Respiratory rate (f) and tidal volume (VT) have been measured at normal and at warm ambient temperatures (Ta) in adult domestic fowl by means of a whole body plethysmograph. Resting values of f = 23 +/− 9 min-1 and of VT = 25.6 +/− 0.9 ml min-1 were found. At Ta 30, 35 or 40 degrees C f increased in direct relation to the severity of the heat stress reaching a maximum values of 273 +/− 12 min-1; VT fell uniformly in all three climates to a minimum of 9.0 +/− 0.5 ml. Total ventilation (V) showed a linear relation with f during first-phase panting. Second-phase panting occurred only at Ta 40 degrees C; V increased at first but subsequently fell as the decline in f became more pronounced.
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JOURNAL ARTICLE| 01 April 1982
The respiratory responses of the fowl to hot climates
A. H. Sykes
Online Issn: 1477-9145
Print Issn: 0022-0949
© 1982 by Company of Biologists
J Exp Biol (1982) 97 (1): 301–309.
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H. Kassim, A. H. Sykes; The respiratory responses of the fowl to hot climates. J Exp Biol 1 April 1982; 97 (1): 301–309. doi: https://doi.org/10.1242/jeb.97.1.301
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