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

dc.contributor.authorFox, Jeffrie Thomas
dc.date.accessioned2008-08-08T20:34:53Z
dc.date.available2008-08-08T20:34:53Z
dc.date.graduationmonthAugust
dc.date.issued2008-08-08T20:34:53Z
dc.date.published2008
dc.description.abstractTwo 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.
dc.description.advisorLarry C. Hollis
dc.description.advisorMark F. Spire
dc.description.degreeMaster of Science
dc.description.departmentDepartment of Diagnostic Medicine/Pathobiology
dc.description.levelMasters
dc.description.sponsorshipPfizer Animal Health 235 East 42nd Street Building 150 MS 40-09 New York City, NY 10017
dc.identifier.urihttp://hdl.handle.net/2097/908
dc.language.isoen_US
dc.publisherKansas State University
dc.rights© the author. This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. For other uses you need to obtain permission from the rights-holder(s).
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectNear Infrared Spectroscopy
dc.subjectBovine Respiratory Disease
dc.subjectCattle
dc.subject.umiAgriculture, Animal Culture and Nutrition (0475)
dc.subject.umiAgriculture, Animal Pathology (0476)
dc.titleNear infrared spectroscopy: a potential method to detect undifferentiated bovine respiratory disease
dc.typeThesis

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