不同脂肪源对鳡幼鱼生长、血清生化组成和肝脏的影响
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国家农业科技成果转化项目(2009GB2D100247)


Effect of dietary lipid sources on growth,blood biochemical indices and liver of juvenile yellowcheek carp (Elopichthys bambusa)
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    摘要:

    以鱼油为对照组(FO),分别以1/2猪油(PL)、1/2大豆油(SO)、1/2葵花籽油(SFO)、1/2棕榈油(PO)、1/2玉米油(CO)替代1/2鱼油作为脂肪源,配制6组等氮(49.43%±0.19%)等能((18.09±0.03) MJ/kg)的饲料,对鳡幼鱼(体长(6.89±0.20) cm,体质量(3.09±0.23) g)进行为期56 d的养殖试验,研究部分替代鱼油对鳡幼鱼生长、血清生化组成以及肝脏的影响。结果表明:终末体质量和增重率均以葵花籽油替代组最大,其次是对照组和大豆油替代组;蛋白质效率、饵料系数各组之间无显著差异;玉米油替代组和猪油替代组的谷草转氨酶活性显著高于对照组,玉米油替代组的谷丙转氨酶活性显著高于对照组;猪油替代组幼鱼肝脏细胞中脂滴较其他组明显;在本研究的替代比例下,综合对鳡幼鱼生长、血清生化指标和肝脏的影响,认为葵花籽油、棕榈油、豆油可以作为脂肪源替代鱼油。

    Abstract:

    An 8-week feeding trial was conducted to investigate the effects of different lipid sources on the growth,serum biochemical indices and liver of juvenile yellowcheek carp (Elopichthys bambusa).Six iso-nitrogenous (49.43%±0.19%) and iso-energetic (18.09±0.03 MJ/kg) experimental diets were formulated,using 100% fish oil (3.80 g/100 g diet) as the control diet.Half of the fish oil of the other diets were replaced with different lipids:corn oil (CO),sunflower seed oil (SFO),palm oil (PO),soybean oil (SO) and pork lard (PL),respectively.Juvenile yellowcheek carp,with initial body-length of 6.89±0.20 cm and initial body-weight of 3.09±0.23 g,were cultured in 18 cylindrical tanks (340 L in volume,containing 280 L water) with 15 individuals in each tank.Water was aerated and circulated with a daily exchange rate of 15%-20%.The juveniles were fed twice (08:00 am and 16:00 pm) daily.During feeding trial,water temperature was fluctuated around 25-28℃ and pH value was 6.5-7.5.The final body-weight and weight growth rate of the juveniles showed a order of SFO> FO> SO>PO>PL>CO,with no significant difference among SFO,FO,SO and PO,but significantly lower in groups PL and CO.No significant difference of protein efficiency ratio(PER) and feed conversion rate were observed among groups.Alanine transaminase (ALT) from group CO was significantly higher than the control group; whereas aspartate transaminease(AST)was highest in groups CO and PL.Fat droplets in liver cells from group PL was obvious compared to other groups.Results indicated thatsunflower seed oil,palm oil and soybean oil are supposed to be suitable dietary lipid sources for juvenile yellowcheek carp.

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陈海燕,朱邦科,樊启学,胡培培,宋林,彭聪,宗克金,张云龙.不同脂肪源对鳡幼鱼生长、血清生化组成和肝脏的影响[J].华中农业大学学报,2013,32(2):116-122

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