Assessing the ability of current equine influenza vaccines to provide cross-protection against emerging strains is important. Horses not vaccinated previously and seronegative for equine influenza based on haemagglutination inhibition (HI) assay were assigned at random to vaccinated (n=7) or non-vaccinated (control, n=5) groups. Vaccination was performed twice four weeks apart with a 1 ml influ...

Two experiments were conducted to determine whether administering a dopamine antagonist to steers fed endophyte-infected (E+) tall fescue would increase serum prolactin (PRL) and reduce rectal temperature. Steers in both experiments were housed in environmentally controlled chambers (32 degrees C; 50% relative humidity). In Exp. 1, 10 steers were allotted randomly to receive s.c. injections of ...

Two Bos taurus breeds with known differences in heat tolerance were tested under controlled conditions to evaluate heat tolerance. Romosinuano (Romo) is a tropically adapted breed. Nine Angus (304 ± 7 Kg BW) and nine RO (285 ± 7.5 Kg BW) steers from USDA-ARS, Brooksville, Florida, were transported to the Brody Environmental Center at the University of Missouri. Steers were housed for 14 days at...

The effects of performing video display terminal (VDT) tasks with a bright display (BD) at night on nocturnal salivary melatonin concentration, rectal temperature, heart rate, and sleepiness were examined. Seven healthy male adults performed exciting VDT tasks with a BD and a dark display (DD) and boring VDT tasks with a BD and a DD from 2300 to 0200. The light intensities of the BD and DD were...

OBJECTIVES This study seeks to determine not only the reliability of parental touch in detecting fever as compared to rectal thermometry in under-five children, but also the sociodemographic factors that may predict its reliability. SETTING The study was carried out in the Emergency Paediatric Unit of a tertiary hospital in North Central Nigeria. PARTICIPANTS 409 children aged less than 5 y...

The objective of this study was to compare physiological and thermographic responses to heat stress in three breeds of cattle. Fifteen animals of each of the Nelore, Pantaneiro and Curraleiro Pe-Duro breeds, of approximately two years of age, were evaluated. Heart and respiratory rates, rectal and surface temperature of animals as well as soil temperature were recorded at 8:30 and 15:30 on six ...

Yoneyama, S., S. Hashimoto, and K. Honma. Seasonal changes of human circadian rhythms in Antarctica. Am. J. Physiol. 277 (Regulatory Integrative Comp. Physiol. 46): R1091–R1097, 1999.—The human circadian rhythms in sleep, activity, plasma melatonin, and rectal temperature were explored under two conflicting time cues in Antarctica: an extreme photoperiod and a strict work schedule. The nine hea...

TAYLOR, C. R., KNUT SCHMIDT-NIELSEN, RAZI DMI’EL, AND MICHAEL FEDAK. E$ect of hyperthermia on heat balance during running in the African hunting dog. Am. J. Physiol., 220(3): 823-827. 1971 .-The tricolored Cape hunting dog (Lycaon pi&s) is a doglike African carnivore. It hunts in packs and tirelessly runs down its prey. In experiments at 26 C, the running hunting dog had a higher rectal tempera...

OBJECTIVES Measuring core body temperature is crucial for preventing heat stress disorders in workers. We developed a method for measuring auditory canal temperatures based on a thermocouple inserted into a sponge-type earplug. We verified that the tip of this thermocouple is positioned safely, allowing the wearer to engage in normal physical tasks; this position averaged 6.6 mm from the tympan...

The temporal organization of some physiological parameters in rabbits by evaluating the circatrigintan rhythms of some haematochemical and haematological parameters, and of rectal temperature, in New Zealand white rabbits was studied. For 30 days before the study the animals all followed the same pattern of daily activity with the natural photoperiod for that season, and were fed on hay ad libi...