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首页> 美国卫生研究院文献>other >Replacement of fish oil with palm oil: Effects on growth performance innate immune response antioxidant capacity and disease resistance in Nile tilapia (Oreochromis niloticus)
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Replacement of fish oil with palm oil: Effects on growth performance innate immune response antioxidant capacity and disease resistance in Nile tilapia (Oreochromis niloticus)

机译：用棕榈油代替鱼油：对尼罗罗非鱼（Oreochromis niloticus）生长性能先天免疫应答抗氧化能力和抗病性的影响

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This study was conducted to investigate the effects of replacing dietary fish oil (FO) with palm oil (PO) in juvenile Nile tilapia, Oreochromis niloticus (9.34± 0.02g initial weight) with emphasis on growth performance, digestive enzyme activities as well as serum biochemical parameters. Also, lysozyme activity (LYZ), respiratory burst (RB), superoxide dismutase (SOD), catalase (CAT) and resistance to Streptococcus iniae were investigated. Fish were stocked in 15 rectangular fiber glass tanks (150× 60× 40 cm) at 40 fish per tank with water maintained at 210 litres. Fish were fed five isonitrogenous (33% crude protein) and isolipidic (10% lipid) diets with PO included at 0% (0% PO), 25% (25% PO), 50% (50%PO), 75% (75% PO) and 100% (100% PO) for 8 weeks. The findings demonstrated that growth, and feed utilization was not compromised when PO was used in place of FO either partially or totally. Except for protease activity which was not significantly altered, lipase and amylase activities were significantly altered when FO was replaced with PO. There were no significant differences among treatments for CAT, SOD and LYZ. Serum malondialdehyde (MDA) in fish fed 100% PO was significantly lower than all other groups whiles total antioxidant capacity (TAC) of fish fed 0% PO was significantly higher than all other groups. Fish fed 0% PO, 25% PO and 50% PO had glutathione reductase (GR) significantly higher than fish fed 75% PO and 100% PO. RB in fish fed 0% PO were significantly lower than fish fed 75% PO and 100% PO. Also, fish fed 0% PO had significantly lower total protein (TP) compared with groups fed 50% PO and 75% PO. Fish fed diets with PO had similar resistance ability to Streptococcus iniae as those fed diets with FO. However, the liver function was likely to be compromised due to the increase in aspartate amino transferase (AST) and alkaline phosphatas (ALP) along increasing PO inclusion levels. AST, total protein, triacylglycerol (TAG) and low-density lipoprotein cholesterol (LDL-C) were significantly higher (p<0.05) in groups fed higher levels of PO. This study therefore concludes that feeding tilapia fingerlings with diets containing PO affects antioxidant and innate immune parameters negatively due to the reduction in LYS, TAC, GR, MDA, CAT, SOD and GSHpx.
机译：这项研究旨在研究用棕榈油（PO）替代鱼油（FO）对尼罗罗非鱼（Oreochromis niloticus）（初始重量9.34±0.02g）的影响，重点是生长性能，消化酶活性以及血清生化参数。此外，还研究了溶菌酶活性（LYZ），呼吸爆发（RB），超氧化物歧化酶（SOD），过氧化氢酶（CAT）和对猪链球菌的抗性。将鱼放进15个矩形玻璃纤维水箱（150×60×40厘米）中，每个水箱40条鱼，水保持在210升。给鱼喂五种等氮（粗蛋白为33％）和等脂（10％脂质）日粮，其中PO分别为0％（0％PO），25％（25％PO），50％（50％PO），75％（ 75％PO）和100％（100％PO），持续8周。研究结果表明，当部分或全部使用PO代替FO时，生长和饲料利用率没有受到损害。当FO替换为PO时，除了蛋白酶活性没有显着改变外，脂肪酶和淀粉酶活性也发生了显着改变。 CAT，SOD和LYZ处理之间无显着差异。饲喂100％PO的鱼的血清丙二醛（MDA）显着低于所有其他组，饲喂0％PO的鱼的总抗氧化能力（TAC）显着高于所有其他组。饲喂0％PO，25％PO和50％PO的鱼的谷胱甘肽还原酶（GR）明显高于饲喂75％PO和100％PO的鱼。摄食0％PO的鱼的RB显着低于摄食75％PO和100％PO的鱼。此外，与饲喂50％PO和75％PO的组相比，饲喂0％PO的鱼的总蛋白（TP）明显降低。饲喂PO的鱼饲料对鱼类链球菌的抵抗能力与饲喂FO的鱼相似。但是，由于天冬氨酸转氨酶（AST）和碱性磷酸酶（ALP）随PO含量增加而增加，肝功能可能受到损害。摄食高水平PO的组的AST，总蛋白，三酰甘油（TAG）和低密度脂蛋白胆固醇（LDL-C）显着更高（p <0.05）。因此，这项研究得出的结论是，由于LYS，TAC，GR，MDA，CAT，SOD和GSHpx的减少，用含PO的饮食喂养罗非鱼鱼种会对抗氧化剂和先天免疫参数产生负面影响。

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