文章摘要
蒋小珍,张盛,黄凯,吴宏玉,蒋焕超.饲料糖水平对斑点叉尾鮰生长和生理机能的影响[J].广东农业科学,2013,40(7):111-118
饲料糖水平对斑点叉尾鮰生长和生理机能的影响
Effects of different dietary carbohydrate levels on growth and physiological functions of Channel catfish (Ictalurus punctatus)
  
DOI:
中文关键词: 斑点叉尾鮰  饲料糖  生长  肌肉营养成分  血液指标  酶活力
英文关键词: Channel catfish (Ictalurus punctatus)  carbohydrate  growth  body composition  serum biochemical indexes  enzyme activities
基金项目:国家科技支撑计划项目(2012BAD25B04);广西南宁市科技攻关项目(201102100G)
作者单位
蒋小珍,张盛,黄凯,吴宏玉,蒋焕超 广西大学动物科学技术学院广西水产引育种中心 
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中文摘要:
      为了研究饲料不同糖水平对斑点叉尾鮰幼鱼生长和生理机能的影响,配制投喂6 个糖水平(0、8%、16%、24%、32%和40%)的等蛋白、等脂肪试验饲料,经过90 d 试验期后发现:(1)随着饲料糖水平的升高,试验鱼的特定生长率、增重率、蛋白质效率呈现出先升高后下降的趋势,饵料系数则呈现出先下降后上升的趋势。(2)饲料糖水平对斑点叉尾鮰肌肉的粗蛋白、粗灰分、水分含量无影响,但对粗脂肪含量有影响,呈现一定的正相关性。(3)血浆葡萄糖浓度、胆固醇含量、甘油三酯含量、总胆汁酸含量等相关血液指标随饲料糖水平变化呈升高的趋势。(4)血浆谷丙转氨酶、谷草转氨酶的活性随摄入饲料糖水平升高而升高,而碱性磷酸酶含量随饲料糖水平的升高呈现先升高后降低的趋势。综合各项研究指标结果认为,在斑点叉尾鮰幼鱼饲料中添加16%~24%的糖含量较为合适。
英文摘要:
      The study was aimed at linking different dietary carbohydrate levels to the growth performance and physiological functions of Channel catfish. By feeding the matched pellet feed of different carbohydrate levels (0, 8%, 16%,24%, 32%, 40%) to Channel catfish for 3 months, we got the following conclusion: (1) Under the experimental conditions,with increasing dietary carbohydrate levels, specific growth ratio, weight gain ratio and protein efficiency ratio of test fish presented the trend of increasing firstly and then decreasing, but feed coefficient ratio presented the trend of decreasing firstly and then increasing. (2) The results of this study showed that, dietary carbohydrate levels had little impact on the crude protein, the crude ash and the moisture content of Channel catfish muscle, but it had a significant effect on the fat content of Channel catfish muscle, and showed a positive correlation with the fat content. (3) Serum glucose concentration,cholesterol content, triglyceride content and total bile acid content showed a positive correlation with dietary carbohydrate levels. (4) In this study, the activity of alanine aminotransaminase (ALT) and aspartate aminotransaminase (AST) showed a positive correlation with dietary carbohydrate levels, however, with increasing dietary carbohydrate levels, the content of alkaline phosphatase (ALP) presented the trend of increasing firstly and then decreasing. Based on the above results, it inferred that the dietary carbohydrate level of 16%~24% was best on Channel catfish juvenile under these experimental conditions.
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