Effect of Dietary Copper Sources and Concentrations on Serum Lysozyme Concentration and Protegrin-1 Gene Expression in Weaning Piglets

The aim of this study was to investigate the effect of dietary copper sources and concentrations on serum immune indices and the protegrin-1 (NPG1) expression level in the bone marrow of weaning piglets. A total of 80 crossbred piglets (Duroc × Landrace × Yorkshire), with the average age of 21 days and the initial body weight of 7.00±0.03 kg, were randomly assigned to five treatments for 14 days by different kinds of diet. The dietary treatments...