and 4) from 26th day to 30th day (the end time of the experiment), the metabolic rate decreased most dramatically. There were only three phases during the course of CO 2 production and ammonia N excretion reduction.

 
  • 耗氧率和CO2 排出率、NH3 N排泄率的变化差别较大 ;耗氧率的减小可分为 4个阶段 ;而CO2 排出率和NH3 N排泄率的减小仅可分 3个阶段 .
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