鱼类对乙醇梭菌蛋白中营养物质的表观消化率

Nutrient Apparent Digestibility of Clostridium autoethanogenum Protein for Fish

试验旨在评价黑鲷(Acanthopagrus schlegelii)和建鲤(Cyprinus carpio var. Jian)对乙醇梭菌蛋白中干物质、粗蛋白、氨基酸、粗脂肪和总磷的表观消化率。试验饲料由70%的基础饲料和30%的乙醇梭菌蛋白组成,并添加0.1%的三氧化二钇(Y_(2)O_(3))作为指示剂。选取平均体重为(6.03±0.09) g的黑鲷360尾,分为两组,每组6个重复,每个重复30尾,两组分别饲喂基础饲料和试验饲料;选取平均体重为(45.00±0.50) g的建鲤180尾,分为两组,每组3个重复,每个重复30尾,两组分别饲喂基础饲料和试验饲料。结果表明,黑鲷对乙醇梭菌蛋白中干物质、粗蛋白、氨基酸、粗脂肪和总磷的表观消化率分为99.89%、100%、95.16%~100%、88.60%和100%;建鲤对乙醇梭菌蛋白中干物质、粗蛋白、氨基酸、粗脂肪和总磷的表观消化率分为78.68%、95.00%、96.12%~100%、52.26%和100%。总体而言,乙醇梭菌蛋白的粗蛋白和氨基酸的表观消化率均处在较高水平。由此可知,对黑鲷和建鲤而言,乙醇梭菌蛋白是较好的单细胞蛋白原料。

The apparent digestibility of dry matter(DM),crude protein(CP),amino acid(AA),crude lipid(CL)and total phosphorus(TP)of CAP was determined for black sea bream(Acanthopagrus schlegelii)and Jian carp(Cyprinus carpio var.Jian)in this study.The test feed consisted of 70%basal feed and 30%CAP containing 0.1%yttrium trioxide as an inert marker.Three hundred and sixty black sea bream with an average body weight of(6.03±0.09)g were divided into 2 groups with 6 replicates per group and 30 fish per replicate.One control group was fed a basal diet,while the experiment group was fed an experimental diet.One hundred and eighty Jian carp with an average body weight of(45.00±0.50)g were divided into 2 groups with 3 replicates per group and 30 fish per replicate.One control group was fed a basal diet,while the experiment group was fed an experimental diet.The results showed as follows:the apparent digestibility of DM,CP,AA,CL and TP of CAP for black sea bream were 99.89%,100%,95.16%-100%,88.60%and 100%.The apparent digestibility of DM,CP,AA,CL and TP of CAP for Jian carp were 78.68%,95.00%,96.12%-100%,52.26%and 100%.On the whole,apparent digestibility of crude protein and amino acids of CAP was at a high level.The results of this study indicate that CAP is a good protein source for black sea bream and Jian carp.