饵料类型和投喂频率对鳡幼鱼生长及肌肉成分的影响

研究了不同养殖模式F1(投喂1次饵料鱼/d)、F2(投喂2次饵料鱼/d)、A1(投喂1次人工配合饲料/d)、A2(投喂2次人工配合饲料/d)对鳡(Elopichthys bambusa)幼鱼生长及肌肉成分的影响,实验持续56 d.结果显示:各组最终体重为A2 ＞F2 ＞A1 ＞F1.饵料相同时,2次/d组生长速度、肌肉...

Effects of different diets and feeding frequencies on the growth and muscle composition in Elopichthys bambusa juveniles

A 56 d feeding experiment was conducted to study the effects of four culture models(F1:feeding forage fish once every day;F2:feeding forage fish twice every day;A1:feeding artificial diets once every day;A2:feeding artificial diets twice every day) on growth performance and body composition of juvenile Elopichthys bambusa.The results showed that the group A2 gained the maximal growth rate,and the order of growth rate was:A2>F2>A1>F1.Under the same diets,the growth performances and the content of crude protein and fat increased significantly(P<0.01) with the increasing of feeding frequencies,but the feed coefficient(FC) decreased significantly(P<0.05).With the same feeding frequency,fish feeding with artificial diets gained higher growth performances,lower FC and the content of crude fat than those of fish feeding with the forage fish(P<0.01).Diets and feeding frequency were interated with FC,crude protein and crude fat(P<0.05),but not with the other performances(P>0.05).It was concluded from the experiment that the optimum choice was the feeding model A2.