1993
DOI: 10.1152/ajpregu.1993.265.5.r1076
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Skeletal muscle as the major site of nonshivering thermogenesis in cold-acclimated ducklings

Abstract: Despite their lack of brown adipose tissue, 6-wk-old cold-acclimated muscovy ducklings (4 degrees C; CA) exhibit nonshivering thermogenesis (NST) in the cold. To determine the site of this NST, the regional distribution of blood flow was measured by the microsphere method in the thermoneutral zone (25 degrees C) and during acute exposure to cold (8 degrees C). Ducklings reared at thermal neutrality (TN), which use shivering to produce extra heat in the cold, were compared with CA ducklings, which substitute NS… Show more

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Cited by 85 publications
(96 citation statements)
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“…Since skeletal muscle is the main thermogenic organ in cold-acclimated or in glucagon-treated ducklings (Duchamp and Barré 1993;Duchamp et al 1999), the present decrease in mitochondrial muscle activity, in association with a decrease in the plasma levels of glucose and fatty acids, may in part explain why guanethidine-treated ducklings exhibit a lower thermogenic response to glucagon infusion (Filali-Zegzouti et al 2005). As previously reported in rat (Ernst et al 1982), it can be inferred from these data (e.g.…”
Section: Control Guanethidinesupporting
confidence: 65%
“…Since skeletal muscle is the main thermogenic organ in cold-acclimated or in glucagon-treated ducklings (Duchamp and Barré 1993;Duchamp et al 1999), the present decrease in mitochondrial muscle activity, in association with a decrease in the plasma levels of glucose and fatty acids, may in part explain why guanethidine-treated ducklings exhibit a lower thermogenic response to glucagon infusion (Filali-Zegzouti et al 2005). As previously reported in rat (Ernst et al 1982), it can be inferred from these data (e.g.…”
Section: Control Guanethidinesupporting
confidence: 65%
“…Skeletal muscles are the major source of heat production in birds, through shivering thermogenesis (Marjoniemi and Hohtola, 1999;Hohtola, 2004) or potentially non-shivering thermogenesis (Duchamp and Barre, 1993). As such, there should be an increase in OXPHOS capacity in those muscles associated with enhanced heat production and attainment of an endothermic phenotype.…”
Section: Maturation Of Mitochondria Function Skeletal Musclementioning
confidence: 99%
“…Shivering capacity develops rapidly in precocial species upon hatching, and the leg muscles, used for locomotion in precocial species at hatching, are a major site of shivering thermogenesis (Marjoniemi and Hohtola, 1999). Additionally, a number of precocial birds exhibit non-shivering thermogenesis, which can potentially contribute to regulating body temperature (Duchamp and Barre, 1993;Teulier et al, 2014). Metabolically demanding activities such as locomotion and thermogenesis rely on the aerobic capacity of skeletal muscles and associated mitochondrial bioenergetics.…”
Section: Introductionmentioning
confidence: 99%
“…If we assume that skeletal muscle contributes up to 30% of the resting metabolic rate in birds (Duchamp and Barré, 1993), we can estimate that the observed 15% increase in mitochondrial oxidative phosphorylation efficiency contributes to a decrease of almost 5% in whole-body oxygen consumption of fasted chicks. This could represent up to 30% of the fasting-induced reduction in mass-specific metabolic rate.…”
Section: The Journal Of Experimental Biologymentioning
confidence: 99%