[Objective] The research aimed to evaluate the safety of fermented cow dung to dairy cows and test its application effects in the production. [Method] The changes of water content in cow dung before and after the fermentation were compared. And the kinds and number of bacteria were detected and the safety of the fermented cow dung was evaluated. [Result] The pathogen that could induce the incidence of dairy cows wasn't found in the fermented cow dung. In the clinical application,NH3 content in the shed of d...
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