A 12‐week growth trial was conducted to evaluate the effect of low fishmeal and phytase replacing inorganic phosphorus on juvenile hybrid sturgeon (Acipenser baeri Brandt ♀ × A. schrenckii Brandt ♂). Four experimental diets were designed as FM100p, FM100, FM250p and FM250, which represented 10% and 25% fishmeal with or without phytase, respectively. The results showed that although growth parameters had no significant difference in all treatments, low fishmeal obviously decreased the culture cost of hybrid sturgeon. Lipid content of body composition was obviously increased in low fishmeal treatments (p < .05). The interaction of low fishmeal and phytase significantly enhanced apparent digestibility coefficients of crude protein (p < .05). Two‐way ANOVA analysis showed that input and output of phosphorus were significantly affected by fishmeal level, phytase and interaction of both factors (p < .05). For the immunological and hepatic function parameters, fishmeal level and phytase had significant effects on the activities of lysozyme, myeloperoxidase, malondialdehyde, alanine aminotransferase, lactate dehydrogenase and alkaline phosphatase (p < .05). The present study potentially justifies that a diet containing 10% fishmeal can be used for hybrid sturgeon. Moreover, replacement of monocalcium phosphate by phytase not only has no adverse effect on the growth of hybrid sturgeon, but also reduces phosphorus emission and protects aquaculture environment.

中文翻译：

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不同鱼粉水平日粮添加或不添加植酸酶对杂交鲟幼鱼（Acipenser baeri Brandt ♀ × A. schrenckii Brandt ♂）生长性能、体成分、消化率、免疫学和生化参数的影响

进行了为期 12 周的生长试验，以评估低鱼粉和植酸酶替代无机磷对杂交鲟幼鱼（Acipenser baeri Brandt ♀ × A. schrenckii Brandt ♂）的影响。四种实验日粮分别设计为 FM100p、FM100、FM250p 和 FM250，分别代表 10% 和 25% 鱼粉加或不加植酸酶。结果表明，虽然各处理的生长参数无显着差异，但低鱼粉明显降低了杂交鲟的养殖成本。低鱼粉处理中身体成分的脂质含量明显增加（p < .05）。低鱼粉和植酸酶的相互作用显着提高了粗蛋白的表观消化率（p < .05）。双向方差分析表明，磷的输入和输出受鱼粉水平、植酸酶和这两个因素的相互作用的显着影响（p < .05）。对于免疫学和肝功能参数，鱼粉水平和植酸酶对溶菌酶、髓过氧化物酶、丙二醛、丙氨酸氨基转移酶、乳酸脱氢酶和碱性磷酸酶的活性有显着影响（p < .05）。本研究可能证明含有 10% 鱼粉的饮食可用于杂交鲟鱼。此外，植酸酶替代磷酸一钙不仅对杂交鲟的生长没有不利影响，而且减少了磷的排放，保护了养殖环境。鱼粉水平和植酸酶对溶菌酶、髓过氧化物酶、丙二醛、丙氨酸氨基转移酶、乳酸脱氢酶和碱性磷酸酶的活性有显着影响（p < .05）。本研究可能证明含有 10% 鱼粉的饮食可用于杂交鲟鱼。此外，植酸酶替代磷酸一钙不仅对杂交鲟的生长没有不利影响，而且减少了磷的排放，保护了养殖环境。鱼粉水平和植酸酶对溶菌酶、髓过氧化物酶、丙二醛、丙氨酸氨基转移酶、乳酸脱氢酶和碱性磷酸酶的活性有显着影响（p < .05）。本研究可能证明含有 10% 鱼粉的饮食可用于杂交鲟鱼。此外，植酸酶替代磷酸一钙不仅对杂交鲟的生长没有不利影响，而且减少了磷的排放，保护了养殖环境。