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Environmental effects on steroid hormone concentrations in laying hens’ eggs

✍ Scribed by Janczak, A. M.; Torjesen, P.; Rettenbacher, S.

Book ID
126523341
Publisher
Taylor and Francis Group
Year
2009
Tongue
English
Weight
137 KB
Volume
59
Category
Article
ISSN
0906-4702

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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