Variations of core-temperature rhythms in unrestrained sheep

Möhr, E.; Krzywanek, H. J.

doi:10.1016/0031-9384(90)90345-5

Cited by 23 publications

(5 citation statements)

References 14 publications

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“…The laboratory rat (Rattus norvegicus) is the species on which the greatest number of studies has been conducted , but many studies were also conducted on domestic mice (69)(70)(71)(72)(73)(74)(75)(76)(77)(78)(79)(80)(81)(82)(83)(84)(85)(86), golden hamsters (87)(88)(89)(90)(91)(92)(93)(94)(95)(96), and many other rodent species . A large number of studies has also been conducted on primates (130-145), including humans , as well as in dogs (185)(186)(187)(188), cats (189-191), goats (192)(193)(194)(195)(196), sheep (197)(198)(199)(200)(201)(202)(203), horses (203)(204)(205)(206)…”

Section: Intra-and Interspecies Differencesmentioning

confidence: 99%

The circadian rhythm of body temperature

Refinetti¹

2010

Front Biosci

230

173

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This article reviews the literature on the circadian rhythm of body temperature. It starts with a description of the typical pattern of oscillation under standard laboratory conditions, with consideration being given to intra- and interspecies differences. It then addresses the influence of environmental factors (principally ambient temperature and food availability) and biological factors (including locomotor activity, maturation and aging, body size, and reproductive state). A discussion of the interplay of rhythmicity and homeostasis (including both regulatory and heat-exchange processes) is followed by concluding remarks.

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Section: Intra-and Interspecies Differencesmentioning

confidence: 99%

The circadian rhythm of body temperature

Refinetti¹

2010

Front Biosci

230

173

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“…Not all studies detected robust rhythmicity, and this is indicated by the absence of acrophase values. In one of the studies, ambient temperature was maintained constant but the animals were fed only once a day (in the morning), and the increased thermogenesis associated with feeding seemed to account for most of the daily variation in body temperature (14). In another study, where ambient temperature oscillated from 10 to 30 °C daily, the oscillation in body temperature seemed to follow the oscillation in ambient temperature (15).…”

Section: Daily Rhythmicitymentioning

confidence: 99%

Thermal chronobiology of domestic animals

Piccione

Refinetti²

2003

Front Biosci

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This article reviews the literature on the circadian and estrous rhythms of body temperature in farm animals. Although most research in this area has lacked the methodological sophistication of research conducted on laboratory animals, the experimental results are consistent with the general principles of thermal chronobiology derived from laboratory studies and, at the same time, provide specific information about the peculiarities of livestock species. Detailed knowledge of the normal parameters of the body temperature rhythms is important for the advancement of diagnostic procedures in veterinary medicine and for the optimization of farm yield in the dairy and meat industry.

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“…Studies in humans and dogs described a diurnal variation in tear turnover rate 5,6 . In the study of other physiological parameters, the pattern of diurnal variation was found to be affected by a number of endogenous and exogenous factors such as age, 7,8 season, 9–11 feeding times and fasting, 12–14 isolation, 15 exercise, 16,17 electro‐magnetic field, 18,19 change in light intensity and environmental temperature 10 . Normal STT has recently been shown to be affected by age, gender, time of day, season, environmental condition and placement of strips 20,21 .…”

Section: Introductionmentioning

confidence: 99%

Daily rhythm of tear production in normal horse

Piccione

Giannetto

Fazio

et al. 2008

Veterinary Ophthalmology

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Objective This study was designed to assess the daily rhythm of tear production in clinically healthy horses, to compare left eye and right eye, and to evaluate the influence of time and gender. Animal studied For our study 18 horses (nine female and nine male) were subjected toProcedures In all subjects Schirmer tear tests were performed at 4-h intervals over a 24-h period. Results A circadian rhythm of tear production was found during the 12/12 L/D period and during constant darkness. Also our results showed a statistical significant difference comparing left eye and right eye, and between gender. Conclusions Our findings would suggest that the time of tear evaluation is significant in the diagnosis of tear film disorders, and that the difference between the two eyes and the two genders should be taken into consideration during the ophthalmic exam.

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Variations of core-temperature rhythms in unrestrained sheep

Cited by 23 publications

References 14 publications

The circadian rhythm of body temperature

The circadian rhythm of body temperature

Thermal chronobiology of domestic animals

Daily rhythm of tear production in normal horse

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