文章摘要
饲料纤维源对大口黑鲈生长、血浆生化指标、肠道抗氧化能力和组织学的影响
Effects of dietary fiber sources on growth, plasma biochemical indexes, intestinal antioxidant capacity and histology of Largemouth Bass (Micropterus salmoides)
投稿时间:2019-05-30  修订日期:2019-10-02
DOI:
中文关键词: 大口黑鲈  纤维源  生长  血浆生化  抗氧化能力
英文关键词: M.salmoides  fiber sources  growth  plasma biochemical indexes  antioxidant capacity
基金项目:国家自然科学基金(31672659)
作者单位E-mail
石朝明 西南大学动物科技学院淡水渔类资源与生殖发育教育部重点实验室 swu_scming@163.com 
蒋余 西南大学动物科技学院淡水渔类资源与生殖发育教育部重点实验室  
钟云飞 西南大学动物科技学院淡水渔类资源与生殖发育教育部重点实验室  
陈拥军 西南大学动物科技学院淡水渔类资源与生殖发育教育部重点实验室  
罗莉 西南大学动物科技学院淡水渔类资源与生殖发育教育部重点实验室  
林仕梅 西南大学动物科技学院淡水渔类资源与生殖发育教育部重点实验室 linsm198@163.com 
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中文摘要:
      [目的]为比较评价纤维源在鱼饲料中的营养生理功能差异,[方法]在基础饲料中分别添加豆渣(SF)、发酵豆渣(FF)、羧甲基纤维素(CF)和微晶纤维素(MF)配制成相同纤维水平的等氮等脂实验饲料,饲喂大口黑鲈(均重:21.59±0.12 g)8周,从生长、血浆生化、肠道抗氧化以及组织学等指标比较不同纤维源对大口黑鲈的作用差异。[结果]结果显示,CF组大口黑鲈的终末体质量(FBW)、特定生长率(SGR)和蛋白质效率(PER)显著低于其它组,而饲料系数(FCR)、肝体比(HSI)和肝脂含量显著高于其它组。CF组血浆谷丙转氨酶(ALT)、谷草转氨酶(AST)和碱性磷酸酶(ALP)活性以及甘油三酯(TG)含量显著高于其它组。同时发现,CF组大口黑鲈肠道超氧化物歧化酶(SOD)和Na+, K+-ATP酶活性显著低于其它组,丙二醛(MDA)含量显著高于其它组,而一氧化氮(NO)含量以FF组最高。与其它组相比,CF组大口黑鲈肝脏外观发白,肝细胞空泡化严重,后肠绒毛机械性损伤加剧。[结论]研究表明,饲料不同纤维源会显著影响大口黑鲈的肝脏和肠道健康,进而影响其生长性能,而且应重新评估羧甲基纤维素作为水产饲料粘合剂的可行性。
英文摘要:
      In order to compare and evaluate the differences in nutritional and physiological functions of fiber sources in fish feed, compared the effects of dietary fiber sources on the growth, plasma biochemical, intestinal antioxidant capacity and histology of M.salmoides. Fish [initial weight of (21.59±0.12) g] were fed four isonitrogenous and isolipid experimental diets containing same fiber content soybean dregs fiber (SF), fermented soybean dregs fiber (FF), carboxymethyl cellulose (CF) and microcrystalline cellulose (MF) for 8 weeks. The results indicated that the CF group showed significantly lower final body weight (FBW), specific growth rate (SGR) and protein efficiency ratio (PER) compared with other groups, while feed conversion ratio (FCR), heparsomatic index (HSI) and liver lipid content was significantly higher than other groups. The activities of alanine amiotransferase (ALT), aspartate transaminase (AST) and alkaline phosphatase (ALP) and the content of triglyceride (TG) in plasma of CF group were significantly higher than other groups. At the same time, the activities of superoxide dismutase (SOD) and Na+, K+ -ATP enzyme of CF group were significantly lower than other groups, while the content of malondialdehyde (MDA) was significantly higher than other groups. The content of nitric oxide (NO) was highest in FF group. Compared with the other groups, the liver appearance become white and liver cells were vacuolated seriously and aggravation of mechanical damage of the hindgut villi in CF group. The results showed that dietary fiber source can significantly affect the liver and intestinal health and then affect growth performance of M.salmoides, and the feasibility of carboxymethyl cellulose as an adhesive should be re-evaluated.
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