绍鸭性成熟过程中血清IGF-I和leptin浓度的变化  

Changes of Serum Leptin and IGF-I During Sexual Maturation in Shaoxing Ducks

作　　者：倪迎冬[1] 陈伟华[1] 王亚菊[1] 周玉传[1] 陈杰[1] 赵茹茜[1] 

机构地区：[1]南京农业大学农业部动物生理生化重点开放实验室,江苏南京210095

出　　处：《家畜生态学报》2005年第4期75-77,共3页Journal of Domestic Animal Ecology

基　　金：国家自然科学基金农业倾斜项目(39770540)

摘　　要：试验采用放射免疫学方法(RIA)测定了绍鸭性成熟过程中血清leptin和IGF-I浓度的变化.结果显示,性成熟前30 d(90日龄)时血清leptin浓度显著升高,此后呈下降趋势;在1～150日龄期间,血清IGF-I浓度出现两个峰值,即在发育早期(30日龄)和性成熟(120日龄)时.以上结果显示:leptin和IGF-I可能是性成熟启动的两个代谢相关激素信号.RIA results showed that serum leptin level elevated significantly about 30 days prior to sexual maturation, however, serum IGF-I concentrations exhibited two peaks during the onset of puberty, one was at D30and the other appeared at onset of lay. These results suggested that leptin may serve as a permissive signal for the sexual maturation, and IGF-I is involved not only in the growth regulation, but also in the mechanisms to initiate and maintain egg lay in Shaoxing ducks.

关 键 词：瘦蛋白(leptin) 胰岛素样生长因子-I(IGF-I) 性成熟 绍鸭 

分 类 号：S852.21[农业科学—基础兽医学]