Zobrazeno 1 - 10 of 25 pro vyhledávání: '"H. L. Kempster"'
1
The Influence of Summer Temperatures on the Rate of Growth of Chickens
Autor: H. L. Kempster
Publikováno v: Poultry Science. 17:259-263
THE phenomenon of growth in chickens is of utmost importance both from the standpoint of research and the economic production of poultry. Growth, data are widely used as a measure of experimental results and the relation of body weights to other beha
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8f758d359936eedff0d47f35539eae86
https://doi.org/10.3382/ps.0170259
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3
The Feed Purchasing Power of the Eggs Produced by a Hen
Autor: H. L. Kempster
Publikováno v: Poultry Science. 8:379-382
The feed purchasing power of the eggs produced by a hen is of economic importance in determining the place poultry should play in a system of agriculture. Having the price of feed and eggs already determined, if one were to assume a certain egg produ
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e94b5fa7b84394a3d91916cf27b79726
https://doi.org/10.3382/ps.0080379
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4
Initial and Actual Selection in Poultry
Autor: G. E. Dickerson, N. R. Gyles, Q. B. Kinder, H. L. Kempster
Publikováno v: Poultry Science. 34:530-539
THE general improvement in various aspects of animal performance, over a number of years and in several countries, has been outlined by Lush (1951). Although the portion of such improvement which may be attributed to the selection of superior breedin
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d5e6fb26db518d0d5b6100c41b945f8f
https://doi.org/10.3382/ps.0340530
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5
THE RATE OF SENESCENCE OF THE DOMESTIC FOWL AS MEASURED BY THE DECLINE IN EGG PRODUCTION WITH AGE
Autor: Earl W. Henderson, Samuel Brody, H. L. Kempster
Publikováno v: The Journal of General Physiology
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
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63aa21bb73c8b0be81ba6c1191a337d1
http://europepmc.org/articles/PMC2140608
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9
Mild Hyperthyroidism Maintains Egg Production with Advancing Age
Autor: H. L. Kempster, C. W. Turner
Publikováno v: Poultry Science. 27:453-458
IN FOWLS, the pullet egg production is highest, followed by a decline ranging from 12 to 20 percent per year (Brody et al. 1923; Hall and Marble, 1931; and Clark, 1940). The decline in yearly egg production has been suggested by Brody (1945) as a mea
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d49410775f84dd424cc8bb7410531cb6
https://doi.org/10.3382/ps.0270453
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10
Observations on the Sexual Behavior of New Hampshire Males
Autor: Jesse E. Parker, H. L. Kempster, Fred F. McKenzie
Publikováno v: Poultry Science. 19:191-197
ALTHOUGH the physiology of reproduction of the female domestic fowl has been very, carefully studied by a large number of investigators, relatively mew studies have been made with the male. Important contributions have been made in this field by Hutt
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b09b9de255ca4bf853821ac7bb1d403a
https://doi.org/10.3382/ps.0190191
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