大足黑山羊卵泡发育与内分泌激素分析   总被引：1，自引：0，他引：1  

杨孟伯  杨莉  王鲜忠  张家骅 《中国草食动物》2009,29(2)

从大足黑山羊核心保种场选择年龄3～4岁、体重25～40 kg、健康未孕的成年母羊20只,用化学发光和酶联免疫方法分别测定发情期和排卵后募集阶段血浆中FSH 和抑制素水平,用HS-2000兽用B超,频率为7.5MHz线阵探头做直肠探察,连续观察20只大足黑山羊2个完整发情周期内卵巢卵泡发育情况.结果表明,大足黑山羊排卵后募集期血浆中FSH水平和抑制素水平显著高于发情期水平(P＜0.05,n=15).卵泡募集数从15个增加到18个时,FSH水平逐渐升高(P＜0.05,n=15),抑制素水平逐渐下降(P＜0.05,n=15).排卵数从1个增加到4个时,FSH水平逐渐升高(P＜0.05,n=15),抑制素水平逐渐下降(P＜0.05,n=15).3波周期第一波募集阶段FSH水平比4波周期FSH水平低(P＜0.05,n=15),3 波周期第一波募集阶段抑制素水平比4波周期抑制素水平高,但差异不显著(P＞0.05,n=15).  相似文献   

绵羊卵巢卵泡颗粒细胞体外培养中促卵泡素和胰岛素浓度优化研究     

庞钰莹  岳文斌  于雪静  李鹏飞  孟金柱  刘岩  李晓明  黄洋  任有蛇 《山西农业大学学报(自然科学版)》2012,32(6)

为了进一步探讨在无血清体外培养条件下,促卵泡素(FSH)和胰岛素对绵羊卵巢颗粒细胞的影响,以优化颗粒细胞体外培养体系。试验设计6个FSH浓度梯度和3个胰岛素浓度梯度。体外培养7d后,检测培养体系中颗粒细胞数和雌激素浓度。与对照组相比,培养液中添加FSH与胰岛素可显著提高颗粒细胞的增殖和雌激素的分泌(P<0.01);且随着FSH浓度的增加,颗粒细胞数和雌激素分泌量显著增加,当FSH浓度为5.0μg·L-1时,雌激素分泌量最高;随着胰岛素浓度增加,颗粒细胞数和雌激素分泌量显著增加,当胰岛素浓度为10μg·L-1时,颗粒细胞数和雌激素分泌量最高。  相似文献   

FSH对仔猪睾丸支持细胞增殖和GDNF表达的调节     

孙燕王鲜忠  吴建云白汝岚 张家骅 《中国兽医科技》2007,37(11):982-986

以原代培养的仔猪睾丸支持细胞（SC）为试验模型，研究了FSH对SC胶质细胞源性神经营养因子（GDNF）表达及其增殖的影响。结果显示，外源性添加FSH可促进GDNF蛋白表达，而且这种促进作用具有浓度和时间依赖关系，GDNF蛋白水平随着FSH浓度的增加而升高，FSH浓度为50ng／mL时，GDNF水平达到最高，然后逐渐降低；FSH（50ng／mL）作用30min，可显著促进GDNF蛋白的表达（P〈0．05），当FSH作用1h时，GDNF蛋白水平达到最高，随后逐渐降低。FSH可以时间-剂量依赖性促进SC增殖细胞核抗原（PCNA）的表达，FSH（50ng／mL）作用30min时，PCNA的表达显著增加（P〈0．05），作用1h达极显著水平（P〈0．01），至2h时，PCNA蛋白的表达水平达到最高，随后逐渐降低。提示，FSH可在体外条件下通过刺激SC表达GDNF进而促进其增殖。  相似文献   

两次超排采用不同剂量促卵泡素对冲胚数的影响     

张良 《畜牧市场》2007,(8):17-18

在羊的胚胎移植工作中,为了让母羊比在自然状态下多生产几倍甚至十几倍的可用胚胎,就人为地对母羊施用外源性促性腺激素(以下简称FSH),为了追求更高的经济效益,在母羊经过一次超排处理以后,还要多次进行超排。但是,影响超排的因素很多,现仅以两次超排施用的FSH不同剂量为主要因素,对2000～2004年朝阳市种畜场等十个种羊场参加超排的夏洛莱、萨福克和德美等品种154母羊的冲胚教和可用胚胎进行了统计分析。  相似文献   

Effect of eFSH on Ovarian Cyclicity and Embryo Production of Mares in Spring Transitional Phase   总被引：1，自引：0，他引：1  

K.R. Peres  C.B. Fernandes  M.A. Alvarenga  F.C. Landim-Alvarenga 《Journal of Equine Veterinary Science》2007,27(4):176-180

The use of equine FSH (eFSH) for inducing follicular development and ovulation in transitional mares was evaluated. Twenty-seven mares, from 3 to 15 years of age, were examined during the months of August and September 2004, in Brazil. Ultrasound evaluations were performed during 2 weeks before the start of the experiment to confirm transitional characteristics (no follicles larger than 25 mm and no corpus luteum [CL] present). After this period, as the mares obtained a follicle of at least 25 mm, they were assigned to one of two groups: (1) control group, untreated; (2) treated with 12.5 mg eFSH, 2 times per day, until at least half of all follicles larger than 30 mm had reached 35 mm. Follicular activity of all mares was monitored. When most of the follicles from treated mares and a single follicle from control mares acquired a preovulatory size (≥35 mm), 2,500 IU human chorionic gonadotropin (hCG) was administered IV to induce ovulation. After hCG administration, the mares were inseminated with fresh semen every other day until ovulation. Ultrasound examinations continued until detection of the last ovulation, and embryo recovery was performed 7 to 8 days after ovulation. The mares of the treated group reached the first preovulatory follicle (4.1 ± 1.0 vs 14.9 ± 10.8 days) and ovulated before untreated mares (6.6 ± 1.2 vs 18.0 ± 11.1 days; P < .05). All mares were treated with prostaglandin F_2α (PGF_2α), on the day of embryo flushing. Three superovulated mares did not cycle immediately after PGF_2α treatment, and consequently had a longer interovulatory interval (22.4 vs 10.9 days, P < 0.05). The mean period of treatment was 4.79 ± 1.07 days and 85.71% of mares had multiple ovulations. The number of ovulations (5.6 vs 1.0) and embryos (2.0 vs 0.7) per mare were higher (P < 0.05) for treated mares than control mares. In conclusion, treatment with eFSH was effective in hastening the onset of the breeding season, inducing multiple ovulations, and increasing embryo production in transitional mares. This is the first report showing the use of FSH treatment to recover embryos from the first cycle of the year.  相似文献   

莱芜黑山羊发情周期中FSH、LH、E2和P的分泌规律   总被引：6，自引：0，他引：6  

侯衍猛  曹洪防  徐云华  钟为  王树迎 《中国兽医学报》2006,26(3):340-343

莱芜黑山羊在发情期和间情期，血浆内的卵泡刺激素（FSH）和黄体生成素（LH）均呈脉冲式分泌，雌激素（E2）和孕嗣（P）为波动式分泌。发情期FSH的脉冲周期较间情期长，两者之间显著差异（P〈0．05）。发情期LH的脉冲周期短于间情期，两者之间差异不显著（P〉0．05）。在整个发情周期中，FSH和LH均先后出现4个分泌峰，FSH和LH的第1个分泌峰分别出现在第7天和第5天，其余3个分泌峰均同时出现（分别为第10、15和20天）。E2和FSH、LH均在发情周期的第20天迭最高峰。P在间情期一直维持在一个较高水平。  相似文献   

Plasma concentrations of inhibin A in cattle with follicular cysts: relationships with turnover of follicular waves and plasma levels of gonadotropins and steroid hormones     

Todoroki J  Noguchi J  Kikuchi K  Ohnuma K  Ozawa M  Kaneko H 《Domestic animal endocrinology》2004,27(4):333-344

We investigated the profiles of circulating levels of inhibin A and total inhibin in beef cows with follicular cysts in relation to the patterns of follicular development and circulating gonadotropins and steroid hormones. Turnover of follicular waves was monitored in five cows every 2 days for 70 days from 10 days after detection of estrus without ovulation. The mean interwave intervals were 19.6 ± 1.0 days (n = 18 waves with cysts from the five cows). Circulating levels of inhibin A were approximately 170 pg/ml before emergence of follicular waves with cysts and increased (P < 0.05) concomitantly with follicle emergence. High concentrations of inhibin A (greater than 300 pg/ml) were noted for 7 days during the growth phase of cystic follicles, but inhibin A levels decreased gradually when development of the cysts reached a plateau. This profile of inhibin A was similar to those of total inhibin and estradiol, but was inversely related to the changes in plasma FSH concentrations. LH pulse frequency and mean concentrations of LH in cows with cysts were higher than those observed in the luteal phase of normal cyclic cows. These results indicate that the capacity to secrete inhibin, as well as estradiol, is maintained in cystic follicles, the growth of which is extended by LH secretion at levels greater than those seen in the normal luteal phase. Inhibin A plays an important role in the extension of interwave intervals by suppressing recruitment of a new cohort of follicles.  相似文献   

改进山羊超数排卵方法的研究   总被引：18，自引：0，他引：18  

岳奎忠  于元松  周佳勃  李子义  孙兴参  曹允考  谭景和 《东北农业大学学报》2000,31(1):72-76

实验以黑龙江地方山羊为实验材料 ,应用国产激素研究了单纯使用 FSH和 FSH结合PMSG,以及氯前列烯醇 (PG)和孕酮 (Pr)的超排和发情同步效果。结果显示 ,单纯用 FSH处理的山羊 (N=6 )平均排卵 6 .83± 1.19个 ,平均获卵 5.83± 1.0 1个 ,获卵率在 85.30 % ;用 FSH结合 PMSG处理的母羊 (N=17)平均排卵 13.94± 1.11个 ,平均获卵 10 .59± 0 .97个 ,获卵率为 78.2 0 % ;t检验证明 ,两种处理山羊的排卵和获卵数差异均显著 (P <0 .0 5) ;说明 FSH与PMSG联合使用大大提高了山羊的排卵和获卵数。尽管 PG和 Pr两种同步发情方法都使山羊在开始超排处理后 72到 96 h之间发情 ,但用 PG处理的超排山羊 (N =2 0 )发情时间更为集中 ,大多数 (70 % )都于注射 PG后 2 4～ 30 (开始超排处理后 72～ 78) h开始发情。注射 h CG(发情 )后2 4～ 30 h,70 %以上的卵母细胞都具有第一极体 ,为新排的卵母细胞 ;到 h CG后 36～ 4 0 h,只有不到 4 0 %的卵子有第一极体  相似文献   

无角陶赛特羊超数排卵技术研究     

席强 《畜牧兽医杂志》2014,33(6):33-35

为了探索FSH剂量和不同超排处理方法对无角陶赛特羊超数排卵的效果,分别用总剂量为120 IU、180 IU、240 IU和300 IU四个剂量水平的FSH进行超数排卵.结果表明：240 IU的FSH对无角陶赛特羊的超排效果最好,回收胚胎数和可用胚胎数显著高于120 IU（P≤0.05）,同时效果也明显优于120 IU和180 IU剂量组;两种超排方案FSH＋PG和CIDR＋FSH进行超数排卵对无角陶赛特羊排卵数、回收胚胎数以及可用胚胎数之间无显著差异（P＞0.05）.  相似文献   

无角道塞特绵羊超数排卵技术研究          下载免费PDF全文

权富生  赵晓娥  张志平 《西北农林科技大学学报(自然科学版)》2005,33(12):1-5,12

采用国内不同厂家生产的促卵泡刺激素(FSH)和加拿大进口的FSH,进行了无角道塞特母羊超排 处理,对不同给药方式、首次超排与重复超排、经产羊与青年羊、春季超排与秋季超排、自然发情与诱导发情及未知 发情周期的超排效果进行了对比研究,同时研究了母羊卵巢黄体退化、有无卵泡及推迟发情对超排效果的影响。结 果表明,加拿大进口FSH的超排效果最好,国产FSH以宁波+中科院激素组合的超排效果较好;重复超排对超排 效果无显著影响;经产羊的超排效果优于青年羊;自然发情母羊的超排效果优于诱导发情母羊和未知发情周期母 羊;黄体退化母羊回收可用胚的数量明显较低;卵巢上有无卵泡对超排效果无影响;推迟发情母羊的超排效果明显 低于正常发情母羊。  相似文献