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Effects of Aroclor 1254 on LH and 17,20β-P secretion in female Prussian carp (Carassius gibelio Bloch) in the spawning season
PCBs cyprinids gonadotropins LH, steroids reproduction
2015/6/24
The effects of Aroclor 1254 on the secretion of luteinizing hormone (LH) and 17,20β-dihydroxy-4-pregnen-3-one (17,20β-P) in female Prussian carp (Carassius gibelio Bloch) at the time of their natural ...
Effects of non-steroidal gonadal factors on LH secretion in female common carp during the reproductive cycle
inhibin activin ovarian extract LH common carp aquaculture
2015/6/5
The aim of this study was to evaluate the effects of recombinant human inhibin A, recombinant human activin A and desteroidized ovarian extract on LH secretion in vitro and in vivo in female common ca...
Intravenous Orexin Reduces LH Secretion in Castrated Camelus Dromedaries Fed a Sub-maintenance Diet
Orexin LH FSH Camel
2016/5/3
It has been shown that orexin has an inhibitory effect on gonadotropin secretions in non-ruminant animals. The goal of this study was to determine whether orexin affects LH, and FSH secretions in the ...
单色光对产蛋鸡血清中LH和FSH含量的影响
单色光 LH FSH 蛋鸡
2008/10/14
【目的】研究单色光对外周血LH和FSH含量的影响，为阐明单色光对蛋鸡产蛋性能的作用机理提供科学依据。【方法】采用红、绿、蓝三种发光二级管和白炽灯，对蛋鸡进行光照，试验期19～53周龄，光强度15 lx,光照时间16h。【结果】25～34周龄段，蓝光组血清LH 和FSH值上升维持时间最长，峰值出现最晚。37～49周龄段，白光组LH值一直高于其它组，而40～49周龄，红光组LH和FSH值持续上升。在2...
应用LH-RH免疫和IGF-1诱导技术提高东北梅花鹿鹿茸产量的研究
鹿茸 IGF-1诱导 LH-RH免疫
2008/9/10
该项目筛选出应用LHRH-B和LHRH-D免疫雄性梅花鹿的高效弗氏佐剂；筛选出仅处理一次就可以在生茸后期获得良好免疫和生长再生茸效果的八肽LHRH-D免疫制剂，建立了相应的免疫程序；应用八肽LHRH-D免疫制剂，可以使6月中旬锯头茬茸的东北梅花鹿再生茸生长时间平均为74.2天，再生茸生长率达到75％，平均增产312.4克；东北梅花鹿每周口服一次半胱胺，服用3周，可以使血清IGF-1水平比对照...
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...
比较高繁殖力的济宁青山羊和低繁殖力的沂蒙黑山羊年周期血浆中促卵泡素（FSH）和促黄体素（LH）的分泌变化规律，分析FSH和LH与山羊繁殖力之间的关系。采用放射免疫分析法（RIA）测定血浆中FSH和LH浓度，结果表明：济宁青山羊和沂蒙黑山羊血浆中FSH和LH浓度都存在季节性变化，即秋季最高，春季次之，夏季最低；济宁青山羊和沂蒙黑山羊全年各月血浆中FSH和LH的分泌呈波浪式变化；高繁殖力的济宁青山羊各...
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...