Authors : Yongfeng Sun, Zhe Hao, Yujian Sui, Lifeng Zhao and Guang Gao
Abstract: In this study, researchers detected the expression of IGF-I mRNA at 1 (day 1), 30 (day 30), 60 (day 60th) and 90 (day 90th) days of age in the breast muscle and leg muscle of geese from Jilin White goose (meat type, egg type) and Hortobagyi goose. Researchers found that the expression of IGF-I mRNA in skeletal muscle tissues differed based on developmental age. The expression of IGF-I mRNA exhibited a trend that ascended firstly and then descended after birth. IGF-I mRNA was expressed in all breast muscle tissues during each stage with higher levels in meat type goose and Hortobagyi goose than that in Jilin egg type goose (p<0.05). The expression pattern of IGF-I mRNA in breast muscle of meat type goose was similar with this in and Hortobagyi goose and in leg muscle, IGF-I mRNA expression patterns were all down-regulated from day 30. Similarity in IGF-I mRNA expression pattern were found in breast among Jilin meat type goose, egg type goose and Hortobagyi goose which indicates that IGF-I may be related to skeletal muscle differentiation and growth and suggests IGF-I mRNA maybe tissue-specific expression and individual difference.
Yongfeng Sun, Zhe Hao, Yujian Sui, Lifeng Zhao and Guang Gao, 2012. Study on the Changes of IGF-I mRNA Expression Levels in the Developmental Muscles of the Geese. Journal of Animal and Veterinary Advances, 11: 3023-3026.