紫花苜蓿草粉对鲤鱼生长性能及鱼体品质的影响

选用750尾规格整齐、体格健壮的黄河鲤鱼,随机分为5组。各组饲粮的苜蓿草粉添加水平分别为0(对照组),50(试验Ⅰ组),100(试验Ⅱ组),150(试验Ⅲ组)和200 g/kg(试验Ⅳ组),研究鲤鱼全价配合饲粮中添加不同水平苜蓿草粉对鲤鱼生长性能、鱼体品质的影响。结果表明,(1)试验Ⅰ组的平均日增重、相对生长率、增重率、饵料系数均优于对照组,尽管差异不显著(P>0.05),但也说明添加50 g/kg苜蓿草粉对鲤鱼生产性能有积极作用;试验Ⅱ组的各项指标稍低于对照组(P<0.05),但显著低于50 g/kg草粉组(P<0.05);试验Ⅲ组、Ⅳ组均显著低于对照组(P<0.05)。(2)除试验Ⅳ组外,其余试验组的肌肉粗蛋白质含量均显著高于对照组(P<0.05);除第Ⅰ组外,其余3组的粗脂肪含量均显著低于对照组(P<0.05),说明添加苜蓿草粉有助于提高鱼肉品质。(3)经济效益分析表明,添加50 g/kg苜蓿草粉(试验Ⅰ组)的经济效益最好。

Effect of different level alfalfa meal on growth performance and qulity of fish body of Cyrinus carpio

An experiment was conducted using 750 Cyrinus carpio to study the effect of alfalfa meal on production performance and qulity of fish body.Carps were randomly divided into five treatments according to a random factorial arrangement.Carps were fed diet with 0,50,100,150 and 200 g/kg alfalfa meal during the phrase of 39 days.The results showed that (1)Carps added 50 g/kg alfalfa meal were superior in average individual daily weight gain,weight gain rate,relative growth rate than those of no meal treatment(P>0.05).Although the two groups had no significant differences,it also showed that 50 g/kg alfalfa meal had an active effect on production performance.Carps added 100 g/kg alfalfa meal were inferior than those of no meal treatment,but the two groups had no significant differences too(P>0.05).But average individual daily weight gain,weight gain rate,relative growth rate and feed conversion rate of carps fed alfalfa meal at 150 g/kg and 200 g/kg in diet significantly decreased(P<0.05).(2) Crude protein content of muscle was significantly improved except group 4 and EE was significantly decreased when amount of alfalfa meal was increased (P<0.05).It showed that alfalfa meal could improve the qulity of fish body of carps.(3) Economic profit of carps fed diets with 50 g/kg alfalfa meal was best.