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Effects of the dietary supplementation with fructooligosaccharides on the excretion of nitrogen and phosphorus in Miichthys miiuy fries 总被引:3,自引:0,他引:3
INTRODUCTION Aquaculture, one of fastest-growing food in-dustries, has increased worldwide at an average rate of 9.2% per year since 1970, compared with only 1.4% for capture fisheries and 2.8% for terrestrial farmed meat production system (FAO, 2002). Aquaculture has become the most advanced among agricultural fields. Simultaneously, due to intensive farming and lack of controlling guidelines, aquacul-ture’s impact on the environment has become of in-creasing concern. Excessive nutrie… 相似文献
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在本科生微生物学的理论教学中,引入“讨论式”教学方法,由学生登台讲述,并在此基础上,与复旦大学相同或相似专业背景、相同年级的学生就彼此感兴趣的题目进行课堂讨论交流,旨在提高学生的综合素质和教师的有效教学,在多个方面取得了明显效果。最后,作者总结了提高教学质量的体会及建议。 相似文献
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