The objective of this study was to evaluate the effects of dietary supplementation of Ca anacardate and citric acid for weaned piglets on growth performance, diarrhea incidence, pH of gastrointestinal contents, blood profile, intestinal morphometry, and immunohistochemistry in the periods I (d 0 to 12), II (d 12 to 22), III (d 22 to 42), and total (d 0 to 42). A total of 96 barrows weaned at 21 d of age (5.96 ±0.81 kg) were allocated to 4 treatments with 8 replicates pens and 3 piglets per pen in a randomized block design. The experimental treatments were: positive control, diet with addition of antibiotic growth promoter (AGP, 0.05% zinc bacitracin); negative control, diet without addition of AGP; negative control diet with addition of 1% citric acid and 0.6% Ca anacardate; and negative control diet with addition of 1% citric acid and 1% Ca anacardate. Piglets fed the diets containing AGP or Ca anacardate and citric acid had decreased values of feed:gain during the period III and total period (P < 0.05). The supply of Ca anacardate and citric acid or AGP for nursery piglets increased the mucosal thickness, villus height, and absorptive area in the duodenum, and also the number of goblet cells of jejunum (P < 0.05). No differences were observed among the treatments on diarrhea incidence, stomach and small intestine pH, and intestinal immunohistochemistry. Dietary supplementation of Ca anacardate and citric acid positively affected growth performance and intestinal morphometry of weaned piglets and resulted in similar results to the use of AGP.

这项研究的目的是评估断奶仔猪日粮中添加过磷酸钙和柠檬酸对仔猪生长性能，腹泻发生率，胃肠道pH值，血液分布，肠道形态和免疫组织化学的影响（d 0至12），II（d 12至22），III（d 22至42）和合计（d 0至42）。21天龄时共有96头断奶仔猪（5.96 ±在随机区组设计中，将0.81 kg）分配到4种处理中，每组8支重复笔，每支猪3头仔猪。实验方法是：阳性对照，添加抗生素生长促进剂（AGP，0.05％杆菌肽锌）的饮食；阴性对照，饮食不加AGP；阴性对照饮食，添加1％柠檬酸和0.6％的过氧化钙；阴性对照饮食中添加1％柠檬酸和1％二十二碳酸钠。在第三阶段和整个时期中，饲喂含有AGP或花生碱钙和柠檬酸的日粮的仔猪的饲料：增重值均降低（P  <0.05）。为苗圃仔猪供应合成碱和柠檬酸钙或AGP会增加十二指肠的粘膜厚度，绒毛高度和吸收面积，以及空肠杯状细胞的数量（P  <0.05）。腹泻的发生率，胃和小肠的pH值以及肠的免疫组织化学治疗之间没有差异。日粮中添加过磷酸钙和柠檬酸对断奶仔猪的生长性能和肠道形态有积极影响，其结果与使用AGP相似。