Publisher : The Korean Society of Grassland and Forage Science
DOI : 10.5333/KGFS.2013.33.4.304
Title & Authors
Effect of Levels of Total Neutral Detergent Fiber and Forage-derived Neutral Detergent Fiber on Feed Intake and Milk production in Holstein Dairy Cows Lee, Do Hyung; Kwon, Chan Ho; Kim, Eun Joong; Kim, Hyun-Jin; Kim, Gyeom-Heon; Kim, Soo-Ki;
This study was conducted to investigate the effect of total neutral detergent fiber (NDF) and forage-derived NDF (fNDF) on nutrient intake and milk production in Holstein dairy cows. Thirty-six Holstein dairy cows at weeks 4 to 20 of lactation were included in this study. The cows were arranged in a randomized complete block design and assigned to one of six diets: 1) 38% NDF with 18% fNDF (HN-HF); 2) 38% NDF with 15% fNDF (HN-MF); 3) 38% with 12% fNDF (HN-LF); 4) 34% NDF with 18% fNDF (LN-HF); 5) 34% NDF with 15% fNDF (LN-MF); and 6) 34% with 12% fNDF (LN-LF). The cows were fed a total mixed ration twice daily (07:00 and 18:00 h) and given ad libitum access to feed and water throughout the experiment. Data on the intake of nutrients (DM, NEl, CP, NDF, fNDF, NFC), milk yield, composition, fat-corrected milk (FCM), fat and protein corrected milk (FPCM), and energy corrected milk (ECM) were analyzed. Lower dietary concentrations of total NDF or fNDF resulted in an increase in DM, NEl, and NFC intake (p<0.01), milk yield (p<0.05) and a lower milk fat concentration (p<0.01). The LN treatment showed no significant differences in milk fat concentration compared to the HN however, further reduction in fNDF decreased milk fat content (p<0.01). The lowest level of milk fat was observed in the LN-LF diet group. Changes in the dietary concentrations of NDF or fNDF did not affect the concentrations of milk protein or SNF (solid not fat), although the yield of milk protein and SNF increased with higher milk yield (p<0.01). The level of fNDF influenced the level of FCM (p=0.07), as well as FPCM and ECM yield (p<0.05). A highly positive correlation between fNDF intake and milk fat concentration was observed in animals with low NDF compared to those offered high NDF. A strong correlation was also observed between milk yield and low NDF intake compared to high NDF intake.
Forage-NDF;Milk yield;Dairy cow;
AFRC. 1993. Energy and protein requirements of ruminants An advisory manual prepared by the AFRC Technical Committee on responses to Nutrients, CAB International Wallingford, UK.
Allen, M.S., Bradford, B.J. and Oba, M. 2009. BOARD-INVITED REVIEW: The hepatic oxidation theory of the control of feed intake and its application to ruminants. Journal of Animal Science. 87:3317-3334.
AOAC. 1990. Official Methods of Analysis. 15th. Association of Official Analytical Chemist. Washington, DC.
Batajoo, K.K. and Shaver, R.D. 1994. Impact of nonfiber carbohydrate on intake, digestion, and milk production by dairy cows. Journal of Dairy Science. 77:1580-1588.
Beauchemin, K.A. 1991. Effects of dietary neutral detergent fiber concentration and alfalfa hay quality on chewing, rumen function, and milk production of dairy cows. Journal of Dairy Science. 74:3140-3151.
Briceno, J.V., Van Horn, H.H., Harris, B., Jr. and Wilcox, C.J. 1987. Effects of neutral detergent fiber and roughage source on dry matter intake and milk yield and composition of dairy cows. Journal of Dairy Science. 70:298-308.
Firkins, J.L. 1997. Effects of feeding nonforage fiber sources on site of fiber digestion. Journal of Dairy Science. 80:1426-1437.
Fox, D.G., Sniffen, C.J., O'Connor, J.D., Russell, J.B. and Van Soest, P.J. 1992. A net carbohydrate and protein system for evaluating cattle diets: III. Cattle requirements and diet adequacy. Journal of Animal Science.70:3578-3596.
Grant, R.J. 1997. Interactions among forages and nonforage fiber sources. Journal of Dairy Science. 80:1438-1446.
Kaske, M. and Engelhardt, W.V. 1990. The effect of size and density on mean retention time of particles in the gastrointestinal tract of sheep. British Journal of Nutrition. 63:457-465.
Kendall, C., Leonardi, C., Hoffman, P.C. and Combs, D.K. 2009. Intake and milk production of cows fed diets that differed in dietary neutral detergent fiber and neutral detergent fiber digestibility. Journal of Dairy Science. 92:313-323.
McQueen, R.E. and Robinson, R.H. 1996. Intake behavior, rumen fermentation and milk production of dairy cows as influenced by dietary levels of fermentable neutral detergent fiber. Canadian Journal of Animal Science. 76:357-365.
Mertens, D.R. 1987. Predicting intake and digestibility using mathematical models of ruminal function. Journal of Animal Science. 64:1548-1558.
NRC. 1989. Nutrient requirement of dairy cattle. 6th revised ed. National Academic Science. Washington DC.
Oba, M. and Allen, M.S. 1999. Evaluation of the importance of the digestibility of neutral detergent fiber from forage: Effects on dry matter intake and milk yield of dairy cows. Journal of Dairy Science. 82:589-596.
Reid, J.T., Moe, P.W. and Tyrrell, H.F. 1966. Symposium: Reevaluation of nutrient allowances for high-producing cows: Energy and protein requirements of milk production. Journal of Dairy Science. 49:215-223.
SAS. 2000. User's Guide:Statistics, release. 8.1 version Edition. SAS Inst. Cary, NC. USA.
Sievert, S.J. and Shaver, R.D. 1993. Carbohydrate and Aspergillus oryzae effects on intake, digestion, and milk production by dairy cows. Journal of Dairy Science. 76:245-254.
Steel, R.G.D. and Torrie, J.H. 1980. Principles and procedures of statistics. McGraw-Hill Book Co., Inc. New York. USA.
Van Soest, P.J. and Robertson, J.B. 1985. Analysis of forages and fibrous foods A laboratory manual for animal science, Cornell University Ithaca, USA. pp. 613.
Waldo, D.R. 1986. Effect of forage quality on intake and forage concentrate interactions. Journal of Dairy Science. 69:617-631.