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采用放射免疫分析方法（RIA）测定蛋鸡性成熟过程中和产蛋期血液中FSH、LH和P4的含量，研究不同日粮能量水平对蛋鸡血液FSH、LH、P4和产蛋率的影响，进而研究这些激素与产蛋率的关系。结果表明，高能使见蛋日龄提前，但见蛋后，高能I和低能Ⅱ组产蛋率上升较慢。随着能量的降低，到达产蛋率峰值的时间推迟，峰值以对照组最高，低能组居中，高能组最低。峰值后，高能组产蛋率迅速下降，而其它各组在37周龄前产蛋率...
Leptin Is a Metabolic Signal for GnRH-LH/FSH Axis in Feed-restricted Ewes
Leptin Gonadotropin Ewe Metabolic Signal
2016/4/26
Two experiments were conducted to determine whether leptin is a metabolic signal for gonadotropin secretion in ewes. In the first experiment, twenty-eight cyclic Chal ewes were assigned randomly to an...