苜蓿皂苷对断奶仔猪生长性能、肠道菌群、组织抗氧化能力及相关酶mRNA表达的影响

发布时间：2018-01-19 21:11

本文关键词： 苜蓿皂苷断奶仔猪生长性能肠道菌群抗氧化能力 mRNA表达量　出处：《动物营养学报》2017年12期 　论文类型：期刊论文

【摘要】：本试验旨在研究苜蓿皂苷对断奶仔猪生长性能、肠道菌群、组织抗氧化能力及相关酶mRNA表达的影响。选取24头平均体重为8 kg的大×长杂交断奶仔猪,随机分为2组,每组3个重复,每个重复4头猪。对照组饲喂基础饲粮,苜蓿皂苷组饲喂在基础饲粮中添加0.25%苜蓿皂苷的饲粮。预试期10 d,正试期30 d。结果表明:1)与对照组相比,饲粮中添加苜蓿皂苷可显著提高断奶仔猪平均日增重(P0.05),并显著降低料重比(P0.05)。2)与对照组相比,饲粮中添加苜蓿皂苷可显著降低仔猪十二指肠和盲肠的pH(P0.05),显著提高十二指肠、空肠和回肠中乳酸菌数量(P0.05)。3)与对照组相比,饲粮中添加苜蓿皂苷可显著提高仔猪肝脏和肾脏中谷胱甘肽过氧化物酶(GSH-Px)和过氧化氢酶(CAT)活性(P0.05),并显著提高仔猪肝脏和空肠中GSH-Px mRNA表达量及十二指肠和回肠中CAT mRNA表达量(P0.05)。综上,苜蓿皂苷可以提高断奶仔猪生长性能,增强其组织抗氧化能力并有效改善其肠道菌群。
[Abstract]:The purpose of this experiment was to study the growth performance and intestinal flora of alfalfa saponins in weaning piglets. 24 weaned piglets with average body weight of 8 kg were randomly divided into 2 groups with 3 repeats in each group. The control group was fed with basic diet and the alfalfa saponin group was fed with 0.25% alfalfa saponins in the basal diet for 10 days. The results showed that the addition of alfalfa saponin in diet could significantly increase the average daily gain of weaned piglets (P0.05). Compared with the control group, alfalfa saponin could significantly decrease the pH value of P0.05N in duodenum and cecum of piglets, and increase duodenum significantly. The number of lactic acid bacteria in jejunum and ileum was compared with that in control group. Addition of alfalfa saponins in diet could significantly increase the activities of GSH-Px and catalase CAT in liver and kidney of piglets (P0.05). The expression of GSH-Px mRNA in liver and jejunum and CAT mRNA in duodenum and ileum were significantly increased. Alfalfa saponins can improve the growth performance of weaned piglets, enhance their tissue antioxidant capacity and improve their intestinal flora.
【作者单位】：河南农业大学牧医工程学院;
【基金】：基金项目:苜蓿品种引进与中低产田土壤生态环境修复(2015-Z46) 现代农业产业技术体系(CARS-35)
【分类号】：S828.5
【正文快照】： 紫花苜蓿作为世界上种植范围最广、种植历史悠久的牧草主要具有以下优点:富含蛋白质、矿物质和维生素,并且蛋白质品质较好、氨基酸组成平衡、赖氨酸含量较高。丰富的苜蓿资源包含着很多潜在的活性成分,比如皂苷、黄酮和多糖等物质,而皂苷作为一种天然的有独特生物学活性的物质

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