experimental period; the complement, respiratory burst and lysozyme activities were also significantly enhanced on weeks 2 and 4. The lower cumulative mortality (10% and 15%) was observed when the infected fish were fed with 5% and 10% SB diets for 30 days. The results suggest that the infected H. fossilis after administration of 5% and 10% SB enriched diets for 30 days had significantly improved growth performance, innate immunity, and disease resistance against A. hydrophilla. Hence, sodium bentonite can be used as a feed additive to stimulate immunity and for disease resistance in the effective production of economically valuable freshwater catfish, H. fossilis.
报道了富钠膨润土（SB）饮食对杂交鲇（Heteropneustes fossilis）生长性能、先天免疫反应和对嗜水气单胞菌（Aeromonas hydrophila）抵抗力的影响。与 10%饮食组的 14%和 17%相比，感染鱼用 5% SB 喂养时的最大增重饲料（PWG%）和特定生长率（SGR%）分别为 26%和 29%。同样，在实验期间，当感染鱼用 5%或 10% SB 饮食喂养时，吞噬活性显著增加；补体、呼吸爆发和溶菌酶活性在第 2 和第 4 周也显著增强。当感染鱼用 5%和 10% SB 饮食喂养 30 天时，累积死亡率（10%和 15%）较低。结果表明，感染的 H. fossilis 在服用 5%和 10% SB 强化饮食 30 天后，生长性能、先天免疫和对 A. hydrophilla 的抵抗力显著提高。因此，钠膨润土可用作饲料添加剂，刺激免疫，提高经济价值淡水鲇（H. fossilis）的抗病能力。
