Breathing pattern and ventilatory chemosensitivity of the 1-day old Muscovy duck (Cairina moschata) in relation to its metabolic demands

Mortola, Jacopo P.; Toro-Velasquez, Paula Andrea

doi:10.1016/j.cbpa.2013.09.008

Cited by 6 publications

(20 citation statements)

References 38 publications

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“…At rest, hatchlings breathe at a rate of 33 breaths/min, which is roughly three times the breathing frequency of adult Pekin ducks (2,5,12). A similar difference between hatchling and adult ƒ is observed in chicken and Muscovy ducks (10,12,16).…”

Section: Breathing Frequency Tidal Volume and Minute Ventilationsupporting

confidence: 82%

“…Pekin duck hatchlings have a lower ƒ when compared with other precocial hatchlings (Table 1). Pekin duck hatchling ƒ is 31, 27, and 47% lower than wedge-tailed shearwater, Muscovy duck, and chicken hatchlings (16,33). At rest, hatchlings breathe at a rate of 33 breaths/min, which is roughly three times the breathing frequency of adult Pekin ducks (2,5,12).…”

Section: Breathing Frequency Tidal Volume and Minute Ventilationmentioning

confidence: 97%

“…EP, externally pipped; Tb, body temperature. a Data for Muscovy duck and chicken hatchlings from Mortola and Toro-Velasquez (16). b EP chickens from Szdzuy and Mortola (27).…”

Section: Externally Pipped Paranate and Hatchling Responses To Coolingmentioning

confidence: 99%

“…As the lungs increase their contribution to oxygen delivery, limits placed on oxygen uptake by eggshell conductance should decrease. One might expect that the ability to increase oxygen delivery by changing breathing patterns in externally pipped paranates might allow for hypercapnic and endothermic ventilatory responses when faced with high CO 2 or cooling ambient temperatures.The ventilator chemosensitivity to hypoxia and hypercapnia differs between externally pipped paranates and hatchlings (16,27). In chicken hatchlings, a strong hypoxic and hypercapnic response of breathing frequency (ƒ), tidal volume (V T ), and pulmonary ventilation (V E) exists.…”

mentioning

confidence: 99%

“…The ventilator chemosensitivity to hypoxia and hypercapnia differs between externally pipped paranates and hatchlings (16,27). In chicken hatchlings, a strong hypoxic and hypercapnic response of breathing frequency (ƒ), tidal volume (V T ), and pulmonary ventilation (V E) exists.…”

mentioning

confidence: 99%

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Ventilation changes associated with hatching and maturation of an endothermic phenotype in the Pekin duck,Anas platyrhynchos domestica

Sirsat

Dzialowski

2016

American Journal of Physiology-Regulatory, Integrative and Comp

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Precocial birds begin embryonic life with an ectothermic metabolic phenotype and rapidly develop an endothermic phenotype after hatching. Switching to a high-energy, endothermic phenotype requires high-functioning respiratory and cardiovascular systems to deliver sufficient environmental oxygen to the tissues. We measured tidal volume (VT), breathing frequency (ƒ), minute ventilation (V̇e), and whole-animal oxygen consumption (V̇o2) in response to gradual cooling from 37.5°C (externally pipped paranates, EP) or 35°C (hatchlings) to 20°C along with response to hypercapnia during developmental transition from an ectothermic, EP paranate to endothermic hatchling. To examine potential eggshell constraints on EP ventilation, we repeated these experiments in artificially hatched early and late EP paranates. Hatchlings and artificially hatched late EP paranates were able to increase V̇o2significantly in response to cooling. EP paranates had high ƒ that decreased with cooling, coupled with an unchanging low VT and did not respond to hypercapnia. Hatchlings had significantly lower ƒ and higher VT and V̇e that increased with cooling and hypercapnia. In response to artificial hatching, all ventilation values quickly reached those of hatchlings and responded to hypercapnia. The timing of artificial hatching influenced the temperature response, with only artificially hatched late EP animals, exhibiting the hatchling ventilation response to cooling. We suggest one potential constraint on ventilatory responses of EP paranates is the rigid eggshell, limiting air sac expansion during inhalation and constraining VT Upon natural or artificial hatching, the VT limitation is removed and the animal is able to increase VT, V̇e, and thus V̇o2, and exhibit an endothermic phenotype.

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Section: Breathing Frequency Tidal Volume and Minute Ventilationsupporting

confidence: 82%

Section: Breathing Frequency Tidal Volume and Minute Ventilationmentioning

confidence: 97%

“…EP, externally pipped; Tb, body temperature. a Data for Muscovy duck and chicken hatchlings from Mortola and Toro-Velasquez (16). b EP chickens from Szdzuy and Mortola (27).…”

Section: Externally Pipped Paranate and Hatchling Responses To Coolingmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Ventilation changes associated with hatching and maturation of an endothermic phenotype in the Pekin duck,Anas platyrhynchos domestica

Sirsat

Dzialowski

2016

American Journal of Physiology-Regulatory, Integrative and Comp

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Development of endothermy in birds: patterns and mechanisms

Price

Dzialowski

2017

J Comp Physiol B

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Endothermy is a conspicuous and important adaptation in birds. Even though juvenile and adult birds are endothermic and maintain a constant, high body temperature by means of internal heat production, they begin life expressing an ectothermic phenotype. Depending on where a species falls along a continuum of maturity at hatching, from precocial to altricial, they begin to express endothermic traits either close to the time of hatching or as nestlings over a period of 1-3 weeks. Developing endothermy requires attaining a high basal metabolic rate and associated aerobic scope to produce sufficient internal heat, insulation to retain the internally produced heat, and a thermostat that "turns on" heat production in response to cooling ambient temperatures. To support the high metabolic costs of endothermy, the animal must have the capacity to deliver sufficient oxygen and nutrients to the heat-generating tissues. In this review, we examine the development of physiological and morphological traits that are required for endothermy and discuss their potential to limit the development of endothermy. These include ventilatory and cardiovascular function, contribution of visceral organ masses, membrane lipid composition, substrate supply pathways, and skeletal muscle physiology. The developmental trajectories of each of these systems in precocial and altricial species can have significant effects on the development of an endothermic phenotype.

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Age and gender influence the cardiorespiratory function and metabolic rate of broiler chicks during normocapnia and hypercapnia

Espinha

Souza

Capalbo

et al. 2014

Respiratory Physiology & Neurobiology

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Breathing pattern and ventilatory chemosensitivity of the 1-day old Muscovy duck (Cairina moschata) in relation to its metabolic demands

Cited by 6 publications

References 38 publications

Ventilation changes associated with hatching and maturation of an endothermic phenotype in the Pekin duck,Anas platyrhynchos domestica

Ventilation changes associated with hatching and maturation of an endothermic phenotype in the Pekin duck,Anas platyrhynchos domestica

Development of endothermy in birds: patterns and mechanisms

Age and gender influence the cardiorespiratory function and metabolic rate of broiler chicks during normocapnia and hypercapnia

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