TABLE 1.

Classification standards for FWC of RIR hens.

Level	The description of DM
1	The dropping is spherical, with a large cluster in the middle and a small amount of granular distribution around, and almost no water in the excrement
2	Fecal irregularity, containing a small amount of undigested feed and water, most of the middle of the fecal mass
3	Feed more undigested, there is a small amount of granular, water content, fecal formless
4	The feces were completely unformed, containing undigested feed particles, and were spread almost like water on the feces scraping board