Since short-term feed restriction of dwarf chickens resulted in decreased plasma IGF-I, it appears that this is not a GH-dependent effect.
However, with longer term undernutrition, IGF-I was not decreased in dwarf chickens. So, after a longer restriction period, the regulation of these factors appears to become more GH-dependent.
IGF-II was not depressed at all by feed restriction in the dwarf chicken, suggesting a degree of GH-dependency.
Since short-term feed restriction of dwarf chickens resulted in decreased plasma IGF-I, it appears that this is not a GH-dependent effect.However, with longer term undernutrition, IGF-I was not decreased in dwarf chickens. So, after a longer restriction period, the regulation of these factors appears to become more GH-dependent.IGF-II was not depressed at all by feed restriction in the dwarf chicken, suggesting a degree of GH-dependency.
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