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Respective effects of chicks and nest on behavior and hormonal concentrations of incubating domestic hens

✍ Scribed by Gerard Leboucher; Marie-Annick Richard-Yris; Daniel Guemene; Arthur Chadwick


Book ID
116045901
Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
556 KB
Volume
54
Category
Article
ISSN
0031-9384

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## Abstract Long‐term experimental feeding of 20,000 ppm α‐tocopheryl acetate to laying hens caused a significant (__P__ < 0.05) decrease in hatching rates as compared to the control group, which was fed a diet containing 19 ppm α‐tocopherol. When the thyroid hormones in the developing chicks were