研究枇杷多糖对草金鱼 Carassius auratus 免疫功能的影响,为水产动物病害的防治及充分利用枇杷资源提供依据。以草金鱼为试材,通过注射的方式免疫草金鱼,研究枇杷多糖对草金鱼超氧化物歧化酶、溶菌酶、酚氧化酶、白细胞吞噬率的影响,结果表明：注射枇杷多糖质量浓度为1.0 mg·mL-1,免疫21 h 时草金鱼血液 SOD、溶菌酶活性均达到最大,分别为37.8 U 和128 U；注射枇杷多糖质量浓度1.5 mg·mL-1,免疫28 h时,草金鱼血清酚氧化酶活力和白细胞吞噬率均达最大,分别为4.1 U、55.68%,说明枇杷多糖可以提高草金鱼的免疫功能。%The study on the effect of loquat polysaccharides on the immunity of Carassius auratus could provide some evidences for controlling the disease of aquatic animal and making full use of resources of loquat.Therefore, taking the Carassius auratus as testing material,the Carassius auratus was immune by being injected with loquat polysaccharides,in order to study the effect of loquat polysaccharides on superoxide dismutase, lysozyme, phenoloxidase and phagocytic rate.The results showed that:when the Carassius auratus was injected with1.0 mg· mL-1 loquat polysaccharide for 21 hours,the blood SOD and lysozyme reached the highest,which were respectively 37.8 U and 128 U;when the Carassius auratus was injected with 5 mg·mL-1 loquat polysaccharide for 28 hours, the blood phenoloxidase activity and phagocytic rates reached the peak value,which were respectively 4.1 U and 55.68%,showing that the loquat polysaccharides could enhance the immune function of Carassius auratus .
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