Frank Garry DVM, MS, ACVIM Dip
Julie Severidt DVM
Craig McConnel DVM
Research has shown that adult dairy cow mortality rates have been increasing over the past two decades. One survey showed a mortality rate of 1.8% in 1988 whereas more recent surveys done through the USDA have shown the rates to be 4.8%. DHI reports even higher rates in the west ranging from 4 to 12%.Until this area is further looked into we can only speculate at why there is an increase in mortality rates. There could be a new disease in dairy cattle, genetic, nutritional, environmental or managerial factors that lead to this increase.
McConnel CS, Garry FB, Hill AE, Lombard JE, Gould DH. Conceptual modeling of postmortem evaluation findings to describe dairy cow deaths. J. Dairy Sci. 2010; 93 (1) 373-386.
McConnel CS, Garry FB, Lombard JE, Kidd JA, Hill AE, Gould DH. A necropsy-based descriptive study of dairy cow deaths on a Colorado dairy. J. Dairy Sci. 2009; 92 (5) 1954-1962.
McConnel CS, Lombard JE, Wagner BA, Garry FB. Evaluation of factors associated with increased dairy cow mortality on United States dairy operations. J. Dairy Sci. 2008; 91 (4) 1423-1432.
Descriptive Epidemiology of Adult Dairy Cow Mortalities
JA. Severidt, FB. Garry, DH.Gould, JR. Wenz, JE. Lombard
Colorado State University, Fort Collins, CO, USA (submitted for 2006 meeting and accepted)
Descriptive Epidemiology of Adult Dairy Cow Mortalities on a Modern Colorado Dairy
JA. Severidt1, FB. Garry1, DH.Gould1, JR. Wenz1, JE. Lombard1,2
1 Integrated Livestock Management, Colorado State University, Fort Collins, CO, USA
2 USDA: Animal and Plant Health Inspection Service: Veterinary Services, Centers for
Epidemiology and Animal Health, Fort Collins, CO (submitted for 2006 meeting)
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