Using vaginal temperature to evaluate heat stress in dairy cattle

dc.citation.epage11en_US
dc.citation.spage9en_US
dc.contributor.authorCvetkovic, B.
dc.contributor.authorSmith, John F., 1962-
dc.contributor.authorHarner, Joseph P.
dc.contributor.authorBrouk, Michael J.
dc.contributor.authoreidmbrouken_US
dc.contributor.authoreidjfsmithen_US
dc.contributor.authoreidjharneren_US
dc.date.accessioned2010-12-03T21:44:19Z
dc.date.available2010-12-03T21:44:19Z
dc.date.issued2010-12-03
dc.date.published2005en_US
dc.descriptionDairy Research, 2005 is known as Dairy Day, 2005en
dc.description.abstractA rise in body temperature is a signal that heat stress has exceeded the heat-exchange capacity of the dairy cow. Previous studies have shown a strong positive correlation between vaginal temperature and respiration rate, demonstrating a stress response to an increased body temperature. Vaginal temperature was collected by using temperature probes attached to an external data logger. Although these devices were very sensitive to changes in body temperature of cows housed in tie-stalls, the external data logger presented a significant application challenge for freeranging animals housed in freestalls. A data logger was acquired that would be completely indwelling in the vagina. The U12 stainless steel model (Onset Computer Corporation, Pocasset, MA) was 0.5 × 4 inches and weighed about 2.6 oz. It was retained in the vagina with foam and a blank CIDR insert. These devices were used continuously to measure and record body temperature in freeranging cattle for 5 to 7 days. Vaginal temperature was recorded at 1-minute intervals and then averaged into 5-minute blocks. Data were then graphed over a 24-hour period. Vaginal temperature increased with activity and amount of heat stress. Effective heatabatement systems were shown to reduce vaginal temperature. On commercial farms, data were used to identify where heat abatement should be improved. Heat stress issues with milking parlor holding pens were easily identified. Producers and industry personnel could use data loggers to evaluate heat stress and the effectiveness of heat-abatement systems on free-ranging dairy cattle. Devices also could be used to validate the effectiveness of modifications to heat-abatement systems identified by the initial evaluation.en_US
dc.description.conferenceDairy Day, 2005, Kansas State University, Manhattan, KS, 2005
dc.identifier.urihttp://hdl.handle.net/2097/6792
dc.publisherKansas State University. Agricultural Experiment Station and Cooperative Extension Serviceen_US
dc.relation.isPartOfDairy Day, 2005en_US
dc.relation.isPartOfKansas Agricultural Experiment Station contribution; no. 06-46-Sen_US
dc.relation.isPartOfReport of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 963en_US
dc.subjectDairyen_US
dc.subjectCow comforten_US
dc.subjectCow coolingen_US
dc.subjectHeat abatementen_US
dc.titleUsing vaginal temperature to evaluate heat stress in dairy cattleen_US
dc.typeConference paperen_US

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