中文摘要：

为讨论体长（L）对草鱼（Mylopharyngodon piceus）血液学指标的影响，采集体长范围为9.4－30.7 cm 的草鱼61尾，按体长分为5组，分别测定各组鱼体内红细胞的数量、长径、短径、面积和血红蛋白含量（Hb）。结果表明，草鱼红细胞的数量、长径、短径、面积和血红蛋白含量的平均值分别为2.33x10^9个·mL^-1、143.μ3、9.2μm、96.1μm^2和83.77mg·mL^-1草鱼的血红蛋白含量随体长增加而增加，二者之间的关系可以描述为方程Hb=1.47L＋55.1（n=61.r^2=0.307,P〈0.01），而红细胞数量、长径、短径和面积随体长增加均无显著变化；红细胞数量和长径均分别与血红蛋白 含量显著正相关（P〉0.05），红细胞短径与红细胞数量显著负相关＊。结果提示草鱼血液的载氧能力随体长增加 而增强，血红蛋白含量越高，红细胞数量越多，红细胞形状越趋于椭圆。

英文摘要：

Sixty-one grass carp（Mylopharyngodon piceus）（body length L ranges 9.4~30.7cm）were sampled and divided into 5 groups according to body length.Red blood cell number（RBC）,major axis,minor axis,area and serum hemoglobin content（Hb）were measured respectively.The results showed that the mean value of RBC was 2.33×109mL-1,major axis was 14.3μm,minor axis was 9.2μm,area was 96.1 μm2 and Hb was 83.77mgmL-1.It increased with the increasing L and the relationship between Hb and L can be described as Hb=1.47L＋55.1（n=61,r2=0.307,p0.01）.RBC,major axis,minor axis and area did not change with the increasing body length.Both RBC and major axis were positively correlated with Hb（p0.05）,while minor axis was negatively correlated with RBC（p0.05）.It indicates that the oxygen carrying capacity of blood of grass carp increases with the increasing body length.The number of the elliptical red blood cell tends to increase as Hb and RBC increases.