搜索结果: 1-9 共查到“畜牧学 GnRH”相关记录9条 . 查询时间(0.087 秒)
Effects of GnRH, PGF2α and oxytocin treatments on conception rate at the time of artificial insemination in lactating dairy cows
cow spontaneous oestrus GnRH PGF2伪 oxytocin pregnancy
2015/6/9
In several studies, hormones such as gonadotropin-releasing hormone (GnRH), prostaglandins and oxytocin were used to increase pregnancy rate by inducing ovulation and improving the sperm transport in ...
Superovulation following follicular synchronization with GnRH at random stages of the oestrous cycle in heifers
oestrous cycle GnRH superstimulation follicular puncture heifer
2015/6/9
The objective of this study was to develop a superovulatory program based on synchronization of follicular waves with GnRH which could be applied regardless of the stage of the oestrous cycle. 36 heif...
Superovulation following follicular synchronization with GnRH at random stages of the oestrous cycle in heifers: oocyte competence and in vitro embryo production
heifer oocyte GnRH oocyte competence
2015/6/8
The objective of this study was to develop a superovulatory program based on the synchronization of follicular waves with GnRH which could be applied regardless of the stage of the oestrous cycle. In ...
Changes of Hypothalamic GnRH-I, POMC and NPY mRNA Expression and Serum IGF-I and Leptin Concentrations during Maturation of Shaoxing Ducks (Anas platyrhynchos)
Changes of Hypothalamic GnRH-I, POMC and NPY mRNA Expression and Serum IGF-I and Leptin Concentrations during Maturation of Shaoxing Ducks (Anas platyrhynchos)
2016/5/6
Sexual maturity in poultry is controlled by a complex neural circuit located in the basal forebrain, which integrates the central and peripheral signals to activate hypothalamic gonadotrophin-releasin...
利用长日照和短日照环境调控绍鸭的性成熟时间，并采用反转录多聚酶链式反应(RT-PCR)方法，检测两种日照组(n=6)鸭性成熟过程中下丘脑促性腺激素释放激素-Ⅰ(GnRH-Ⅰ)、阿片促黑激素皮质素原(POMC)和神经肽Y(NPY)mRNA表达的发育性变化及日龄间差异。结果表明，长日照组性成熟时间较短日照组提前30 d。RT-PCR结果显示，两组鸭下丘脑GnRH-Ⅰ mRNA的发育性表达模式相似，从出...
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...
为了探讨促性腺激素释放激素（GnRH）和催产素（OT）是否在下丘脑细胞中共存，采用免疫组织化学双标记法对妊娠期奶山羊下丘脑中GnRH与OT的分布进行了检测。结果显示：室旁核、视上核、视前交叉上核、弓状核、下丘脑外侧区、乳头体内侧核、乳头体后核等核团（区）有GnRH和OT免疫反应双标记细胞，在妊娠的不同时期，GnRH和OT免疫反应双标记细胞数量有显著差异。这些结果为GnRH与OT相互调节提供了形态学...
GnRH在妊娠期黄牛下丘脑—垂体—卵巢轴中的表达
促性腺激素释放激素 下丘脑—垂体—卵巢轴 妊娠 黄牛
2013/12/4
旨在研究促性腺激素释放激素（GnRH）在妊娠期黄牛下丘脑—垂体—卵巢轴中的表达，探索其与妊娠的关系。运用免疫组化ABC 法和图像分析软件Image-Pro Plus 6.0对妊娠期黄牛下丘脑、垂体和卵巢组织中GnRH的表达情况进行研究。结果表明：(1) 在下丘脑中，GnRH阳性神经元主要分布于下丘脑前核(AH)、乳头体内侧核(MMN)、腹内侧核(VMN)、弓状核(ARC)及室旁核(PVN)，其中A...