MERTENS D R.Creating a system for meeting the fiber requirements of dairy cows[J].Journal of Dairy Science, 1997, 80(7):1463-1481.
[3]
SCHWAB E C, SHAVER R D, SHINNERS K J, et al.Processing and chop length effects in Brown-Midrib corn silage on intake, digestion, and milk production by dairy cows[J].Journal of Dairy Science, 2002, 85(3):613-623.
HEINRICHS A J, KONONOFF P J.Evaluating particle size of forages and TMRs using the Penn State Particle Separator[EB/OL].[2010-06-01].http://www.vetm ed.wsu.edu/courses-jmgay/ documents/DAS02421.pdf.
MUYZER G, DE WAAL E C, UITTERLINDEN A G.Profiling of complex microbial populations by denaturing gradient gel electrophoresis analysis of polymerase chain reaction-amplified genes coding for 16S rRNA[J].Applied and environmental microbiology, 1993, 59(3):695-700.
[15]
王加启.反刍动物营养学研究方法[M].北京:现代教育出版社, 2011:33.
[16]
BEAUCHEMIN K A, YANG W Z, RODE L M.Effects of particle size of alfalfa-based dairy cow diets on chewing activity, ruminal fermentation, and milk production[J].Journal of Dairy Science, 2003, 86(2):630-643.
[17]
YANG W Z, BEAUCHEMIN K A, RODE L M.Effects of particle size of alfalfa-based dairy cow diets on site and extent of digestion[J].Journal of Dairy Science, 2002, 85(8):1958-1968.
[18]
冯仰廉.反刍动物营养学[M].北京:科学出版社, 2004.
[19]
BEAUCHEMIN K A, YANG W Z.Effects of physically effective fiber on intake, chewing activity, and ruminal acidosis for dairy cows fed diets based on corn silage[J].Journal of Dairy Science, 2005, 88(6):2117-2129.
[20]
KONONOFF P J, HEINRICHS A J.The effect of reducing alfalfa haylage particle size on cows in early lactation[J].Journal of Dairy Science, 2003, 86(4):1445-1457.
