【摘要】 4种红萍喂养尼罗罗非鱼和草鱼的结果表明，一年4季的最佳红萍品种为：春季卡洲萍，夏季卡洲萍和羽叶萍，秋季羽叶萍，冬季细绿萍。而且红萍体内的蛋白质含量越高，纤维含量越低，其适口性越好。更多还原

【Abstract】 A comparative study on the appetency of duckweed to two species of fish, Tilapia nilotica and grass carp Ctenopharyngodon idellus, showed a clear preference for Azolla caroliniana in spring, Azolla caroliniana and Azolla pinnata var. imbricata in summer, Azolla pinnata var. imbricata in autumn and Azolla filiculoides in winter. The fish appetency to azolla is supposed to be related to the protein and cellulose contents in different species of azolla.更多还原