Summary
The well known increase of egg production in laying hens during the winter months induced by continuous illumination can also be induced by a single shock lighting. This can be done by applying a 1500 Watt lamp twice daily at 4 and 445 a. m. for 20 seconds each time. Since the animals remain sitting on their roosts, the increase of egg production must be due to a direct influence of light via the optic nerve or some cutaneous receptors. The relationship between gonadotropic hormones of the anterior lobe of the hypophysis, blood sugar level and the ovary is discussed briefly.
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Literatur
K. Wagener, Dtsch. tierärztl. Wschr.56, 107 (1949).
J. M. Leruer, Poultry Science26, 202 (1947).
W. Rowan, Cambridge Philos. Soc.13, 374 (1938).
J. B. van den Eeckhoudt, Ann. Soc. Roy. Zool. Belg.77, 83 (1947).
A. Staffe, Geflügelhof (Zollikofen)18, 291 (1949);27, 446, 510 (1950).
J. Benoit, Bull. biol.71 393 (1937).
M. Demmel, Dtsch. tierärztl. Wschr.40, 117 (1933).
O. Riddle, Endocrinology13, 311 (1929).
A. Staffe, Geflügelhof (Zollikofen)18, 291 (1949);27, 446, 510 (1950).
S. Ivanova, Arch. exp. Path. Pharmakol.179, 349 (1935).
Ch. Champy undN. Kritch, Arch. morph. gener. exper.25, 1 (1926).
E. Walker, Biochem. J.19, 1085 (1925).
P. Ortmann, Naunyn Schmiedebergs Arch.198, 96 (1929).
W. Discherl, Hoppe Seylers Z.239, 53 (1936).
U. Westphal, Hoppe Seylers Z.273, 1 und 14 (1942).
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Staffe, A. Belichtung und Legeleistung beim Huhn. Experientia 7, 399–400 (1951). https://doi.org/10.1007/BF02168923
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DOI: https://doi.org/10.1007/BF02168923