4. In conclusion, the addition of acidifier, probiotics and oligosaccharides alone or combined in the diet improved microbial population status and immune function of weaning piglets.
由此得出结论：酸化剂、益生素、寡糖单独或合并使用均能改善断奶仔猪微生物菌群，增强其免疫功能。
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5. It was concluded that the study of acidifier formula with the uniform design method was feasible and the test efficiency of formula of acidifier study was improved with the uniform design method.
结果提示，用均匀设计方法研制复合酸化剂的配方完全可行，而且可减少试验次数，提高试验效率。
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6. It was concluded that the study of acidifier formula with the uniform design method was feasible and the test efficiency of formula of acidifier study was improved with the uniform design method.
