Under the supplementation of bacterial phytase or citric acid,The daily body weight gains(ADG),Gain:feed(G:F)ratio and Calcium(Ca) utilization were similar to that of the standard-nutrient CSB diet(Diet 1)(P>0.05).

• 添加细菌性植酸酶或柠檬酸的日增重(ADG)、肉料比(G/F)和钙利用率与正常营养水平组差异不显著(P>0.；05)；但粪磷排泄量和蛋白质的利用率显著低于正对照组(P<0