title: Ranges of diurnal variation and the pattern of body temperature, blood pressure and heart rate in laboratory beagle dogs.
abstract: Ranges in diurnal variation and the patterns of body temperature (T), blood pressure (BP), heart rate (HR) and locomotor activity (LA) in 61 laboratory beagle dogs were analyzed using a telemetry system. Body temperature, BP, HR and LA increased remarkably at feeding time. Locomotor activity increased sporadically during the other periods. Body temperature was maintained at the higher value after feeding but had decreased by 0.2 C by early the next morning. Blood pressure fell to a lower value after feeding but had increased by 2.8% by early the next morning. Heart rate decreased progressively after feeding and was 14.5% lower the next morning. This study determined that in laboratory beagles the ranges of diurnal variation and patterns of T, BP and HR are significantly different from those reported in humans and rodents, and that over 24 hr these physiological changes were associated with their sporadic wake-sleep cycles of the dogs.
authors.affiliation: Development Research Laboratories, Banyu Pharmaceutical Co., Ltd., 810 Nishijo, Menuma-machi, Osato-gun, Saitama-ken, 360-0214, Japan.
authors.forename: Hiroyasu
authors.initials: H
authors.lastname: Miyazaki
authors.forename: Mutsumi
authors.initials: M
authors.lastname: Yoshida
authors.forename: Keiji
authors.initials: K
authors.lastname: Samura
authors.forename: Hiroyoshi
authors.initials: H
authors.lastname: Matsumoto
authors.forename: Fumihiko
authors.initials: F
authors.lastname: Ikemoto
authors.forename: Masahiro
authors.initials: M
authors.lastname: Tagawa
mesh_terms: D000818:Animals; D000830:Animals, Laboratory / Q000502:physiology*; D001794:Blood Pressure / Q000502:physiology*; D001831:Body Temperature / Q000502:physiology*; D002940:Circadian Rhythm; D004285:Dogs / Q000502:physiology*; D005260:Female; D006339:Heart Rate / Q000502:physiology*; D008297:Male; D009043:Motor Activity / Q000502:physiology; D013686:Telemetry