Bovine%20Viral%20Diarrhea%20(BVD)

1
Bovine Viral Diarrhea(BVD)

• Dan Laufenberg
• Amanda Wilding
• Chuck Nora

2
The Case

• 25 Original Angus Cattle
• 5 abortions,1 stillborn,2 ataxic, 2 early
  neonatal deaths
• 1 new purchased bred heifer brought in that died
  with high fever, diarrhea w/blood, sores in mouth

3
Herd

• Cows became anorexic and had diarrhea after
  introduction of heifer
• Cows were bought at sale and vaccinated by Mr.
  Lang himself without previous records

4
Timeline of Events
5
Mr. Lang Vaccination Program

• For Herd
• Killed BVD
• Lepto
• 7-way Clostridia
• Modified-live IBR/PI3

• New Heifers Pre-Sale Vacc
• IBR/BVD/BRSV/PI3
• Blackleg
• Lepto
• Entertoxemia CD

6
Irrelevant Vaccinations/Diseases

• Lepto
• 7-way Clostridia
• Modified-live IBR/PI3IBR/BRSV/PI3
• Entertoxemia CD

7
Symptoms of BVD

• High fever (107-110 F)
• Profuse diarrhea
• Oral ulcers
• Anorexia
• Suppresses all immune function

8
Fetal Symptoms of BVD

• Death of fetus if infected in the first 120 days
  of pregnancy
• Abortion
• Congenital malformations of nervous system and
  eyes blindness and underdeveloped brains
• Skeletal defects
• Fetus does not recognize BVD therefore it is
  unable to fight the virus, resulting in death.
  Cow survives if vaccinated.

9
Conclusions

• BVD would explain the abnormal abortions in Mr.
  Langs herd.
• The new heifer must have been infected with BVD
  before her vaccinations (rendering them useless.)
• The herd was improperly vaccinated. A necessary
  3-week booster was not administered.

10
What Mr. Lang Should Do

• Segregate all new animals
• Follow vaccination instructions in the future
• Promptly remove fetuses and placentas as they may
  carry the disease
• Test animals cull those with 4x elevated titers
  30 days apart

11
Resources

• http//www.clemson.edu/edisto/beef-db/bc-7005.htm
• www.edis.ifas.ufl.edu/vm023
• http//www.pfizerah.com