不同脂肪源对异育银鲫形体与血液生化指标的影响

在基础料中分别添加4%的鱼油、豆油、猪油、花生油和混合油(鱼油、豆油、猪油质量比为3∶4∶3),制成5种等氮试验饲料,饲喂初始体质量为(6.04±0.05) g 的异育银鲫60 d,以考察5种脂肪源对异育银鲫形体指标和血清生化指标的影响.结果表明:猪油组的肝体指数与脏体指数均最高,猪油组肝体指数显著高于鱼油组,猪油组脏体指数显著高于混合油组(P<0.05);各试验组鱼体肥满度差异不显著(P>0.05);各试验组总蛋白(TP)含量和白蛋白(ALB)含量的变化趋势相似,均为鱼油组显著高于猪油组(P<0.05),其余各组之间差异不显著(P>0.05);各试验组谷草转氨酶(AST)活性和谷丙转氨酶(ALT)活性的变化趋势相似,均为猪油组显著高于鱼油组(P<0.05),其余各试验组之间差异不显著(P>0.05);鱼油组甘油三酯(TG)含量最低,豆油组其次,均显著低于混合油组(P<0.05);鱼油组高密度脂蛋白(HDL–C)含量最高,花生油组其次,均显著高于猪油组(P<0.05);各试验组球蛋白(GLB)、胆固醇(CHO)、葡萄糖(BGLU)、低密度脂蛋白(LDL–C)、皮质醇、胰高血糖素(Glu)和胰岛素(Ins)的含量和碱性磷酸酶(AKP)活性差异不显著(P>0.05).在本试验5种脂肪源中,鱼油对异育银鲫形体与血液生化指标的作用效果最好,豆油、花生油和混合油其次,猪油最差

Effects of dietary lipid sources on the morphology and biochemical index of Carassius auratus Gibelio

To investigate the effect of dietary lipid on the body and blood biochemical parameters of Carassius auratus Gibelio,five diets containing 4% of either fish oil,soybean oil,lard,peanut oil or mixed oil(fish oil∶soybean oil∶lard=3∶4∶3) were fed to five groups of fish(average initial weight(6.04±0.05) g) respectively for 60 d.The results showed that the hepatosomatic index(HSI) and visceral-somatic index in lard group were the highest with HSI significantly higher than that in fish oil group and with visceral-somatic index significantly higher than that in mixed oil group(P<0.05).There was on significant difference in condition factor among different groups(P>0.05).The contents of total protein(TP) and albumin(ALB) shared the same change pattern with those significantly higher in fish oil group than in lard group(P<0.05) and with no significant difference among other groups(P>0.05).The activity change of glutamic oxaloacetic transaminase(AST) was similar to glutamic pyruvic transaminase(ALT),which were both significantly higher in lard group than in fish oil group(P<0.05) and no significant difference was observed among other groups(P>0.05).The concentration of triglyceride(TG) in fish oil group was the lowest followed by that in the soybean oil group,which were both significantly lower than that in mixed oil group(P<0.05).The concentration of the high density lipoprotein-cholesterol(HDL-C) in fish oil group was the highest followed by peanut oil,which were both significantly higher than that in lard group(P<0.05).As for GLB,total cholesterol(TC),blood glucose(BGLU),low density lipoprotein-cholesterol(LDL-C),alkaline phosphatase(AKP),cortisol,insulin(Ins) and glucagons(Glu),there was no significant change among five groups(P>0.05).These results explicated that the fish oil was the best suitable lipid source followed by soybean oil,peanut oil and mixed oil,while lard was the least suitable.