Effects of different animal manures on the ecological factors and fish yield in fish ponds

Fang Yingxue, Guo Xianzhen, Wang Jikun Yang Yejin, Yang Yaping and Liu Zhiyun;Fisheries and Aquaculture Management Division

Effects of different animal manures on the ecological factors and fish yield in fish ponds

Autores

Fang Yingxue, Guo Xianzhen, Wang Jikun Yang Yejin, Yang Yaping and Liu Zhiyun;Fisheries and Aquaculture Management Division

Descripción

Different animal manures were used in the experiment. Fish yield of the chicken-manured pond was the highest, followed by that of the duck-manured pond, the pig-manured pond and the cow-manured pond. The factors which affected the fish yield were the inorganic nitrogen, phosphorus, and the biomass of zooplankton and phytoplankton.