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不同能量摄入水平对奶牛产乳性能及血液中Leptin和NPY浓度的影响研究
能量奶牛 产乳性能
2008/3/3
将30头围产期健康奶牛随机分为3组，每组均为10头，其中Ⅰ组为对照组，Ⅱ组和Ⅲ组为试验组；Ⅰ、Ⅱ、Ⅲ组分别于产前第28 d开始饲喂标准日粮（能量摄入100%组）、标准日粮增加20%能量（能量摄入120%组）和标准日粮减少20%能量（能量摄入80%组），产后各组奶牛均饲喂标准泌乳日粮，至产后第56 d结束，观察不同能量摄入水平对产后奶牛产乳性能及血液中瘦素（Leptin）和神经肽Y(NPY)浓度的...
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...