Fowls with Blue Plumage from a Leghorn-Cornish Cross
نویسندگان
چکیده
منابع مشابه
Nanostructure predicts intraspecific variation in ultraviolet-blue plumage colour.
Evidence suggests that structural plumage colour can be an honest signal of individual quality, but the mechanisms responsible for the variation in expression of structural coloration within a species have not been identified. We used full-spectrum spectrometry and transmission electron microscopy to investigate the effect of variation in the nanostructure of the spongy layer on expression of s...
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A. C. Driskell, Lab of Analytical Biology, National Museum of Natural History, Smithsonian Inst., 4210 Silver Hill Road, Suitland, MD 20746 USA. R. O. Prum, Dept of Ecology and Evolutionary Biology, and Peabody Museum of Natural History, Yale Univ., Box 208105, New Haven, CT 06520 USA. S. Pruett-Jones ([email protected]), Dept of Ecology and Evolution, Univ. of Chicago, 1101 East 57th S...
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In some bird species, both adult and juvenile individuals are often brightly coloured. It has been commonly assumed that identical plumage colouration present in both sexes results from strong intersexual genetic correlations in colour-related traits. Here, we aimed at testing this hypothesis in juvenile individuals and looked at genetic parameters describing carotenoid-based colouration of blu...
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It is shown, in a carefully controlled experiment, that fowl leucemia can be readily transmitted from chicken to chicken by injection. Of 25 fowls, 13 were injected intravenously with blood from a chicken (No. 575) with erythroleucosis and 12 with blood from a chicken (No. 689) with myeloid leucosis. The injected birds and an equal number of uninjected controls were kept in tiers of alternating...
متن کاملPlasma changes in fowls with a transmissible multiple lymphoma.
Few studies have been made of the blood proteins of tumor-bearing animals. Sanders, Huddleson and Schaible (8) studied the pooled serum of chickens infected with various types of fowl leukosis, and Sharp, Taylor, Beard and Beard (9) the serum of papillomatous rabbits. Changes in the serum proteins were found by both groups of investigators. In the present investigation the Tiselius method (11) ...
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ژورنال
عنوان ژورنال: Poultry Science
سال: 1935
ISSN: 0032-5791
DOI: 10.3382/ps.0140045