Journal of Dairy Science
Volume 80, Issue 7 , Pages 1426-1437, July 1997

Effects of Feeding Nonforage Fiber Sources on Site of Fiber Digestion1

Department of Animal Sciences, The Ohio State University, Columbus 43210

Received 26 June 1995; accepted 25 June 1996.

Article Outline

Abstract 

Although many nonforage fiber sources have high extents of neutral detergent fiber (NDF) digestion, most have rates of digestion similar to or slower than the rates of forage NDF digestion. Rates of NDF digestion vary considerably among and within sources of by-products. Digestion kinetics also vary because of the technique used (in vitro versus in situ) and because of high amounts of dietary concentrate. Based on available data for passage rate and specific gravity measurements, rates of passage of nonforage fiber sources from the rumen of high producing cows appear to be faster than those of forages. Therefore, the potential to shift NDF digestion to the hindgut has been discussed. To account for variability in ruminal and total tract digestibility of NDF, multiple regression analysis was used to indicate that nonforage NDF percentage in the diet had about two-thirds the positive response on total tract NDF digestion that forage NDF percentage did. Although the loss of potentially digestible NDF may occur, DMI does not appear to decrease much until forage NDF is below 14 to 16% of dietary DM. Conversely, replacement of starch with nonforage NDF appears to increase digestibility of fiber, mostly in diets with high concentrations of nonfiber carbohydrates, apparently because of reduced negative associative effects. Increasing the concentration of total NDF above 35% also can decrease DMI with little improvement in NDF digestibility. Increased knowledge of the kinetics of digestion and the passage of various nonforage fiber sources used to replace forage or concentrate should increase the accuracy and precision of dynamic models, thereby increasing the flexibility and utility of nonforage fiber sources in dairy rations.

Key words: by-products, fiber digestion, passage rate, dairy cows

Abbreviation key: FNDF, forage NDF, NCPS, Net Carbohydrate and Protein System, NFC, nonfiber carbohydrate, NFFS, nonforage fiber source, NNDF, nonforage NDF

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References 

  1. Anderson SJ, Merrill JK, McDonnell ML, Klopfenstein TJ. Digestibility and utilization of mechanically processed soybean hulls by lambs and steers. J. Anim. Sci. 1988;66:2965
  2. Baldwin RL, Emery RS, McNamara JP. Metabolic relationships in the supply of nutrients for milk protein synthesis: integrative modeling. J. Dairy Sci. 1994;77:2821
  3. Batajoo KK, Shaver RD. Impact of nonfiber carbohydrate on intake, digestion, and milk production by dairy cows. J. Dairy Sci. 1994;77:1580
  4. Beauchemin KA, Farr BI, Rode LM. Enhancement of the effective fiber content of barley-based concentrates fed to dairy cows. J. Dairy Sci. 1991;74:3128
  5. Beckers Y, Thewis A, Maudox B, Francois E. Studies on the in situ nitrogen degradability corrected for bacterial contamination of concentrate feeds in steers. J. Anim. Sci. 1995;73:220
  6. Belyea RL, Steevens BJ, Restrepo RJ, Clubb AP. Variation in composition of by-product feeds. J. Dairy Sci. 1989;72:2339
  7. Bernard JK, DeLost RC, Mueller FJ, Miller JK, Miller WM. Effect of wet or dry corn gluten feed on nutrient digestibility and milk yield and composition. J. Dairy Sci. 1991;74:3913
  8. Bernard JK, McNeill WW. Effect of high fiber energy supplements on nutrient digestibility and milk production of lactating dairy cows. J. Dairy Sci. 1991;74:991
  9. Bhatti SA, Firkins JL. Kinetics of hydration and functional specific gravity of fibrous feed by-products. J. Dairy Sci. 1995;73:1449
  10. Bosch MW, Bruining M. Passage rate and total clearance rate from the rumen of cows fed on grass silages differing in cell-wall content. Br. J. Nutr. 1995;73:41
  11. Bowman JGP, Firkins JL. Effects of forage species and particle size on bacterial cellulolytic activity and colonization in situ. J. Dairy Sci. 1993;71:1623
  12. Broderick GA, Merchen NR. Markers for quantifying microbial protein synthesis in the rumen. J. Dairy Sci. 1992;75:2618
  13. Cameron MR, Klusmeyer TH, Lynch GL, Clark JH. Effects of urea and starch on rumen fermentation, nutrient passage to the duodenum, and performance of cows. J. Dairy Sci. 1991;74:1321
  14. Christensen RA, Cameron MG, Klusmeyer TH, Elliott JP, Clark JH, Nelson DR, et al. Influence of amount of degradability of dietary protein on nitrogen utilization by dairy cows. J. Dairy Sci. 1993;76:3497
  15. Clark JH, Klusmeyer TK, Cameron MR. Microbial protein synthesis and flows of nitrogen fractions to the duodenum of dairy cows. J. Dairy Sci. 1992;76:2304
  16. Combs DK, Shaver RD, Satter LD. Retention of rare earths by hay particles following incubation in fresh or autoclaved rumen fluid. J. Dairy Sci. 1992;75:132
  17. Craig WM, Hong BJ, Broderick GA, Bula RJ. In vitro inoculum enriched with particle-associated microorganisms for determining rates of fiber digestion and protein degradation. J. Dairy Sci. 1984;67:2902
  18. Cunningham KD, Cecava MJ, Johnson TR. Nutrient digestion, nitrogen, and amino acid flows in lactating cows fed soybean hulls in place of forage or concentrate. J. Dairy Sci. 1993;76:3523
  19. Dado RG, Allen MS. Intake limitations, feeding behavior, and rumen function of cows challenged with rumen fill from dietary fiber or inert bulk. J. Dairy Sci. 1995;78:118
  20. de Visser H, van der Togt PL, Huisert H, Tamminga S. Structural and nonstructural carbohydrates in concentrate supplements of silage-based dairy cow rations. 2. Rumen degradation, fermentation, and kinetics. Neth. J. Agric. Sci. 1992;40:431
  21. Dewhirst RJ, Hepper D, Webster AJF. Comparison of in sacco and in vitro techniques for estimating the rate and extent of rumen fermentation of a range of dietary ingredients. Anim. Feed Sci. Technol. 1994;51:211
  22. Dhanoa MS, France J, Siddons RC, Lopez S, Buchanan-Smith JG. A non-linear compartmental model to describe forage degradation kinetics during incubation in polyester bags in the rumen. Br. J. Nutr. 1995;73:3
  23. Edionwe AO, Owen FG. Relation of intake to digestibility of diets containing soyhulls and distillers dried grains. J. Dairy Sci. 1989;72:1786
  24. Erdman RA, Vandersall JH, Russek-Cohen RE, Switalski G. Simultaneous measures of rates of ruminal digestion and passage of feeds for prediction of ruminal nitrogen and dry matter digestion in lactating dairy cows. J. Anim. Sci. 1987;64:565
  25. Fadel JG. Application of theoretically optimal sampling schedule designs for fiber digestion estimation in sacco. J. Dairy Sci. 1992;75:2184
  26. Firkins JL. Maximizing microbial protein synthesis in the rumen. J. Nutr. 1996;126:1347S
  27. Firkins JL, Berger LL, Fahey GC. Evaluation of wet and dry distillers grains and wet and dry corn gluten feeds for ruminants. J. Anim. Sci. 1985;60:847
  28. Firkins JL, Eastridge ML. Replacement of forage or concentrate with combinations of soyhulls, sodium bicarbonate, or fat for lactating dairy cows. J. Dairy Sci. 1992;75:2752
  29. Firkins JL, Eastridge ML, Palmquist DL. Replacement of corn silage with corn gluten feed and sodium bicarbonate for lactating cows. J. Dairy Sci. 1991;74:1944
  30. Grant RJ, Weidner SJ. Digestion kinetics of fiber: influence of in vitro buffer pH varied within observed physiological range. J. Dairy Sci. 1992;75:1060
  31. Harmison BS, Eastridge ML, Firkins JL. Effect of forage NDF and source of nonstructural carbohydrates (NSC) on performance of lactating cows. J. Dairy Sci. 1995;73(Suppl. 2):105;(Abstr.)
  32. Hoover WH. Chemical factors involved in fiber digestion. J. Dairy Sci. 1986;69:2755
  33. Hoover WH, Stokes SR. Balancing carbohydrates and proteins for optimum rumen microbial yield. J. Dairy Sci. 1991;74:3630
  34. Klusmeyer TH, Lynch GL, Clark JH, Nelson DR. Effects of calcium salts of fatty acids and protein source on ruminal fermentation and nutrient flow to duodenum of cows. J. Dairy Sci. 1991;74:2206
  35. Klusmeyer TH, Lynch GL, Clark JH, Nelson DR. Effects of calcium salts of fatty acids and proportion of forage in diet on ruminal fermentation and nutrient flow to duodenum of cow. J. Dairy Sci. 1991;74:2220
  36. Klusmeyer TH, McCarthy RD, Clark JH, Nelson DR. Effects of source and amount of protein on ruminal fermentation and passage of nutrients to the small intestine of lactating cows. J. Dairy Sci. 1990;73:3526
  37. Llamas-Lamas G, Combs DK. Effect of forage to concentrate ratio and intake level on utilization of early vegetative alfalfa silage by dairy cows. J. Dairy Sci. 1991;74:526
  38. Lopez S, France J, Dhanoa MS. A correction for particulate matter loss when applying the polyester-bag method. Br. J. Nutr. 1994;71:135
  39. Lynch GL, Klusmeyer TH, Cameron MR, Clark JH, Nelson DR. Effects of somatotropin and duodenal infusion of amino acids on nutrient passage to duodenum and performance of dairy cows. J. Dairy Sci. 1991;74:3117
  40. McAllister TA, Bae HD, Jones GA, Cheng K-J. Microbial attachment and feed digestion in the rumen. J. Anim. Sci. 1994;72:3004
  41. McCarthy RD, Klusmeyer TH, Vicini JL, Clark JH, Nelson DR. Effects of source of protein and carbohydrate on ruminal fermentation and passage of nutrients to the small intestine of lactating cows. J. Dairy Sci. 1989;72:2002
  42. Mertens DR. Dietary fiber components: relationship to the rate and extent of ruminal digestion. Fed. Proc. 1977;36:187
  43. Mertens DR. Rate and extent of digestion. In:  Forbes JM,  France J editor. Quantitative Aspects of Ruminant Digestion and Metabolism. Wallingford, England: CAB Int; 1993;p. 13
  44. Mertens DR, Loften JR. The effect of starch on forage fiber digestion kinetics in vitro. J. Dairy Sci. 1980;63:1437
  45. Michalet-Doreau B, Ould-Bah MY. In vitro and in sacco methods for the estimation of dietary nitrogen degradability in the rumen: a review. Anim. Feed Sci. Technol. 1992;40:57
  46. Miller BG, Muntifering RB. Effect of forage: concentrate on kinetics of forage fiber digestion in vitro. J. Dairy Sci. 1985;68:40
  47. Nakamura K, Owen FG. High amounts of soyhulls for pelleted concentrate diets. J. Dairy Sci. 1989;72:988
  48. National Research Council. Nutrient Requirements of Dairy Cattle. 6th rev. ed. Washington, DC: Natl. Acad. Sci; 1989;
  49. Nocek JE. In situ and other methods to estimate ruminal protein and energy digestibility: a review. J. Dairy Sci. 1988;71:2051
  50. Nocek JE, English JE. In situ degradation kinetics: evaluation of rate determination procedure. J. Dairy Sci. 1986;69:77
  51. Nocek JE, Russell JB. Protein and energy as an integrated system: relationship of ruminal protein and carbohydrate availability to microbial synthesis and milk production. J. Dairy Sci. 1988;71:2070
  52. Nocek JE, Tamminga S. Site of digestion of starch in the gastrointestinal tract of dairy cows and its effect on milk yield and composition. J. Dairy Sci. 1991;74:3598
  53. Ohajuruka OA, Palmquist DL. Response of highproducing dairy cows to high levels of dried corn gluten feed. Anim. Feed Sci. Technol. 1989;24:191
  54. Owens FN, Hanson CF. External and internal markers for appraising site and extent of digestion in ruminants. J. Dairy Sci. 1992;75:2605
  55. Piwonka EJ, Firkins JL. Effect of glucose on fiber digestion and particle-associated carboxymethlcellulase activity in vitro. J. Dairy Sci. 1993;76:129
  56. Piwonka EJ, Firkins JL. Effect of glucose fermentation on fiber digestion by ruminal microorganisms in vitro. J. Dairy Sci. 1996;79:2196
  57. Rayburn EB, Fox DG. Variation in neutral detergent fiber intake of Holstein cows. J. Dairy Sci. 1993;76:544
  58. Russell JB, O’Conner JD, Fox DG, Van Soest PJ, Sniffen CJ. A net carbohydrate and protein system for evaluating cattle diets: I. Ruminal fermentation. J. Anim. Sci. 1992;70:3551
  59. Sarwar M, Firkins JL, Eastridge ML. Effect of replacing neutral detergent fiber of forage with soyhulls and corn gluten feed for dairy heifers. J. Dairy Sci. 1991;74:1006
  60. Sarwar M, Firkins JL, Eastridge ML. Effects of varying forage and concentrate carbohydrates on nutrient digestibilities and milk production by dairy cows. J. Dairy Sci. 1992;75:1533
  61. SAS/STAT® User's Guide, Release 6.03 Edition. 1988. SAS Inst., Inc., Cary, NC.
  62. Schofield P, Pitt RE, Pell AN. Kinetics of fiber digestion from in vitro gas production. J. Anim. Sci. 1994;72:2980
  63. Sharma BK, Erdman RA, Reeves JB. Rate and extent of in situ digestion of medium and high quality alfalfa and orchardgrass neutral detergent fiber as determined by extended periods of incubation time. J. Dairy Sci. 1988;71:3509
  64. Shriver BJ, Hoover WH, Sargent JP, Crawford RJ, Thayne WV. Fermentation of a high concentrate diet as affected by ruminal pH and digesta flow. J. Dairy Sci. 1986;69:413
  65. Sievert SJ, Shaver RD. Carbohydrate and Aspergillus oryzae effects on intake, digestion, and milk production by dairy cows. J. Dairy Sci. 1993;76:245
  66. Sievert SJ, Shaver RD. Effect of nonfiber carbohydrate level and Aspergillus oryzae fermentation extract on intake, digestion, and milk production in lactating dairy cows. J. Anim. Sci. 1993;71:1032
  67. Sniffen CJ, Beverly RW, Mooney CS, Roe MB, Skidmore AL, Black JR. Nutrient requirements versus supply in the dairy cow: strategies to account for variability. J. Dairy Sci. 1993;76:3160
  68. Staples CR, Davis CL, McCoy GC, Clark JH. Feeding value of wet corn gluten feed for lactating dairy cows. J. Dairy Sci. 1984;67:1214
  69. Stensig T, Weisbjerg MR, Hvelplund T. Estimation of ruminal digestibility of NDF from in sacco degradation and rumen factional outflow rate. Acta Agric. Scand. A, Anim. Sci. 1994;44:96
  70. Stern MD, Varga GA, Clark JH, Firkins JL, Huber JT, Palmquist DL. Evaluation of chemical and physical properties of feeds that affect protein metabolism in the rumen. J. Dairy Sci. 1994;77:2762
  71. Stern MD, Zeimer CJ. By-product feeds as energy sources for ruminants. Prof. Anim. Sci. 1995;11:51
  72. Stokes SR, Hoover WH, Miller TK, Blauweikel R. Ruminal digestion and microbial utilization of diets varying in type of carbohydrate and protein. J. Dairy Sci. 1991;74:871
  73. Swain SM, Armentano LE. Quantitative evaluation of fiber from nonforage sources used to replace alfalfa silage. J. Dairy Sci. 1994;77:2318
  74. Torrent J, Johnson DE, Kujawa MA. Co-product fiber digestibility: kinetic and in vivo assessment. J. Anim. Sci. 1994;72:790
  75. Trabalza Marinucci M, Dehority BA, Loerch SC. In vitro and in vivo studies of factors affecting digestion of feeds in synthetic bags. J. Anim. Sci. 1992;70:296
  76. Tyrrell HR, Moe PW. Effect of intake on digestive efficiency. J. Dairy Sci. 1975;58:1151
  77. Udén P. The influence of leaf and stem particle size in vitro and of sample size in sacco on neutral detergent fiber fermentation kinetics. Anim. Feed Sci. Technol. 1992;37:85
  78. van Milgen J, Berger LL, Murphy MR. Fractionation of substrate as an intrinsic characteristic of feedstuffs fed to ruminants. J. Dairy Sci. 1992;75:124
  79. van Milgen J, Berger LL, Murphy MR. An integrated, dynamic model of feed hydration and digestion, and subsequent bacterial mass accumulation in the rumen. Br. J. Nutr. 1993;70:471
  80. van Milgen J, Berger LL, Murphy MR. Digestion kinetics of alfalfa and wheat straw assuming heterogeneity of the potentially digestible fraction. J. Anim. Sci. 1993;71:1917
  81. van Milgen J, Murphy MR, Berger LL. A compartmental model to analyze ruminal digestion. J. Dairy Sci. 1991;74:2515
  82. van Vuuren AM, van der Koelen CJ, Vroons-de Bruin J. Ryegrass versus corn starch or beet pulp fiber diets effects on digestion and intestinal amino acids in dairy cows. J. Dairy Sci. 1993;76:2692
  83. Varel VH, Kreikemeier KK. Technical note: comparison of in vitro and in situ digestibility methods. J. Anim. Sci. 1995;73:578
  84. Varga GA, Hoover WH. Rate and extent of neutral detergent fiber degradation of feedstuffs in situ. J. Dairy Sci. 1983;66:2109
  85. Varga GA, Whitsel TJ. Effect of nonstructural to structural carbohydrate ratio on rate and extent of nutrient utilization in situ. Anim. Feed Sci. Technol. 1991;32:275
  86. Wagner KM, Firkins JL, Eastridge ML, Hull BL. Replacement of corn silage with wheat middlings and calcium chloride or sodium bicarbonate for lactating dairy cows. J. Dairy Sci. 1993;76:564
  87. Wanderley RC, Huber JT, Wu Z, Pessarakli M, Fontes C. Influence of microbial colonization of feed particles on determination of nitrogen degradability by in situ incubation. J. Anim. Sci. 1993;71:3073
  88. Weidner SJ, Grant RJ. Soyhulls as a replacement for forage fiber in diets for lactating dairy cows. J. Dairy Sci. 1994;77:513
  89. Weidner SJ, Grant RJ. Altered ruminal mat consistency by high percentages of soybean hulls fed to lactating dairy cows. J. Dairy Sci. 1994;77:522
  90. Weiss WP, Conrad HR, St. Pierre NR. A theoretically-based model for predicting total digestible nutrient values of forages and concentrates. Anim. Feed Sci. Technol. 1992;39:95
  91. Weiss WP, Erickson DO, Erickson GM, Fisher GR. Barley distillers grains as a protein supplement for dairy cows. J. Dairy Sci. 1989;72:980
  92. Weiss WP, Fisher GR, Erickson GM. Effect of source of neutral detergent fiber and starch on nutrient utilization by dairy cows. J. Dairy Sci. 1989;72:2308
  93. Woodford ST, Murphy MR. Effect of forage physical form on chewing activity, dry matter intake, and rumen function of dairy cows in early lactation. J. Dairy Sci. 1988;71:674

PII: S0022-0302(97)76072-7

doi:10.3168/jds.S0022-0302(97)76072-7

Journal of Dairy Science
Volume 80, Issue 7 , Pages 1426-1437, July 1997

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