| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
1 Department of Animal Science and Animal Health, Royal Veterinary and Agricultural University, Bülowsvej 13, DK-1870 Frederiksberg C, Copenhagen, Denmark
2 Department of Population Medicine and Diagnostic Science, College of Veterinary Medicine, Cornell University Ithaca, NY 14853
The pre- and postdisease interrelationships of energy corrected test day milk yield and body weight of dairy cows caused by mastitis, three reproductive disorders (retained placenta, metritis, cystic ovaries), and seven metabolic disorders (milk fever, ketosis, decreased rumen motility, enteritis, left displaced abomasum, right displaced abomasum, and off feed) were quantified by using mixed models analysis with repeated measures of continuous data. The data were weekly recordings from 4414 lactations collected in three Danish research herds.
High milk yield was a risk factor for ketosis and enteritis. Heavier primiparous cows were more likely to contract mastitis.
Milk yield was decreased for a disease-specific period for all study diseases except cystic ovaries and right displaced abomasum. Metabolic disorders had a detrimental effect on body weight. The highest weight loss (69 kg) was associated with left displaced abomasum. The persistence of the weight loss differed considerably among study diseases. Almost all weight loss occurred up to and including the initial week after diagnosis, which emphasized the detrimental effect of the subclinical stage. However, weekly measured body weight seemed superior to weekly energy corrected test day milk yield for disease detection only for decreased rumen motility and left displaced abomasum. This study demonstrates the importance of the predisease level for accurate estimation of the loss of milk yield and body weight from disease.
Key Words: disease • milk yield • body weight • dairy cows
Submitted on July 6, 1998
Accepted on January 11, 1999
This article has been cited by other articles:
|
|
 |
|
  C. Hagnestam, U. Emanuelson, and B. Berglund Yield Losses Associated with Clinical Mastitis Occurring in Different Weeks of Lactation J Dairy Sci, May 1, 2007; 90(5): 2260 - 2270. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. Ostergaard, M. G. G. Chagunda, N. C. Friggens, T. W. Bennedsgaard, and I. C. Klaas A Stochastic Model Simulating Pathogen-Specific Mastitis Control in a Dairy Herd J Dairy Sci, December 1, 2005; 88(12): 4243 - 4257. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
N. I. Nielsen, N. C. Friggens, M. G. G. Chagunda, and K. L. Ingvartsen Predicting Risk of Ketosis in Dairy Cows Using In-Line Measurements of {beta}-Hydroxybutyrate: A Biological Model J Dairy Sci, July 1, 2005; 88(7): 2441 - 2453. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
A. L. Magliaro and R. S. Kensinger Automatic Cluster Remover Setting Affects Milk Yield and Machine-On Time in Dairy Cows J Dairy Sci, January 1, 2005; 88(1): 148 - 153. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. L. Edwards and P. R. Tozer Using Activity and Milk Yield as Predictors of Fresh Cow Disorders J Dairy Sci, February 1, 2004; 87(2): 524 - 531. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
L. G. Lawson, J. Bruun, T. Coelli, J. F. Agger, and M. Lund Relationships of Efficiency to Reproductive Disorders in Danish Milk Production: A Stochastic Frontier Analysis J Dairy Sci, January 1, 2004; 87(1): 212 - 224. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
T. W. Bennedsgaard, C. Enevoldsen, S. M. Thamsborg, and M. Vaarst Effect of Mastitis Treatment and Somatic Cell Counts on Milk Yield in Danish Organic Dairy Cows J Dairy Sci, October 1, 2003; 86(10): 3174 - 3183. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
