摘要
[目的]研究不同鹅种胚胎期和生长早期胸肌和腿肌中IGF-Ⅰ mRNA的表达规律及其与体重的相关性分析。[方法]选择生长速度差异较大的太湖鹅和皖西白鹅为试验模型,采用多重荧光竞争性PCR方法研究鹅23、25、27、29胚龄和0、2、4、6、8、10、12周龄胸肌和腿肌中IGF-Ⅰ mRNA的表达规律,并对其与体重的相关性进行比较。[结果]IGF-Ⅰ mRNA在鹅胚胎期胸、腿肌中都有表达,且表达早于23胚龄;不同品种鹅早期肌肉组织中IGF-Ⅰ mRNA的表达发育模式存在部分差异;太湖鹅体重与腿肌中IGF-ⅠmRNA的表达呈显著正相关,皖西白鹅体重与胸肌中IGF-Ⅰ mRNA的表达呈显著正相关。[结论]肌肉IGF-Ⅰ mRNA的表达可能在鹅早期生长发育过程中发挥着重要作用。
[Objective] This study aimed to investigate the expression of IGF-I mRNA in breast and leg muscles of goose at the embryonic period and early growth stage, as well as the correlations between IGF-I mRNA expression and goose body weight. [Method] The expression of IGF-I mRNA in breast and leg muscles of 23, 25, 27, 29-embryo days and 0, 2, 4, 6, 8, 10, 12 week old geese of Taihu and Wanxi breeds was analyzed with multiplex competitive fluorescent-PCR method. [Result] Goose IGF-I mRNA was detected in breast and leg muscles of 23-embryo days of the both goose breeds. There were some differences in the IGF-I mRNA expression profiles between the two goose breeds during development stage. The body weight of Taihu goose was positively related with the IGF-I mRNA expression in leg muscle, and the body weight of Wanxi goose was positively related with IGF-I mRNA level in breast muscle. [Conclusion] IGF-I mRNA in the muscle of goose might play an important role in early development stage.
基金
Supported by the Key Science and Technology Research and Development Program of Jiangsu Province(BE2010370)
the Natural Science Foundation of Jiangsu Province (BK2001432)
Earmarked Fund for China Agriculture Research System(nycytx-42-G1)~~
