| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
Department of Animal Science, University of Manitoba, Winnipeg, Canada R3T 2N2
Corresponding author: J. C. Plaizier; e-mail: plaizier{at}ms.umanitoba.ca.
Subacute ruminal acidosis (SARA) was induced in 3 rumen fistulated Jersey steers by offering them different combinations of wheat-barley pellets and chopped alfalfa hay. Steers were offered 4, 5, and 6 kg/d of pelleted concentrate and 6, 5, and 4 kg/d of chopped alfalfa hay for diets 1, 2, and 3, respectively, during 5-d treatment periods and were fed chopped alfalfa hay between treatment periods. Inducing SARA increased blood concentrations of haptoglobin and serum amyloid-A. Dry matter intake of concentrate and hay decreased from d 1 to 5 in each period. Subacute ruminal acidosis was induced in all steers during d 4 and 5 when concentrate was fed, with ruminal pH remaining below 5.6 for an average of 187 and 174 min/d on these days. Lipopolysaccharide concentration increased significantly during periods of grain feeding compared with times when only hay was fed. Inducing SARA by feeding wheat-barley pellets activated a systemic inflammatory response in the steers.
Key Words: steers • subacute ruminal acidosis • ruminal pH • acute phase response
Abbreviation key: Hp = haptoglobin, LAL = Limulus amebocyte lysate, SAA = serum amyloid-A, SARA = subacute ruminal acidosis.
This article has been cited by other articles:
|
|
 |
|
  E. Khafipour, S. Li, J. C. Plaizier, and D. O. Krause Rumen Microbiome Composition Determined Using Two Nutritional Models of Subacute Ruminal Acidosis Appl. Envir. Microbiol., November 15, 2009; 75(22): 7115 - 7124. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 E. Khafipour, D. O. Krause, and J. C. Plaizier Alfalfa pellet-induced subacute ruminal acidosis in dairy cows increases bacterial endotoxin in the rumen without causing inflammation J Dairy Sci, April 1, 2009; 92(4): 1712 - 1724. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
E. Khafipour, D. O. Krause, and J. C. Plaizier A grain-based subacute ruminal acidosis challenge causes translocation of lipopolysaccharide and triggers inflammation J Dairy Sci, March 1, 2009; 92(3): 1060 - 1070. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
O. AlZahal, M. M. Or-Rashid, S. L. Greenwood, M. S. Douglas, and B. W. McBride The effect of dietary fiber level on milk fat concentration and fatty acid profile of cows fed diets containing low levels of polyunsaturated fatty acids J Dairy Sci, March 1, 2009; 92(3): 1108 - 1116. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. K. Bhandari, S. Li, K. H. Ominski, K. M. Wittenberg, and J. C. Plaizier Effects of the Chop Lengths of Alfalfa Silage and Oat Silage on Feed Intake, Milk Production, Feeding Behavior, and Rumen Fermentation of Dairy Cows J Dairy Sci, May 1, 2008; 91(5): 1942 - 1958. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
Q. Zebeli, J. Dijkstra, M. Tafaj, H. Steingass, B. N. Ametaj, and W. Drochner Modeling the Adequacy of Dietary Fiber in Dairy Cows Based on the Responses of Ruminal pH and Milk Fat Production to Composition of the Diet J Dairy Sci, May 1, 2008; 91(5): 2046 - 2066. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
T. G. Nagaraja and E. C. Titgemeyer Ruminal Acidosis in Beef Cattle: The Current Microbiological and Nutritional Outlook J Dairy Sci, June 1, 2007; 90(13_suppl): E17 - E38. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. K. Bhandari, K. H. Ominski, K. M. Wittenberg, and J. C. Plaizier Effects of Chop Length of Alfalfa and Corn Silage on Milk Production and Rumen Fermentation of Dairy Cows J Dairy Sci, May 1, 2007; 90(5): 2355 - 2366. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
G. N. Gozho, D. O. Krause, and J. C. Plaizier Ruminal Lipopolysaccharide Concentration and Inflammatory Response During Grain-Induced Subacute Ruminal Acidosis in Dairy Cows J Dairy Sci, February 1, 2007; 90(2): 856 - 866. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 J. J. Loor, H. M. Dann, N. A. J. Guretzky, R. E. Everts, R. Oliveira, C. A. Green, N. B. Litherland, S. L. Rodriguez-Zas, H. A. Lewin, and J. K. Drackley Plane of nutrition prepartum alters hepatic gene expression and function in dairy cows as assessed by longitudinal transcript and metabolic profiling Physiol Genomics, January 12, 2007; 27(1): 29 - 41. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
G. B. Penner, K. A. Beauchemin, and T. Mutsvangwa Severity of Ruminal Acidosis in Primiparous Holstein Cows During the Periparturient Period J Dairy Sci, January 1, 2007; 90(1): 365 - 375. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 D. G. V. Emmanuel, A. Jafari, K. A. Beauchemin, J. A. Z. Leedle, and B. N. Ametaj Feeding live cultures of Enterococcus faecium and Saccharomyces cerevisiae induces an inflammatory response in feedlot steers J Anim Sci, January 1, 2007; 85(1): 233 - 239. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
G. N. Gozho, D. O. Krause, and J. C. Plaizier Rumen lipopolysaccharide and inflammation during grain adaptation and subacute ruminal acidosis in steers. J Dairy Sci, November 1, 2006; 89(11): 4404 - 4413. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
