| 摘要: |
| 选取来源一致、规格整齐、体质健康、游动活泼的团头鲂750尾，随机分为5个处理，每处理3个重复，每重复50尾，分置于15个网箱中。各处理全价配合饲料中苜蓿草粉的添加量依次为：0（对照组），100（试验Ⅰ组），200（试验Ⅱ组），300（试验Ⅲ组）和400 g/kg（试验Ⅳ组），正试期40 d。测定团头鲂的生长、体型指标、肌肉营养成分及经济效益，研究不同水平苜蓿草粉对团头鲂生长性能及肉品质的影响。结果表明:（1）与对照组相比，试验Ⅰ组团头鲂尾均日增重提高，饵料系数降低，其中尾均日增重在试验后期，饵料系数无论是试验前期、后期还是整个试验期均呈现出显著性差异（P<0.05）；试验Ⅰ组和试验Ⅱ组团头鲂生长速度较对照组有一定提高,但差异不显著（P>0.05）。（2）试验Ⅰ组和试验Ⅱ组的团头鲂肥满度、体型均优于对照组，但差异不显著（P>0.05）。（3）试验Ⅰ组肌肉粗蛋白质含量高于对照组（P>0.05），各试验组粗脂肪含量有逐渐低于对照组的趋势，其中试验Ⅲ、Ⅳ组显著低于对照（P<0.05），说明适量添加苜蓿草粉有助于提高鱼肉品质。（4）苜蓿草粉添加量为100 g/kg的经济效益较对照组显著提高（P<0.05）。 |
| 关键词: 苜蓿草粉 团头鲂 生长性能 饵料系数 肉品质 |
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| 基金项目:河南省重点科技攻关项目（0223013600） |
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| Study on effect of alfalfa meal on growth performance and qulity of fish of bluntnose black bream (Megalobrama amblycepnala) |
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| Abstract: |
| An experiment was conducted using 750 Megalobrama amblycepnala to study the effect of alfalfa meal on production performance and qulity of fish.They were randomly divided into five treatments according to a random factorial arrangement,and each treatment represented by three replicates of 50 carps each.Carps were fed diet with 0,100,200,300 and 400 g/kg alfalfa meal during the phrase of 40 days.The results showed that（1）100 g/kg alfalfa meal in diet were superior in average individual daily weight gain and feed conversion ratio than that of no meal treatment（P<0.05）,but average individual daily weight gain,relative growth rate and feed conversion rate of bluntnose black breams fed alfalfa meal at 300 g/kg and 400 g/kg in diet significantly decreased（P<0.05）.Relative growth rate also showed that 100 g/kg alfalfa meal had more active effect on production performance than that of no meal treatment,although between the two groups showed no significant differences（P>0.05）.Bluntnose black breams added 200 g/kg alfalfa meal were inferior to that of no meal treatment,but the two groups there were no significant differences too（P>0.05）.（2）The relative fatness and ratio of body length and height of group Ⅰ and Ⅱ were superior to that of no meal treatment,however,among three groups there were no significant differences（P>0.05）.（3）According to no meal treatment,crude protein content of muscle was improved in group I than control group,but no significant differences were shown（P>0.05）.EE was significantly decreased when the amount of alfalfa meal was increased（P<0.05）,especially group Ⅲ and Ⅳ.It showed that alfalfa meal can improve the qulity of fish body of carps.（4）Economic profit of carps fed diets with 100 g/kg alfalfa meal was best.So it is recommended that 100 g/kg is suitable additive amount of alfalfa meal in diet of bluntnose black breams. |
| Key words: alfalfa meal bluntnose black bream growth performance feed conversion rate quality of fish |
