title: Infrared thermography of the udder after experimentally induced Escherichia coli mastitis in cows.
abstract: The study aimed to use infrared thermography (IRT) to evaluate the changes in udder surface temperature after induction of Escherichia coli mastitis in the right hind quarter. Over a time period of 24 h before to 24 h post-inoculation, thermograms of both hind quarters were taken every 2 h to determine maximum (Tmax) and average (Tavg) temperatures. Differences in both maximum and average temperatures (DTmax and DTavg) were calculated, as well as temperature differences between both hind quarters. All cows developed signs of clinical mastitis with a significant increase in DTmax and DTavg with Tmax at 13 h post-inoculation for the (non-infected) left hind quarters. The results demonstrate that detection of mastitis using IRT is possible if the interval between examinations does not exceed 2 h.
authors.affiliation: Clinic for Ruminants with Ambulatory and Herd Health Services, Ludwig-Maximilians-Universität Munich, Sonnenstr. 16, D 85764 Oberschleissheim, Germany. Electronic address: M.Metzner@LMU.de.
authors.forename: Moritz
authors.initials: M
authors.lastname: Metzner
authors.affiliation: Clinic for Ruminants with Ambulatory and Herd Health Services, Ludwig-Maximilians-Universität Munich, Sonnenstr. 16, D 85764 Oberschleissheim, Germany.
authors.forename: Carola
authors.initials: C
authors.lastname: Sauter-Louis
authors.affiliation: Clinic for Ruminants with Ambulatory and Herd Health Services, Ludwig-Maximilians-Universität Munich, Sonnenstr. 16, D 85764 Oberschleissheim, Germany.
authors.forename: Andrea
authors.initials: A
authors.lastname: Seemueller
authors.affiliation: Clinic for Ruminants with Ambulatory and Herd Health Services, Ludwig-Maximilians-Universität Munich, Sonnenstr. 16, D 85764 Oberschleissheim, Germany.
authors.forename: Wolfram
authors.initials: W
authors.lastname: Petzl
authors.affiliation: Clinic for Ruminants with Ambulatory and Herd Health Services, Ludwig-Maximilians-Universität Munich, Sonnenstr. 16, D 85764 Oberschleissheim, Germany.
authors.forename: Holm
authors.initials: H
authors.lastname: Zerbe
mesh_terms: D000818:Animals; D002417:Cattle; D004927:Escherichia coli Infections / Q000473:pathology / Q000662:veterinary*; D005260:Female; D007259:Infrared Rays; D008321:Mammary Glands, Animal / Q000473:pathology*; D008414:Mastitis, Bovine / Q000382:microbiology* / Q000473:pathology; D013817:Thermography / Q000662:veterinary*
keywords: Dairy cow; E. coli; Mammary gland; Mastitis detection; Thermography