RESPIRATORY EXCHANGES IN THE INCUBATED EGG OF THE DOMESTIC GUINEA FOWL

被引:15
作者
ANCEL, A
VISSCHEDIJK, AHJ
机构
[1] Centre d'Ecologie et Physiologie Energétiques, (ex Laboratoire d'Etude des Régulations Physiologiques), Centre National de la Recherche Scientifique, Strasbourg
[2] Department of Veterinary Physiology, University of Utrecht, Utrecht
来源
RESPIRATION PHYSIOLOGY | 1993年 / 91卷 / 01期
关键词
BIRDS; GUINEA FOWL; CONDUCTANCE; GAS; EGG SHELL; DEVELOPMENT; GAS EXCHANGE; EGG; BIRD;
D O I
10.1016/0034-5687(93)90087-Q
中图分类号
Q4 [生理学];
学科分类号
071003 ;
摘要
The daily O2 uptake (M(O2)) and CO2 production (M(CO2)) rates were measured in guinea fowl eggs with a wide range of mass specific shell water vapor conductance, spG(H2O) [0.108 to 0.365 mg.(g.Torr.day)-1], from day 10 to the end of incubation, day 28. The respiration rate showed a plateau, from day 22 to day 24, typical of a precocial bird: M(O2) almost-equal-to 21.4 and M(CO2) almost-equal-to 15.2 mmol.day-1. The plateau M(O2) value was that predicted by allometric relation. At the plateau, respiratory exchanges appeared significantly limited by spG(H2O). The limiting effect of spG(H2O) on respiratory metabolism began as soon as day 18 (64% of incubation time). The respiratory ratio was 0.75 at day 10, decreased to 0.65-0.66 on days 12-14 and stabilized at 0.70-0.71 on days 20-28.
引用
收藏
页码:31 / 42
页数:12
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