Ventilatory response to hypoxia of the 1-day old chicken hatchling after prenatal cold-induced hypometabolism.

Highlights: [•] Sustained prenatal hypoxia decreases embryonic metabolic rate and blunts the postnatal hypoxic ventilatory response (HVR). [•] We tested the possibility that the prolonged hypometabolism may be a contributing factor. [•] Chicken embryos were incubated at 35°C to lower their prenatal oxygen consumption without changes in oxygenation. [•] One-day old hatchlings had pulmonary ventilation, oxygen consumption and HVR as in controls. [•] Hence, sustained prenatal decrease in metabolic rate by itself does not carry obvious consequences on the newborn's HVR. [ABSTRACT FROM AUTHOR]

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