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.［Chinese Journal of Animal Nutrition, 2010，22（1）:176-180］