Characterization of livestock herds in extensive agricultural settings in southwest Texas

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Title: Characterization of livestock herds in extensive agricultural settings in southwest Texas
Author: Dominguez, Brandon James
Abstract: Because of an ever -increasing threat of foreign animal disease outbreaks in the United States , there is a desire to develop strategies to prevent the occurrence of a foreign animal disease and control an outbreak if it does occur . Infectious disease models have been developed and are being used to determine reasonable mitigation strategies . However , little information is available concerning premises characteristics and movement of animals in extensively managed livestock areas . Hence adaptation of these models to areas where there is low livestock density is not easy . We collected empirical data , via mail out surveys , from an extensively managed livestock area . This will aid in improving the results of infectious disease models in these areas . In contrast to the intensively managed livestock that have previously been modeled , this study has shown that in areas of low livestock density , multiple livestock types often are managed on the same premises . Direct contacts , facilitated through the planned movement of animals , appear to have a greater seasonality in extensively managed areas as compared to intensively managed areas . Furthermore , wildlife contacts are likely and of potential importance . The results of this study add to the knowledge base used to model the spread of infectious disease in extensively managed livestock populations . Seasonal changes in animal densities and contact rates may impact the results of the models . Additionally , the effect of multiple livestock types on premises should be considered when the expected spread of disease is modeled in extensive livestock areas .
URI: http : / /hdl .handle .net /1969 .1 /ETD -TAMU -1302
Date: 2009-05-15

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Characterization of livestock herds in extensive agricultural settings in southwest Texas. Available electronically from http : / /hdl .handle .net /1969 .1 /ETD -TAMU -1302 .

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