An in vitro culture method to examine the associative effects between roughage and concentrate feeds with different GI indexes

• YANG Hongming, 
• WANG Yu, 
• ZHANG Yifeng, 
• LI Han, 
• XU Hongyang, 
• WANG Xiangming, 
• LIU Yuchen, 
• YANG Xiaoming, 
• QI Zhili