为研究日粮锌与蛋白质互作对断奶仔猪生产性能以及部分血液生化指标的影响，将48头(21±2)日龄断奶D×L×Y三元杂交仔猪，采用2×3两因子析因法设计，按体重相近原则，分为6个处理，每个处理4个重复，每个重复2头猪。各处理分别为低锌（100mg/kg）高蛋白质（23%）组、低锌中蛋白质（20%）组、低锌低蛋白质（17%）组、高锌（3000mg/kg）高蛋白质组、高锌中蛋白质组和高锌低蛋白质组。结果表明：日粮锌与蛋白质互作能显著提高仔猪日增重（P<0.05），降低料重比（P<0.05），其中高锌高蛋白质组的全期日增重最高，为357g（P<0.01或P<0.05），料重比最低，为1.67（P<0.01或P<0.05）；试验前期（1～14d），高锌高蛋白质组的总蛋白和白蛋白含量极显著高于其他组（P<0.01）；试验前期（1～14d），锌对GSHPx和SOD有极显著影响（P<0.01）；高锌高蛋白质组的IgA、IgG和IgM含量显著高于其他组（P<0.01或P<0.05）。综合以上结果，锌与蛋白质互作有利于提高仔猪生产性能、增强抗氧化能力和免疫力，其中以高锌高蛋白质组的效果最佳，且锌主要在断奶后2周发挥作用。

To study the effects of zinc and protein interaction on growth performance and some blood biochemical indices in weaned piglets, fortyeight (21±2)-day-old weaned D×L×Y pigs were randomly allocated to 6 treatments with 4 replicates in each treatment of 2 pigs per replicate according to weight using a 2×3 twofactors experiment design. The six treatments were high protein (23%) with low zinc (100 mg/kg) group, middle protein (20%) with low zinc group, low protein (17%) with low zinc group, high protein with high zinc (3 000 mg/kg) group, middle protein with high zinc group, low protein with high zinc group, respectively. The results showed that the interaction of zinc and protein significantly improved average daily gain (ADG) (P<0.05), and decreased ratio of feed to gain (F/G) of the weaned piglets (P<0.05). ADG in high protein with high zinc group which was the highest was 357 g (P<0.01 or P<0.05), and F/G in high protein with high zinc group which was the lowest was 1.67 (P<0.01 or P<0.05). From day 1 to day 14 of the experiment, total protein (TP) and albumin (ALB) in high protein with high zinc group were higher compared with other groups (P<0.01). From day 1 to day 14 of the experiment, effects of zinc on GSHPx and SOD were significant (P<0.01). IgA, IgG and IgM in high protein with high zinc group were higher compared with those in other groups (P<0.01 or P<0.05). It was concluded that the interaction of zinc and protein could enhance the growth performance, oxidation resistance and immunity, and the group of optimal effect was high protein with high zinc group, and effects of zinc were obvious in the first two weeks after weaning.