Seroconversion to bovine viral diarrhoea virus and infectious bovine rhinotracheitis virus in dairy herds of Michoacan, Mexico

2009 ◽  
Vol 42 (2) ◽  
pp. 233-238 ◽  
Author(s):  
José C. Segura-Correa ◽  
José L. Solorio-Rivera ◽  
Laura G. Sánchez-Gil
Keyword(s):  
Bovine Viral Diarrhoea Virus ◽  
Dairy Herds ◽  
Bovine Viral Diarrhoea ◽  
Infectious Bovine Rhinotracheitis ◽  
Diarrhoea Virus ◽  
Infectious Bovine Rhinotracheitis Virus

Survey of nine abortifacient infectious agents in aborted bovine fetuses from dairy farms in Beijing, China, by PCR

2012 ◽  
Vol 60 (1) ◽  
pp. 83-92 ◽  
Author(s):  
Na Yang ◽  
Xia Cui ◽  
Weifeng Qian ◽  
Shanshan Yu ◽  
Qun Liu
Keyword(s):  
Neospora Caninum ◽  
Bovine Viral Diarrhoea Virus ◽  
Economic Losses ◽  
Dairy Herds ◽  
Infectious Agents ◽  
Infectious Bovine Rhinotracheitis ◽  
Diarrhoea Virus ◽  
Bovine Fetuses ◽  
Bovine Abortion ◽  
Infectious Bovine Rhinotracheitis Virus

Abortion in dairy cattle causes considerable economic losses to the dairy industry. Aborted fetuses and samples from the corresponding aborting dams from 12 dairy herds in Beijing were tested for 9 abortifacient infectious pathogens by PCR between 2008 and 2010. From a total of 80 abortion cases collected during this period, infectious agents were detected in 45 (56.3%) cases, 22 (48.9%) of which represented co-infections with two or three infectious agents. The detected pathogens included infectious bovine rhinotracheitis virus (36.3%) andNeospora caninum(31.3%), followed by bovine viral diarrhoea virus (7.5%),Brucella abortus(6.3%),Tritrichomonas foetus(5%) andToxoplasma gondii(1.3%).Campylobacter fetus, Coxiella burnetiiandChlamydophila psittaciwere not detected in any abortion case. Findings from this study indicated that infectious bovine rhinotracheitis virus andNeospora caninumwere the main potential causes of abortions in Beijing dairy herds, whereas the bacterial pathogens were not, in contrast to reports from other countries. This is the first study to test nine abortifacient infectious agents by PCR at the same time, and it is also the first time to report the involvement of a variety of infectious agents in bovine abortion cases in China.

Bulk tank milk somatic cell counts in dairy herds with different bovine viral diarrhoea virus status in Poland

2014 ◽  
Vol 116 (1-2) ◽  
pp. 183-187
Author(s):  
Jolanta G. Rola ◽  
Magdalena Larska ◽  
Monika Grzeszuk ◽  
Lukasz Bocian ◽  
Aleksandra Kuta ◽  
...  
Keyword(s):  
Somatic Cell ◽  
Bovine Viral Diarrhoea Virus ◽  
Dairy Herds ◽  
Bovine Viral Diarrhoea ◽  
Bulk Tank Milk ◽  
Somatic Cell Counts ◽  
Cell Counts ◽  
Diarrhoea Virus ◽  
Bulk Tank

A scoring system for risk assessment of the introduction and spread of bovine viral diarrhoea virus in dairy herds in Northern Italy

2008 ◽  
Vol 177 (2) ◽  
pp. 236-241 ◽  
Author(s):  
Camilla Luzzago ◽  
Michela Frigerio ◽  
Renata Piccinini ◽  
Valentina Daprà ◽  
Alfonso Zecconi
Keyword(s):  
Risk Assessment ◽  
Scoring System ◽  
Bovine Viral Diarrhoea Virus ◽  
Northern Italy ◽  
Dairy Herds ◽  
Bovine Viral Diarrhoea ◽  
Diarrhoea Virus
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