复合多肽对早期断奶仔猪生长性能、血液理化指标和肠道主要菌群数量的影响  

Effects of Complex Polypeptide on Growth Performance,Blood Physiological and Chemical Parameters and Intestinal Main Microbial Flora Number in Early-Weaner Piglets

作　　者：谷娟[1] 许丛丛[1] 蔡旋[1] 杨守凤[1] 祁亮 徐建雄[1] 

机构地区：[1]上海交通大学农业与生物学院,上海市兽医生物技术重点实验室,上海200240 [2]上海九川生物科技有限公司,上海201404

出　　处：《动物营养学报》2013年第3期579-586,共8页CHINESE JOURNAL OF ANIMAL NUTRITION

摘　　要：本试验旨在探究复合多肽对早期断奶仔猪生长性能、血液理化指标和肠道主要菌群数量的影响。将90头21日龄断奶的"杜×长×大"三元杂交仔猪按体重相近、公母各占1/2的原则随机分为3组,每组3个重复,每个重复10头猪。对照组饲喂基础饲粮,试验组分别在基础饲粮中添加0.5%和1.0%的复合多肽,试验期30d。在试验的第30天测定断奶仔猪的各项生长性能指标、血液中各项理化指标以及肠道菌群数量。结果表明:与对照组相比,饲粮中添加0.5%和1.0%的复合多肽均可以增加断奶仔猪的平均日增重和平均日采食量,降低料重比,但差异不显著(P>0.05);饲粮中添加0.5%的复合多肽显著提高血清总抗氧化能力(P<0.05),添加1.0%的复合多肽显著降低血清一氧化氮含量(P<0.05);饲粮中添加0.5%和1.0%的复合多肽均可以在一定程度上提高血清免疫指标,且1.0%的添加水平能显著提高血清白细胞介素-2、甲状腺素、胰岛素和胃泌素的含量(P<0.05);饲粮中添加0.5%的复合多肽可以显著降低肠道中大肠杆菌数量,提高乳酸杆菌的数量(P<0.05)。由此可见,饲粮中添加0.5%和1.0%的复合多肽均可以在一定程度上提高断奶仔猪生长性能以及抗氧化能力,提高血清中各项免疫指标以及激素含量,并且添加0.5%的复合多肽能显著提高肠道中乳酸杆菌数量,降低大肠杆菌数量。This study was to investigate the effects of comp1ex po1ypeptide on growth performance, physio1ogi ca1 and chemica1 parameters in b1ood and intestina1 main microbia1 f1ora unmber in ear1yweaner pig1ets. Ninety 21dayo1d weaner pig1ets with simi1ar average body weight were random1y a11ocated to 3 groups with 3 rep1i cates per group and 10 pig1ets per rep1icate. The contro1 group was fed a basa1 diet and the experimenta1 groups were fed the basa1 diets supp1emented with 0.5% and 1.0% comp1ex po1ypeptide, respective1y. The experi ment period was 30 days. The resu1ts showed as fo11ows： compared with the contro1 group, the supp1ementa tion of 0.5% and 1.0% comp1ex po1ypeptide cou1d improve average dai1y gain and average dai1y feed intake, and decrease feed/gain in the experiment period （ P 〉 0.05 ）. The supp1ementation of 0.5 % comp1ex po1ypep tide significant1y increased the tota1 antioxidant capacity （P 〈 0.05 ）, and the supp1ementation of 1.0% com p1ex po1ypeptide significant1y decreased the content of nitric oxide in serum （ P 〈 0, 05 ）, Addition of 0, 5 % and 1.0 % comp1ex po1ypeptide cou1d increase serum immune indices to different extents, and the supp1ementa tion of 1.0% comp1ex po1ypeptide significant1y increased the contents of inter1eukin2, thyroxine, insu1in and gastrin in serum （ P 〈 0.05 ）. The supp1ementation of 0.5% comp1ex po1ypeptide significant1y increased the number of Lactobaci11us and significant1y decreased the number of Escherichia co1i in intestina1 tract （ P 〈 0.05）. In conc1usion, supp1ementation of 0.5% and 1.0% comp1ex po1ypeptide in diets improves growth performance, antioxidant abi1ity, immune indices and hormone indices in serum, and the supp1ementation of 0.5 % comp1ex po1ypeptide increases the number of Lactobaci11us and decreases the number of Escherichia co1i in intestina1 tract.

关 键 词：复合多肽 断奶仔猪 生长性能 肠道菌群 

分 类 号：S828[农业科学—畜牧学]