Near infrared spectroscopy: a potential method to detect undifferentiated bovine respiratory disease

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dc.contributor.author Fox, Jeffrie Thomas
dc.date.accessioned 2008-08-08T20:34:53Z
dc.date.available 2008-08-08T20:34:53Z
dc.date.issued 2008-08-08T20:34:53Z
dc.identifier.uri http://hdl.handle.net/2097/908
dc.description.abstract Two studies were undertaken to evaluate the use of Near Infrared Spectroscopy (NIRS) to determine arterial oxygen saturation (StO[subscript]2) in cattle with naturally-occurring Undifferentiated Bovine Respiratory Disease (UBRD) and experimentally-induced UBRD utilizing Mannheimia haemolytica. The first study was a natural infection model utilizing 679 beef heifers weighing approximately 227 kg (500 pounds) originating from a southeastern U.S. salebarn. Heifers were evaluated for UBRD upon feedlot arrival, at revaccination, at day 35 on feed, at re-implant time, and two weeks prior to shipment for slaughter. Animals deemed to have UBRD were treated for UBRD and data was collected for 5 days following treatment, while a comparable healthy cohort was also evaluated at the time of treatment. There was a trend for NIRS to be able to predict the incidence of subsequent UBRD when cattle were evaluated on arrival (p=0.0552). However, the ability to detect UBRD in clinically ill cattle was not significantly different (p>0.1690) when compared to healthy cohorts in this model. When carcass characteristics were evaluated at each time point, NIRS StO[subscript]2 values were able to differentiate between yield grades of animals with UBRD and healthy cohorts when evaluated at revaccination, day 35, re-implant, and pre-shipping (p<0.0199). NIRS tended to be able to differentiate yield grades at initial processing (p=0.0513). StO[subscript]2 was not a predictor of quality grade at any time point (p>0.1023), nor was there any correlation between lung lesions at slaughter and StO[subscript]2 (p>0.2292). The second study involved 12 head of 181 kg (400 pound) heifers which were subjected to an experimental challenge model of Mannheimia haemolytica. Animals were evaluated daily and StO[subscript]2 readings recorded 12 hours pre-inoculation, at inoculation, 6, 12 and 24 hours post inoculation and daily for the next 12 days. While NIRS could not definitively differentiate healthy cohort cattle from challenge cattle (p>0.0713), there were trends toward challenge cattle having lower StO[subscript]2 values than healthy controls. The authors conclude that while these studies did not provide conclusive evidence of the ability of NIRS to detect UBRD, further studies with a machine that is specifically calibrated and designed for use with cattle should be performed. en
dc.description.sponsorship Pfizer Animal Health 235 East 42nd Street Building 150 MS 40-09 New York City, NY 10017 en
dc.language.iso en_US en
dc.publisher Kansas State University en
dc.subject Near Infrared Spectroscopy en
dc.subject Bovine Respiratory Disease en
dc.subject Cattle en
dc.title Near infrared spectroscopy: a potential method to detect undifferentiated bovine respiratory disease en
dc.type Thesis en
dc.description.degree Master of Science en
dc.description.level Masters en
dc.description.department Department of Diagnostic Medicine/Pathobiology en
dc.description.advisor Larry C. Hollis en
dc.description.advisor Mark F. Spire en
dc.subject.umi Agriculture, Animal Culture and Nutrition (0475) en
dc.subject.umi Agriculture, Animal Pathology (0476) en
dc.date.published 2008 en
dc.date.graduationmonth August en


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