Type of Document Master's Thesis Author Kanistanon, Kwankate URN etd-926111839751071 Title Correlation of Environmental Temperature, Precipitation, and Humidity with Salmonella Culture Results from Cattle in Virginia Degree Master of Science Department Large Animal Clinical Sciences Advisory Committee
Advisor Name Title Kevin D. Pelzer Committee Co-Chair Lorin D. Warnick Committee Co-Chair Jerry R. Roberson none Keywords
- salmonella
- cattle
- weather
Date of Defense 1997-03-11 Availability unrestricted Abstract
Records of bovine samples
submitted for salmonella cultures at
four regional diagnostic laboratories
in the state of Virginia were used to
investigate the association of weather
conditions and the diagnosis of
salmonellosis in cattle. Spearmanšs
correlation coefficients were
calculated for the correlations
between the monthly number of
samples positive for salmonella
culture and weather parameters:
temperature, precipitation, and
relative humidity. Significant
correlation coefficients between the
monthly average temperature and the
monthly number of positive samples
were found to be negative in one
laboratory (rs= -0.38, p=0.03) and
positive in one laboratory (rs=0.30,
p=0.02). The latter correlation
coefficient was found between the
monthly average temperature and the
monthly number of positive samples
the following month. The same
laboratories that had significant
correlation of the monthly number of
positive samples and the monthly
average temperature also had
significant correlation with the
monthly average relative humidity
(rs= -0.39, p=0.03 and rs=0.37,
p=0.004). The monthly average
relative humidity was more highly
correlated to the number of positive
samples reported in the same month
for both laboratories that had
significant correlation coefficients.
None of the correlations between the
monthly precipitation and the
monthly number of positive samples
were significant (p>0.05). The
inconsistent directions of correlation
coefficients need to be investigated
further to find a reason for the
discrepancy between regions of the
state.
Files
Filename Size Approximate Download Time (Hours:Minutes:Seconds)
28.8 Modem 56K Modem ISDN (64 Kb) ISDN (128 Kb) Higher-speed Access ETD.PDF 374.65 Kb 00:01:44 00:00:53 00:00:46 00:00:23 00:00:01
|
|
If you have questions or technical problems, please Contact DLA.
