Key result
Gaoyou ducks exhibit higher IGF-I but lower IGF-IR and IGFBP-3 expression than Jinding ducks during development.
Why the study?
The expression patterns of IGF system genes in duck liver tissue during embryonic and early post-hatch development were not well characterized.
Population
Meat-type Gaoyou and egg-type Jinding ducks at embryonic days 13, 17, 21, 25, 27 and 7 days post-hatching
Comparison
Expression levels of IGF-I, IGF-IR, and IGFBP-3 genes between Gaoyou and Jinding ducks
Design
Gene expression quantification by RT-PCR in liver tissue
Authors
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Breed-specific IGF expression in ducks may underlie growth differences; leaves open applications in poultry breeding pending functional validation.
Jianmin et al. (2014) studied Embryonic and early post-hatch development. Duck breed (Gaoyou vs Jinding) vs. Jinding ducks was evaluated on Expression of IGF-I, IGF-IR, and IGFBP-3 genes in liver tissue. Gaoyou ducks exhibited higher IGF-I mRNA levels than Jinding ducks, while Jinding ducks had higher expression of IGF-IR and IGFBP-3 genes during embryonic and early post-hatch development.
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