| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
U.S. Department of Agriculture,6, Miles City, MT 59301 and New Mexico State University Las Cruces 88003
Abstract
Four independent digestion trials with four diets were conducted using four Hereford x Angus steers per trial to evaluate the ability of four internal markers to predict in vivo dry matter digestibility. Diets were 1) cubed alfalfa hay; 2) tall fescue (pre-boot stage, harvested .5 h before feeding); 3) tall wheatgrass hay plus .9 kg soybean meal (SBM)/d and 4) prairie hay. Forages were fed once daily at 90% of ad libitum intake. Separation of internal markers was accomplished by 1) 6-d in vitro fermentation followed by acid detergent fiber (ADF) extraction (IVADF); 2) 6-d in vitro fermentation followed by neutral detergent fiber extraction (IVNDF); 3) ADF extraction followed by 3-h digestion with 72% H2SO4 (ADL) and 4) ADF extraction followed by 10-d cellulase incubation (ADFIC). Dry matter digestibility (DMD) was calculated from the feed:feces ratio of each internal marker and compared with in vivo apparent DMD within each diet. When compared within both cubed alfalfa hay and tall wheatgrass/SBM, digestion coefficients from IVADF ratio and IVNDF ratio were similar (P>.10) to in vivo coefficients. However, digestion coefficients from ADL ratio and ADFIC differed (P<.01) from in vivo apparent digestibilities. When compared within tall fescue and prairie hay, digestion coefficients from all internal markers evaluated were different (P<.01) from in vivo digestion coefficients. Fecal marker recoveries explained observed differences between in vivo DMD and DMD from marker ratios. The relationship between in vivo DMD and DMD determined by IVADF and IVNDF ratio was highly variable. Caution should be exercised in using IVADF and IVNDF as internal markers, particularly with immature, freshly harvested or grazed forage. Acid detergent lignin and ADFIC were least acceptable for use as internal markers in all diets evaluated.
1 Publication has been approved by the Director of the Montana Agr. Exp. Sta., Journal Ser. No. J-1781.
2 Present address: Dept. of Anim. Sci. and Ind., Call Hall, Kansas State Univ., Manhattan 66506.
3 Address reprint requests to this author.
4 Fort Keogh Livestock and Range Res. Lab., USDA-ARS, Route 1, Box 2021, Miles City, MT 59301.
5 Dept. of Anim. and Range Sci., Box 3-I, New Mexico State Univ., Las Cruces 88003.
6 Agr. Res. Serv., Fort Keogh Livestock and Range Res. Lab. with Montana Agr. Exp. Sta. cooperating.
This article has been cited by other articles:
|
|
 |
|
  J. A. Voelker Linton and M. S. Allen Nutrient Demand Interacts with Forage Family to Affect Intake and Digestion Responses in Dairy Cows J Dairy Sci, July 1, 2008; 91(7): 2694 - 2701. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
K. M. Cooke, J. K. Bernard, and J. W. West Performance of Dairy Cows Fed Annual Ryegrass Silage and Corn Silage with Steam-Flaked or Ground Corn J Dairy Sci, June 1, 2008; 91(6): 2417 - 2422. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 F. H. M. Chizzotti, O. G. Pereira, L. O. Tedeschi, S. C. Valadares Filho, M. L. Chizzotti, M. I. Leao, and D. H. Pereira Effects of dietary nonprotein nitrogen on performance, digestibility, ruminal characteristics, and microbial efficiency in crossbred steers J Anim Sci, May 1, 2008; 86(5): 1173 - 1181. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
L. O. Chow, V. S. Baron, R. Corbett, and M. Oba Effects of Planting Date on Fiber Digestibility of Whole-Crop Barley and Productivity of Lactating Dairy Cows J Dairy Sci, April 1, 2008; 91(4): 1534 - 1543. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
G. A. Broderick, M. J. Stevenson, R. A. Patton, N. E. Lobos, and J. J. Olmos Colmenero Effect of Supplementing Rumen-Protected Methionine on Production and Nitrogen Excretion in Lactating Dairy Cows J Dairy Sci, March 1, 2008; 91(3): 1092 - 1102. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. A. Voelker Linton and M. S. Allen Nutrient Demand Affects Ruminal Digestion Responses to a Change in Dietary Forage Concentration J Dairy Sci, October 1, 2007; 90(10): 4770 - 4779. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. J. Krizsan, G. A. Broderick, R. E. Muck, C. Promkot, S. Colombini, and A. T. Randby Effect of Alfalfa Silage Storage Structure and Roasting Corn on Production and Ruminal Metabolism of Lactating Dairy Cows J Dairy Sci, October 1, 2007; 90(10): 4793 - 4804. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
B. J. Bradford and M. S. Allen Depression in Feed Intake by a Highly Fermentable Diet Is Related to Plasma Insulin Concentration and Insulin Response to Glucose Infusion J Dairy Sci, August 1, 2007; 90(8): 3838 - 3845. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
C. Silveira, M. Oba, K. A. Beauchemin, and J. Helm Effect of Grains Differing in Expected Ruminal Fermentability on the Productivity of Lactating Dairy Cows J Dairy Sci, June 1, 2007; 90(6): 2852 - 2859. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
D. C. da Silva, G. T. Santos, A. F. Branco, J. C. Damasceno, R. Kazama, M. Matsushita, J. A. Horst, W. B. R. dos Santos, and H. V. Petit Production Performance and Milk Composition of Dairy Cows Fed Whole or Ground Flaxseed With or Without Monensin J Dairy Sci, June 1, 2007; 90(6): 2928 - 2936. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
G. A. Broderick, A. F. Brito, and J. J. O. Colmenero Effects of Feeding Formate-Treated Alfalfa Silage or Red Clover Silage on the Production of Lactating Dairy Cows J Dairy Sci, March 1, 2007; 90(3): 1378 - 1391. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
K. M. Cooke, J. K. Bernard, and J. W. West Performance of Lactating Dairy Cows Fed Whole Cottonseed Coated with Gelatinized Starch plus Urea or Yeast Culture J Dairy Sci, January 1, 2007; 90(1): 360 - 364. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. F. Brito and G. A. Broderick Effect of varying dietary ratios of alfalfa silage to corn silage on production and nitrogen utilization in lactating dairy cows. J Dairy Sci, October 1, 2006; 89(10): 3924 - 3938. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. M. Reynal and G. A. Broderick Effect of Dietary Level of Rumen-Degraded Protein on Production and Nitrogen Metabolism in Lactating Dairy Cows J Dairy Sci, November 1, 2005; 88(11): 4045 - 4064. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
K. M. Cooke and J. K. Bernard Effect of Length of Cut and Kernel Processing on Use of Corn Silage by Lactating Dairy Cows J Dairy Sci, January 1, 2005; 88(1): 310 - 316. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
G. A. Broderick and W. J. Radloff Effect of Molasses Supplementation on the Production of Lactating Dairy Cows Fed Diets Based on Alfalfa and Corn Silage J Dairy Sci, September 1, 2004; 87(9): 2997 - 3009. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. K. Bernard, J. W. West, D. S. Trammell, and G. H. Cross Influence of Corn Variety and Cutting Height on Nutritive Value of Silage Fed to Lactating Dairy Cows J Dairy Sci, July 1, 2004; 87(7): 2172 - 2176. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
V. R. Moreira, L. D. Satter, and B. Harding Comparison of Conventional Linted Cottonseed and Mechanically Delinted Cottonseed in Diets for Dairy Cows J Dairy Sci, January 1, 2004; 87(1): 131 - 138. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. Oba and M. S. Allen Dose-Response Effects of Intrauminal Infusion of Propionate on Feeding Behavior of Lactating Cows in Early or Midlactation J Dairy Sci, September 1, 2003; 86(9): 2922 - 2931. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
G. A. Broderick Effects of Varying Dietary Protein and Energy Levels on the Production of Lactating Dairy Cows J Dairy Sci, April 1, 2003; 86(4): 1370 - 1381. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 M. Oba and M. S. Allen Extent of Hypophagia Caused by Propionate Infusion Is Related to Plasma Glucose Concentration in Lactating Dairy Cows J. Nutr., April 1, 2003; 133(4): 1105 - 1112. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. A. Voelker, G. M. Burato, and M. S. Allen Effects of Pretrial Milk Yield on Responses of Feed Intake, Digestion, and Production to Dietary Forage Concentration J Dairy Sci, October 1, 2002; 85(10): 2650 - 2661. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. K. Bernard, J. W. West, and D. S. Trammell Effect of Replacing Corn Silage with Annual Ryegrass Silage on Nutrient Digestibility, Intake, and Milk Yield for Lactating Dairy Cows J Dairy Sci, September 1, 2002; 85(9): 2277 - 2282. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
G. A. Broderick, R. G. Koegel, R. P. Walgenbach, and T. J. Kraus Ryegrass or Alfalfa Silage as the Dietary Forage for Lactating Dairy Cows J Dairy Sci, July 1, 2002; 85(7): 1894 - 1901. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
