Data are presented showing that the course of decline of egg production with age in the domestic fowl from the time laying begins up to and including 8 years follows an exponential law, that is, each year's egg production is a constant percentage of the preceding year's production (88 per cent in the group of fowl studied). Since the exponential law is the same as the law of monomolecular change in chemistry, and since the course of egg production with age may be taken as an index of the course of senescence of organs, or tissues limiting egg production, it is suggested that this exponential law of egg production substantiates the idea that senescence is a physicochemical process the course of which is limited by a chemical reaction. It is shown that the exhaustion of the oocytes is not likely to be the factor limiting the course of egg production.
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September 20 1923
THE RATE OF SENESCENCE OF THE DOMESTIC FOWL AS MEASURED BY THE DECLINE IN EGG PRODUCTION WITH AGE
Samuel Brody,
Samuel Brody
From the Agricultural Experiment Station, University of Missouri, Columbia.
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Earl W. Henderson,
Earl W. Henderson
From the Agricultural Experiment Station, University of Missouri, Columbia.
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H. L. Kempster
H. L. Kempster
From the Agricultural Experiment Station, University of Missouri, Columbia.
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Samuel Brody
From the Agricultural Experiment Station, University of Missouri, Columbia.
Earl W. Henderson
From the Agricultural Experiment Station, University of Missouri, Columbia.
H. L. Kempster
From the Agricultural Experiment Station, University of Missouri, Columbia.
Received:
July 17 1923
Online Issn: 1540-7748
Print Issn: 0022-1295
Copyright, 1923, by The Rockefeller Institute for Medical Research
1923
J Gen Physiol (1923) 6 (1): 41–45.
Article history
Received:
July 17 1923
Citation
Samuel Brody, Earl W. Henderson, H. L. Kempster; THE RATE OF SENESCENCE OF THE DOMESTIC FOWL AS MEASURED BY THE DECLINE IN EGG PRODUCTION WITH AGE . J Gen Physiol 20 September 1923; 6 (1): 41–45. doi: https://doi.org/10.1085/jgp.6.1.41
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