摘要
本实验设计了营养相近、不同动植物蛋白比的四种膨化饲料(饲料1,1.5∶1;饲料2,3∶1;饲料3,5∶1;饲料4,7∶1),研究了动植物蛋白比对中华鳖稚鳖摄食、生长、饲料利用能力和营养组成的影响。饲料1组稚鳖的摄食率显著高于饲料2—4组。饲料1—4组稚鳖的特定生长率没有显著影响。饲料1组稚鳖的干物质和脂类消化率、饲料转化效率、蛋白贮积率和能量贮积率显著低于饲料2—4组。饲料1组稚鳖体脂肪含量显著低于饲料4组。稚鳖的上述指标在饲料2—4组间均无显著差异。结果表明,鳖膨化饲料动植物蛋白比对中华鳖稚鳖生长特性有明显的影响,适宜的动植物蛋白比为3∶1。
Effects of animal-plant protein ratio in extruded and expanded feed on feeding, growth rate, feed utilization and body composition of juvenile Chinese soft-shelled turtle （Pelodiscus sinensis ） were studied in this experiment. Four extruded and expanded feeds （dietsl--4） were formulated with different animal-plant protein ratios （ diet 1,1.50： 1 ; diet 2,2.95 ： 1 ; diet 3,4.92 ： 1 and diet 4,7.29：1 ）. Feeding rate of juvenile turtle fed diet 1 was significantly higher than those of the groups fed diet 2--4. There was no significant difference in specific growth rate among the groups fed diet 1--4. The apparent digestibility coefficients for dry mass and lipid of juvenile turtle fed diet 1 were both significantly lower than those of the groups fed diet 2--4. Feed conversion efficiency, protein retention efficiency and energy retention efficiency of juvenile turtle fed diet 1 were also significantly lower than those of the group fed diet 2--4. Body lipid content of juvenile turtle fed diet 1 was significantly lower than that of the group fed diet 4. There were no significant differences in the parameters described above among the groups of diet 2--4. Those results indicate that the growth performance of juvenile turtle is affected by the animal-plant protein ratio in extruded and expanded feed, and the optimum animal-plant protein ratio in extruded and expanded diets is around 3 ： 1.
出处
《水生生物学报》
CAS
CSCD
北大核心
2007年第4期570-575,共6页
Acta Hydrobiologica Sinica
基金
国家科技成果重点推广计划(2001EC000054)
河北省科技成果重点推广计划(01780413D)资助
关键词
中华鳖
膨化饲料
动植物蛋白比
生长特性
Pelodiscus sinensis
Extruded and expanded feed
Animal-plant protein ratio
Growth performance
