生小麦和膨化小麦在草鱼上饲喂效果的比较研究

A Comparative Study of Feeding Value of Raw and Extruded Wheat in Grass Carp(Ctenopharyngodon idellus)

本试验旨在比较研究生小麦和膨化小麦在草鱼上的饲喂效果。选用初始均重为27.8 g的草鱼180尾,随机分为4组,每组3个重复,每个重复放鱼15尾。4个试验组分别饲喂含16%生小麦、16%膨化小麦、32%生小麦、32%膨化小麦的试验饲料,试验期为61 d。结果表明:16%和32%的添加水平下,膨化小麦组的特定生长率比生小麦组分别降低了5.96%(P>0.05)和3.42%(P>0.05);成活率分别降低了2.32%(P>0.05)和6.97%(P>0.05)。在同一添加水平下,与生小麦组相比,膨化小麦组草鱼蛋白质沉积率以及全鱼、肌肉的粗蛋白质含量降低(P>0.05),脂肪沉积率、腹腔脂肪指数、血清高密度脂蛋白胆固醇含量以及全鱼、肌肉和肝胰脏的粗脂肪含量提高(P>0.05)。由此得出,草鱼饲料中生小麦的应用效果优于膨化小麦。

This experiment was conducted to compare the feeding value of raw and extruded wheat in grass carp.One hundred and eighty grass carp with average body weight of 27.8 g were randomly divided into four groups with three replicates and fifteen grass carp in each replicate.The four experimental groups were fed with experimental diets which contained 16% raw wheat,16% extruded wheat,32% raw wheat and 32% extruded wheat,respectively.The experiment lasted for 61 days.The results showed as follows： under the supplemental levels of 16% and 32%,the specific growth rate of extruded wheat group was deceased by 5.96% and 3.42%,and the survival rate was deceased by 2.32% and 6.97%,respectively,compared with the raw wheat group（P0.05）.Under the same supplemental level,compared with the raw wheat group,protein deposit rate and crude protein content of whole fish and muscle in the extruded wheat group were all decreased（P0.05）;lipid deposit rate,celiac fat index,serum high density lipoprotein cholesterol content and crude lipid content of whole fish,muscle and hepatopancreas in the extruded wheat group were all increased（P0.05）.In conclusion,the application effects of raw wheat are better than those of extruded wheat in grass carp.