Abstract
Insulin-like growth factor(IGF)-I and IGF-binding activity were characterized in sera from normal, fast growing, and very fast growing chicken strains. In contrast to a previous report, specific IGF-binding activity was observed in this nonmammalian species. Age-related IGF-binding activity levels did not differ between strains. IGF-I levels were significantly higher for the normal as compared to the 2 fast growing strains. Chromatographic studies show that IGF-I is associated with acid-dissociable high MW complexes in chicken serum, and the MW patterns are similar to human serum. Circulating levels of IGF-I or IGF-binding activity do not account for accelerated somatic growth in inbred large-bodied chicken strains.
Original language | English (US) |
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Pages (from-to) | 2465-2470 |
Number of pages | 6 |
Journal | Life Sciences |
Volume | 45 |
Issue number | 25 |
DOIs | |
State | Published - 1989 |
Externally published | Yes |
ASJC Scopus subject areas
- General Pharmacology, Toxicology and Pharmaceutics
- General Biochemistry, Genetics and Molecular Biology