饲料科学与技术 Feed science and technology

凹土纳米氧化锌对断奶仔猪血清、肝脏和肠道黏膜抗氧化指标的影响

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  • 扬州大学动物科学与技术学院, 扬州 225009
毛俊舟(1993-),男,安徽六安人,硕士研究生,从事单胃动物营养研究。E-mail:781446817@qq.com

收稿日期: 2018-09-12

  网络出版日期: 2019-04-16

基金资助

江苏省基础研究计划(自然科学基金)-青年基金项目(BK20170490);扬州市产学研合作专项(市校合作)(YZ2016257);扬州大学镇江高新技术研究院开放课题

Effects of Attapulgite Nano Zinc Oxide on Antioxidant Indexes in Serum, Liver and Intestinal Mucosa of Weaned Piglets

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  • College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China

Received date: 2018-09-12

  Online published: 2019-04-16

摘要

本试验旨在研究凹土纳米氧化锌对断奶仔猪血清、肝脏和肠道黏膜抗氧化指标的影响。选取210头21日龄体重(6.30±0.51)kg的健康杜×长×大断奶仔猪,随机分为7个组,每组6个重复,每个重复5头猪。各组分别为对照组(CON组,基础饲粮)、抗生素组(ANT组,基础饲粮+抗生素)、氧化锌组(ZO组,基础饲粮+3 000 mg/kg氧化锌)、纳米氧化锌组(NZO组,基础饲粮+800 mg/kg纳米氧化锌)、低剂量凹土纳米氧化锌组(LANZ组,基础饲粮+700 mg/kg凹土纳米氧化锌)、中剂量凹土纳米氧化锌组(MANZ组,基础饲粮+1 000 mg/kg凹土纳米氧化锌)和高剂量凹土纳米氧化锌组(HANZ组,基础饲粮+1 300 mg/kg凹土纳米氧化锌)。预试期3 d,正试期9 d。结果表明:1)ZO和LANZ组的血清过氧化氢酶(CAT)活性显著高于CON组(P<0.05);ANT、ZO、LANZ、MANZ和HANZ组的血清总抗氧化能力(T-AOC)显著高于CON组(P<0.05),且ANT组的血清T-AOC显著高于其他各组(P<0.05)。2)LANZ组的肝脏CAT活性显著高于其他各组(P<0.05)。3)ZO、NZO、LANZ、MANZ和HANZ组的空肠黏膜超氧化物歧化酶(SOD)活性显著高于ANT组(P<0.05)。ZO、LANZ组的空肠黏膜CAT活性显著高于CON和ANT组(P<0.05)。ANT、ZO、NZO、LANZ和HANZ组的空肠黏膜T-AOC显著高于CON和MANZ组(P<0.05)。4)HANZ组的回肠黏膜CAT活性显著低于CON组(P<0.05),ZO、NZO组的回肠黏膜谷胱甘肽过氧化物酶(GSH-Px)活性显著低于CON、ANT和LANZ组(P<0.05)。由此可见,断奶仔猪饲粮中添加适量凹土纳米氧化锌能够提高血清、肝脏和肠道中抗氧化酶的活性,增强仔猪的抗氧化性能。本试验中,饲粮中凹土纳米氧化锌适宜添加量为700 mg/kg。

本文引用格式

毛俊舟, 董丽, 彭程, 张永胜, 喻礼怀 . 凹土纳米氧化锌对断奶仔猪血清、肝脏和肠道黏膜抗氧化指标的影响[J]. 动物营养学报, 2019 , 31(4) : 1789 -1796 . DOI: 10.3969/j.issn.1006-267x.2019.04.037

Abstract

This experiment was conducted to explore the effects of attapulgite nano zinc oxide on antioxidant indexes in serum, liver and intestinal mucosa of weaned piglets. A total of 210 healthy 21-day-old piglets with a similar body weight of (6.30±0.51) kg were randomly allocated into 7 groups with 6 replicates per group and 5 piglets per replicate. The 7 groups were control group (CON group, basal diet), antibiotic group (ANT group, basal diet+antibiotic), zinc oxide group (ZO group, basal diet+3 000 mg/kg zinc oxide), nano zinc oxide group (NZO group, basal diet+800 mg/kg nano zinc oxide), low dose attapulgite nano zinc oxide group (LANZ group, basal diet+700 mg/kg attapulgite nano zinc oxide), middle dose attapulgite nano zinc oxide group (MANZ group, basal diet+1 000 mg/kg attapulgite nano zinc oxide) and high dose attapulgite nano zinc oxide group (HANZ group, basal diet+1 300 mg/kg attapulgite nano zinc oxide). The pre-experimental period lasted for 3 days, and the experimental period lasted for 9 days. The results showed as follows:1) the serum catalase (CAT) activity of ZO and LANZ groups was significantly higher than that of CON group (P<0.05); the serum total antioxidant capacity (T-AOC) of ANT, ZO, LANZ, MANZ and HANZ groups was significantly higher than that of CON group (P<0.05), and the serum T-AOC of ANT group was significantly higher than that of other groups (P<0.05). 2) The liver CAT activity of LANZ group was significantly higher than that of other groups (P<0.05). 3) The jejunum mucosa superoxide dismutase (SOD) activity of ZO, NZO, LANZ, MANZ and HANZ groups was significantly higher than that of ANT group (P<0.05). The jejunum mucosa CAT activity of ZO and LANZ groups was significantly higher than that of CON and ANT groups (P<0.05). The jejunum mucosa T-AOC of ANT, ZO, NZO, LANZ and HANZ groups was significantly higher than that of CON and MANZ groups (P<0.05). 4) The ileal mucosa CAT activity of HANZ group was significantly lower than that of CON group (P<0.05), the ileal mucosa glutathione peroxidase (GSH-Px) activity of ZO and NZO groups was significantly lower than that of CON, ANT and LANZ groups (P<0.05). The results indicat that the appropriate supplementation of attapulgite nano zinc oxide can improve the activity of antioxidant enzymes in serum, liver and intestine, and enhance the antioxidant performance of piglets. The suitable supplementation of attapulgite nano zinc oxide is 700 mg/kg in this experiment.

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