Tubules of shrimp fed with CP30 and CP40 had the normal structure, though CP40 increased the number of R cells.Tubules of shrimps fed with CP20 had relatively fewer R cells and arranged incompactly.

• （4）饲料蛋白质含量明显影响了凡纳滨对虾肝胰腺的组织结构，投喂CP30和CP40饵料的对虾肝小体基膜完整，投喂CP40对虾的肝小体中还出现了大量的存储细胞（R细胞）；