Influences of Total Mixed Diets with Different ConcentrateRoughage Ratio on pHand Activity of Digestive Enzymes in Alimentary Canal of Fattening Lambs
YANG Zijiang;NIAN Fang;LI Fadi;MA Youji;GUO Jiangpeng;HAO Zhengli
ACTA VETERINARIA ET ZOOTECHNICA SINICA . 2009, (9): 1333 -1340 .