Daily Rhythmicity of Glycemia in Four Species of Domestic Animals under Various Feeding Regimes

The Journal of Physiological Sciences

Giovanni Caola¹  Roberto Refinetti²  Francesco Fazio¹  Giuseppe Piccione¹ 

[1] Laboratorio di Cronofisiologia Veterinaria, Dipartimento di Scienze Sperimentali e Biotecnologie Applicate, Facoltà di Medicina Veterinaria, Università degli Studi di Messina;Circadian Rhythm Laboratory, University of South Carolina

关键词: cattle;    circadian rhythm;    dog;    glucose;    horse;    sheep;   

DOI  :  10.2170/physiolsci.RP006508

学科分类：生理学

来源: Springer

【 摘 要 】

References(16)Cited-By(1)Daily rhythmicity of physiological processes has been described for numerous variables in numerous species. A major source of this rhythmicity is a circadian pacemaker located in the mammalian hypothalamus, but very little is known about how the pacemaker generates the multiplicity of bodily rhythms. Research on rats has shown that the rhythm of blood glucose concentration is not a mere consequence of the rhythm of food ingestion, but is rather generated directly by the pacemaker. In this study, we investigated the rhythm of blood glucose concentration in four different species of domestic animals under four different feeding regimes. Our results suggest that, as in rats, the rhythm of blood glucose concentration is not a mere consequence of the rhythm of food ingestion in sheep and cattle. In dogs and horses, however, the rhythmicity of blood glucose concentration seems to be contingent on the presence of a feeding regime.

【 授权许可】

Unknown