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Journal of Animal and Veterinary Advances
Year: 2013  |  Volume: 12  |  Issue: 7  |  Page No.: 852 - 858

IGF-1 and FoxO3 Expression Profiles and Developmental Differences of Breast and Leg Muscle in Pekin Ducks (Anas platyrhynchos domestica) During Postnatal Stages

T.S. Xu, L.H. Gu, X.H. Zhang, W. Huang, B.G. Ye, X.L. Liu and S.S. Hou    

Abstract: Breast Muscle (BM) and Leg Muscle (LM) in Pekin duck belong to different types. However, myofiber differences of BM and LMcle and relationship between myofiber development with the expressions of IGF-1 and FoxO3 are not clear. The difference of BM and LM fibres was investigated and relationship between the two gene expressions and myofiber development was explored at D2 (the 2nd day), W2 (the 2nd week), W4, W6. Results showed the development of BM and LM fibres were different as the Relative Growth Areas (RGAs) of BM and LM fibres reached their maximum values at W4-W6 and W2-W4, respectively. The expression of IGF-1 peaked while that of FoxO3 bottomed, at W6 and W2 in BM and LM, respectively. The results of this study could provide basic insight into the skeletal muscle development, the expressions of IGF-1 and FoxO3 and the association between the two aspects.

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