摘要
本文旨在研究甘氨酸锌对断奶仔猪生长性能、免疫指标和肠道形态的影响。选用150头28日龄的杜×长×大三元杂交断奶仔猪,分成5组(每组3个重复,每个重复10头),对照组饲喂基础日粮,试验组饲喂分别在基础日粮中添加50、100和200 mg/kg甘氨酸锌(以锌计)和3 000 mg/kg氧化锌(以锌计)的日粮。饲养期为35 d。结果表明:与对照组相比,100 mg/kg的甘氨酸锌组和3 000 mg/kg的氧化锌组极显著提高了仔猪的日增重(P<0.01);100 mg/kg的甘氨酸锌组和3 000 mg/kg的氧化锌组的胰脏指数、淋巴结指数、血清中IgG、IgM、补体C3和补体C4水平以及十二指肠的绒毛高度都显著高于对照组(P<0.05),其中100 mg/kg甘氨酸锌组还显著降低了空肠的隐窝深度(P<0.05)。结果提示,饲料中添加甘氨酸锌能够促进断奶仔猪生长、提高断奶仔猪的免疫机能。
This experiment was conducted to study the effects of dietary zinc glycine chelate （Zn-Gly） on growth performance, immunological parameters and intestinal morphology in weanling piglets. One hundred and fifty 28-day-old crossbred piglets （Duroc × Landrace × Yorkshire） were randomly allocated to 5 groups （3 replicates in each group and 10 piglets per replicate） and fed with basal diets supplemented with 0, 50, 100, 200 mg/kg Zn as Zn-Gly or 3 000 mg/kg Zn as zinc oxide （ZnO）. Feeding trial lasted for 35 d. The results showed as follows： compared with control group, average daily gain was significantly improved （P〈0.01） for piglets fed 100 mg/kg Zn from Zn-Gly or 3 000 mg/kg Zn from ZnO; and 100 mg/kg Zn-Gly and 3 000 mg ZnO significantly improved the levels of serum IgG, IgM, C3 and C4, pancreas index, lymph index and villus height of duodenum （P 〈 0.05）; and 100 mg/kg Zn-Gly also significantly decreased crypt depth of jejunum （P〈0.05）. The results indicated that adding Zn-Gly into diets could improve the growth performance and the immunological characteristics of weanling piglets.
出处
《动物营养学报》
CAS
CSCD
北大核心
2010年第1期176-180,共5页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
国家重大基础研究发展计划“973”资助项目(2004CB117506)
浙江省重大科技攻关资助项目(2005C12010)
关键词
甘氨酸锌
断奶仔猪
生长性能
免疫机能
Zinc glycine chelate
Weanling piglets
Growth performance
Immunological characteristics
作者简介
王勇（1984-），男，湖南益阳人，硕士研究生，主要从事动物营养与饲料科学研究。E-mail：wangyong841219@163．com
通讯作者：冯杰，教授，E-mail：fengj@zju．edu．cn
