Publisher : The Korean Society of Grassland and Forage Science
DOI : 10.5333/KGFS.2013.33.3.193
Title & Authors
Evaluation of Physically Effective Fiber for Distributing Total Mixed Rations in Korea Jeon, Byong Tae; Kim, Kyoung Hoon; Kim, Myeong Hwa; Oh, Mi Rae; Li, Hongliang; Moon, Sang Ho;
This study was carried out to evaluate the physical characteristics of total mixed rations (TMR) prepared in Korea for improving productive effectiveness of dairy and beef cattle. The 40 samples of commercial TMR for dairy and beef cattle in 6 municipals were collected and analyzed for chemical composition and physical properties. There were significant regional differences (p<0.05) in dry matter and crude protein contents of TMR for dairy and beef cattle. In roughage value index (RVI), neutral detergent fiber (NDF) content, and physically effective NDF (peNDF) content, there were no regional differences in TMR for dairy cattle, but there were significant regional differences (p<0.05) in TMR for beef cattle. Thus the results from this study support that because RVI, NDF content, and peNDF content in TMR for dairy and beef cattle exceeded recommended ranges, a little adjustment in TMR for dairy cattle will be necessary to obtain optimal productivity.
Neutral detergent fiber;Physically effective fiber;Roughage value index;
AOAC 2007. Official Methods of Analysis. 18th ed, Association of Official Analytical Chemists, Washington, DC, USA.
Balch, C.C. 1971. Proposal to use time spent chewing as an index to which diets for ruminants possess the physical property of fibrousness characteristic of roughage. British Journal of Nutrition. 26:383-392.
Galyean, M.L. and Abney, C.S. 2006. Assessing roughage value in diets of high-producing cattle. Proceedings of the 21st Annual Southwest Nutrition and Management Conference. pp. 127-144.
Grant, R.J. 1997. Interactions among forages and nonforage fiber sources. Journal of Dairy Science. 80:1438-1446.
Kononoff, P.J., Heinrichs, A.J. and Buckmaster, D.R. 2003. Modification of the Penn State forage and total mixed ration particle separator and the effects of moisture content on its measurements. Journal of Dairy Science. 86:1858-1863.
Mertens, D.R. 1997. Creating a system for meeting the fiber requirements of dairy cattle. Journal of Dairy Science. 80:1463-1482.
Mertens, D.R. 2002. Measuring fiber and its effectiveness in ruminant diets. Proceedings Plains Nutrition Council Symposium. pp. 40-66.
SAS. 2008. SAS/STAT Software for PC. Release 9.2, SAS Institute Inc. Cary. NC. USA.
Sudweeks, E.M., Ely, L.O., Mertens, D.R. and Sisk, L.R. 1981. Assessing minimum amounts and form of roughages in ruminants diets: roughage value index system. Journal of Animal Science. 53: 1406-1411.
Van Soest, P.J. and Wine, R.H. 1967. Use of detergents in analysis of fibrous feeds. IV. Determination of plant cell-wall constituents. Journal of the Association of Official Analytical Chemists. 50:50-55.