Effects of thyroxine on the reproductive organs and growth of young chickens |
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| Authors: | S K Majeed M H Injidi J M Forbes |
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| Institution: | (1) Huntingdon Research Centre, PE18 6ES Huntingdon, (England);(2) Department of Animal Physiology and Nutrition, University of Leeds, LS2 9JT Leeds, (England);(3) Present address: College of Veterinary Medicine, University of, Baghdad, Iraq |
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| Abstract: | Summary Male chicks of an egg-laying strain were injected with 0, 1, 2 or 4  g/100g b. wt thyroxine s. c. daily from 7 to 12 weeks of age. Increasing dose suppressed testicular development and puberty was completely blocked by the highest level. Live weight gain was enhanced by thyroxine treatment. Similar treatment of females prevented normal development of the ovaries at puberty. |
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