This work was supported by National Natural Science Foundation of China(31730104,31872247,31870396,32000297,32070450,and 32070453);Strategic Priority Research Program of the Chinese Academy of Sciences(XDB31020302);key program of Forestry Science Research of Shaanxi(SHLY-2018-07);and Natural Science Foundation of Shaanxi Province in China,2018JC-022,2016JZ009.D.W.D.is supported by a Talents 1000 Fellowship of Shaanxi Province.
In mammal herbivores,fiber digestion usually occurs predominantly in either the foregut or the hindgut.Reports of mechanisms showing synergistic function in both gut regions for the digestion of fiber and other nutrie...