YAO Junhu, LI Fei, LI Fadi, SUN Feifei . Effective Fiber： Evaluation Systems and Recommendations for Ruminants[J]. Chinese Journal of Animal Nutrition, 2014 , 26(10) : 3168 -3174 . DOI: 10.3969/j.issn.1006-267x.2014.10.031

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