草鱼对淀粉饲料的消化吸收和利用

Studies on Digestibility and Utilization of Starch Diets in Grass Carp Ctenopharyngodon idellus(Cet V)

观察了平均体重７．０９ｇ的草鱼经淀粉含量不同的饲料喂养６０ｄ的生长和对饲料的利用情况．结果表明，草鱼的日相对增重率、饲料效率和蛋白质效率在饲料中淀粉含量增加时均下降，但组间差异不显著；饲饲料中纤维素含量升高显著降低草鱼对饲料干物质和淀粉的消化吸收。

Growth and utilization of diets were observed in grass carp, average body weight was 709 g,which were raised with diets of different levels of starch for 60 dResults showed that the daily relative growth rate, feed efficiency and protein efficiency ration all decrease while the level of dietary starch increased, but no significant differences were found in all treatments The increased level of dietary fiber reduced the digestibility of starch significantly, but no obvious effect on the digestibility of protein was found