在低营养水平、低铜组肉鸭的生长性能显著(P<0 05),高于低营养水平、高铜组和高营养水平、高铜组;
The low nutritional level and low copper group had significantly higher growth performance than 2 high copper groups (P<005).
在低营养水平、低铜组肉鸭的生长性能显著(P<0 05),高于低营养水平、高铜组和高营养水平、高铜组;
The low nutritional level and low copper group had significantly higher growth performance than 2 high copper groups (P<005).
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