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Timely Topic
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Prepare For Calving Season
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Cattle producers can anticipate the most likely and most costly hazards to
their cows and calves at calving time, and can use this knowledge to plan
for their prevention. Minimizing the risk of these hazards requires long-
and near-term planning. Calving problems may occur because of factors of
the calf or the dam. Planning ahead for calving problems and close
monitoring of the herd during calving can minimize the likelihood and/or
cost of dystocia. Environmental conditions such as weather or physical
hazards in the calving area are also important sources of injury to cows
and calves. Planning to calve during favorable weather seasons and
monitoring the environment for dangerous conditions minimizes the risk of
these hazards.
A common cause of sickness or death of baby calves is diarrhea.
Understanding the complex interactions that cause calf diarrhea is the
basis for developing strategies for disease control and prevention. The
common pathogens of calf diarrhea are common to most cattle herds, and it
is unlikely that cattle could be made biosecure from these agents.
Managers of extensive beef cattle systems have few opportunities to
improve rates of colostrum uptake and absorption, and vaccines are not
always protective. Colostral immunity wanes, making calves
age-susceptible and age-infective. Each calf serves as growth media for
pathogen production; amplifying the dose-load of pathogen it received and
resulting in high calf-infectivity and widespread environmental
contamination over time in a calving season. For these reasons it is
logical to apply biocontainment strategies to prevent effective
transmission of the pathogens causing diarrhea. Cattle management systems
based on an understanding of infectious disease dynamics have successfully
reduced sickness and death due to calf diarrhea. [January 8th, 2008]
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Dr. David Smith, Associate Professor of Veterinary Science
Veterinary and Bilogical Sciences, University of Nebraska - Lincoln, Lincoln, NE
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