Effects of different rations of hybrid Pennisetum americanum×P. purpureum cv. Minmu 6 in Leymus chinensis hay on production performance and milk quality of dairy cows

• De-qing Feng, 
• Qin-lou Huang, 
• Xiu-sheng Huang, 
• Zhong-dian Chen, 
• Zhen-mei Zhong