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Metabolic correlates of the circadian pattern of suckling-associated arousal in young rabbits

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Abstract

Young rabbits (Oryctolagus cuniculus) are only nursed for 3–5 min every 24 h. They show a circadian increase in activity in anticipation of this, which is entrained by suckling. Our aim was to determine whether serum and liver metabolites show diurnal fluctuations which could act to regulate this circadian pattern. Stomach weight, liver glycogen and serum metabolites were measured every 3 h in 7- to 8-day-old pups when normally nursed (up to 24 h after suckling) and fasted (up to 48 h after suckling). The results suggest:

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Authors and Affiliations

  1. Departamento de Anatomía, Facultad de Medicina, Universidad Nacional Autonoma de Mexico, , , , , , MX

    C. Escobar

  2. Departamento de Fisiología, Instituto de Investigaciones Biomédicas, Universidad Nacional Autonoma de Mexico, , , , , , MX

    R. Hudson & M. Martínez-Gómez

  3. Departamento de Neurociencias, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, , , , , , MX

    R. Aguilar-Roblero

Authors
  1. C. Escobar
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  2. R. Hudson
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  3. M. Martínez-Gómez
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  4. R. Aguilar-Roblero
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Accepted: 9 October 1999

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Escobar, C., Hudson, R., Martínez-Gómez, M. et al. Metabolic correlates of the circadian pattern of suckling-associated arousal in young rabbits. J Comp Physiol A 186, 33–38 (2000). https://doi.org/10.1007/s003590050004

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  • DOI: https://doi.org/10.1007/s003590050004

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