Subjects: Biology >> Zoology submitted time 2017-10-11 Cooperative journals: 《动物营养学报》
Abstract：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（P<0.05），并显著降低料重比（P<0.05）。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(P<0.05)，显著提高十二指肠、空肠和回肠中乳酸菌数量（P<0.05）。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（P<0.05），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(P<0.05)。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。
Subjects: Biology >> Zoology submitted time 2017-10-10 Cooperative journals: 《动物营养学报》
Abstract： The experiment was conducted to study to the effects of alfalfa saponin on growth performance, intestinal microflora, antioxidant ability and related enzyme mRNA expression in tissues of weaned piglets. A total of 24 crossed-bred (Landrace譒arge White) piglets with an average body weight of 8 kg were randomly assigned to 2 groups with 3 replicates each and 4 piglets in each replicate. The piglets in control group were fed a basal diet, and in alfalfa saponin group were fed the basal diet supplemented with 0.25% alfalfa saponin. The experiment lasted for 30 days after 10 days pre-experiment. The results showed as follows: 1) compared with control group, dietary alfalfa saponin significantly increased average daily gain (P<0.05) and significantly decreased the ratio of feed to gain (P<0.05) of weaned piglets. 2) Compared with control group, dietary alfalfa saponin significantly reduced pH in duodenum and cecum (P<0.05), significantly increased the numbers of Lactobacillus in duodenum, jejunum and cecum (P<0.05) of piglets. 3) Compared with control group, dietary alfalfa saponin significantly increased the activity of glutathion peroxidase (GSH-Px) and catalase (CAT) in liver and kidney (P<0.05), and significantly improved the mRNA expression level of GSH-Px in liver and jejunum as well as the mRNA expression level of CAT in duodenum and ileum (P<0.05) of piglets. In summary, dietary alfalfa saponin can enhance growth performance of weaned piglets, improve antioxidant ability in tissues and have a good benefit on intestinal microflora.
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