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1 Kononoff, P. J., "The effect of reducing alfalfa haylage particle size on cows in early lactation" 86 : 1445-1457, 2003
2 Kononoff, P. J., "The effect of corn silage particle size and cottonseed hulls on cows in early lactation" 86 : 2438-2451, 2003
3 Poppi, D. P., "Studies of cattle and sheep eating leaf and stem fractions of grasses. I. The voluntary intake, digestibility and retention time in the reticulorumen" 32 : 99-108, 1981
4 American Society of Agricultural Engineers, "S424: Method of Determining and Expressing Particle size of Chopped Forage Materials by Sieving Screening"
5 Allen, M. S., "Relationship between fermentation acid production in the rumen and the requirement for physically effective fiber" 80 : 1447-1462, 1997
6 Buckmaster, D. M., "Recent Advances in Animal Nutrition" Nottingham University Press 109-128, 2000
7 Grant, R. J., "Milk fate depression in dairy cow: role of silage particle size" 73 : 1834-1842, 1990
8 Mertens, D. R., "Measuring fiber and its effectiveness in ruminant diets" 40-66, 2002
9 Association of Official Analytical Chemists, "International. 1990. Official Methods of Analysis"
10 Soita, H. W., "Influence of particle size on the effectiveness of the fiber in barley silage" 83 : 2295-2300, 2000
11 Schwab, E. C., "Estimating silage energy value and milk yield to rank corn hybrids" 109 : 1-18, 2003
12 Calberry, J. M., "Effects of replacing chopped alfalfa hay with alfalfa silage in a total mixed ration on production and rumen conditions of lactating dairy cows" 86 : 3611-3619, 2003
13 Yang, W. Z., "Effects of physically effective fiber on chewing activity and ruminal pH of dairy cows fed diets based on barley silage. J. Dairy Sci. 89 : 217-228" 89 : 217-228, 2006
14 Yang, W. Z., "Effects of particle size of alfalfa-based dairy cow diets on site and extent of digestion" 85 : 1958-1968, 2002
15 Beauchemin, K. A., "Effects of particle size of alfalfa based dairy cow diets on chewing activity, ruminal fermentation, and milk production" 86 : 630-643, 2003
16 Yang, W. Z., "Effects of grain processing, forage to concentrate ratio, and forage particle size on rumen pH and digestion by dairy cows" 84 : 2203-2216, 2001
17 Einarson, M. S, "Effects of barley silage chop length on productivity and rumen conditions of lactating dairy cows fed a total mixed ration" 87 : 2987-2996, 2004
18 Teimouri Yansari, A., "Effects of alfalfa particle size and specific gravity on chewing activity, digestibility, and performance of Holstein dairy cows" 87 : 3912-3924, 2004
19 Mertens, D. R, "Creating a system for meeting the fiber requirements of dairy cows" 80 : 1463-1481, 1997
20 Brouk, M, "Chewing activity and digestive responses of cows fed alfalfa forages" 76 : 175-182, 1993
21 Mertens, D. R., "Balancing carbohydrates in dairy rations" 150-, 1988
22 Lammers, B. P., "A simple method for the analysis of particle sizes of forage and total mixed rations" 79 : 922-928, 1996
23 Michalet-Doreau, B., "A comparison of enzymatic and molecular approaches to characterize the cellulolytic microbial ecosystems of the rumen and the cecum" 80 : 790-796, 2002