新疆南疆绒山羊高产不孕羊诱导发情效果分析

为了挖掘优秀南疆绒山羊的繁殖潜力,充分利用其产绒量高的生产性能,我们采用"炔诺酮阴道栓 促卵泡素 氯前列烯醇"的诱导发情处理方法,对280只生产性能高而长期不发情的南疆绒山羊进行了诱导发情处理.试验将280只南疆绒山羊随机分为三个处理批次,其中第一批次100只,第二批次100只,第三批次80只.记录分析了发情同期率、发情持续时间和发情开始时间.结果发现南疆绒山羊发情同期率为31.79%,从撤除阴道栓到发情的间隔时间平均为43.82 h,发情羊只的平均发情持续时间为43.69 h.表明采用该诱导发情的方法可以使部分优秀南疆绒山羊恢复发情排卵,从而达到充分利用其生产性能的目的.     

孕酮海绵栓制剂对提高波尔山羊繁殖率的研究

波尔山羊发情不明显。为此我们自行设计了孕酮阴道海绵栓制剂 ,在四个波尔山羊种羊场进行人工诱导发情试验研究 ,结果表明 ,配合注射FSH、hCG等药物 ,孕酮阴道海绵栓制剂可有效地诱导母羊发情 ,在发情季节和乏情季节的发情率分别为 85.7%、83% ,哺乳母羊和断乳母羊的发情率分别为 33%、1 0 0 % ,长期不发情的母羊发情率为 85% ,且发情母羊的情期受胎率为 1 0 0 %。配合FSH递减法可有效地诱导超数排卵 ,4只成年母羊共收集到 4 3枚可用胚胎 ,超排效果明显     

孕酮海棉栓制剂对提高波尔山羊繁殖率的研究

波尔山羊发情不明显。为此我们自行设计了孕酮阴道海绵栓制剂,在四个波尔山羊种羊场进行人工诱导发情试验研究,结果表明,配合注射ＦＳＨ、ｈＣＧ等药物,孕酮阴道海绵栓制剂可有效地诱导母羊发情,在发情季节和乏情季节的发情率分别为８５．７％、８３％,哺乳母羊和断乳母羊的发情率分别为３３％、１００％,长期不发情的母羊发情率８５％,且发情母羊的情期受胎率１００％。配合ＦＳＨ递减法可有效地诱导超数排卵,４只成年母羊共收集到４３枚可用胚胎,超排效果明显。     

奶山羊乏情期诱导发情效果研究

为使处于乏情期的奶山羊发情,采用孕酮阴道释放装置和孕马血清促性腺激素(PMSG)处理对三原莎能奶山羊种羊场的73只母羊进行诱导发情。试验羊分为三组,将含有孕激素的阴道栓置于试验羊阴道中9d,分别在撤栓前48h、撤栓前24h和撤栓同时(即Oh)配合肌肉注射PMSG 300 IU/只,研究孕马血清促性腺激素不同使用时间的诱导发情效果。结果三组羊的发情率分别为52.63%、78.79%和85.71%;同期率分别为42.11%、69.71%和76.19%,三者差异显著(P<0.05);羊只的发情时间集中在撤栓后48 h左右,以48 h为峰值呈现正态分布;发情羊发情持续时间分别为34.81 h、36.46 h和30.67 h。试验结果表明在撤栓同时配合肌肉注射PMSG的发情率和同期率最高,发情持续期最短,是可以在奶山羊生产中应用的诱导发情程序。     

不同生理状态细毛羊非繁殖季节诱导发情试验

利用孕酮阴道海绵栓(CIDR) PMSG HCG法分别对中国美利奴羊肉用品系的两种不同生理状态母羊:断奶和空怀母羊进行诱导发情处理,并对发情效果、产羔效果进行比较。统计分析表明,断奶母羊组和空怀母羊组的发情率分别为64%,48.3%,断奶母羊组发情率极显著高于空怀母羊组(P<0.01);断奶母羊组和空怀母羊组的双羔率、三羔率分别为10%、3%和1.1%,断奶组的多胎率极显著高于空怀母羊组(P<0.01)。结果表明,断奶母羊诱导发情效果明显优于空怀母羊。     

应用激素调控绵羊繁殖生产之初探

为探索应用激素调控绵羊繁殖生产,诱导绵羊非繁殖季节发情配种,挑选细毛羊和部分土种羊经产母羊共计257只,分成三组,即Ⅰ组70只细毛羊,第Ⅱ组157只细毛羊和Ⅲ组30只土种羊,用外源促性腺激素进行诱导发情处理,结果Ⅰ组产羔率达到了51.43%,比Ⅱ组的产羔率32.48%高出18.95个百分点(P<0.01),比Ⅲ组的6.67%高出44.76个百分点(P<0.01),Ⅱ组比Ⅲ组高出25.81个百分点(P<0.01)。研究表明应用生殖激素对细毛羊在非繁殖季节实施诱导发情是可行的,土种羊对外源促性腺激素的应答没有细毛羊敏感。     

利用同期发情技术对和田羊繁殖效果的试验研究

本试验采用阴道埋置孕酮海绵栓＋肌肉注射PMSG法和肌肉注射PC法对处于正常发情周期内的策勒黑羊进行同期发情处理,再进行人工授精技术后直至产羔,对母羊的发情率进行分析。结果表明,经过处理后的母羊发情时间集中,周岁母羊发情率提高了23．5％,成年母羊发情率提高了13．6％．周岁母羊受胎率提高了51．5％,成年母羊受胎率提高了27．4％,极显著提高（P〈0．01）。本试验针对和田策勒县专业户,采用同期发情、人工授精等技术处理方法,为提高策勒黑羊产羔率和优化生产提供试验依据。     

氟孕酮阴道海绵栓处理广西水牛同期发情试验

利用国产氟孕酮阴道海绵栓（牛欢）结合雌二醇、氯前列醇钠处理本地水牛,诱导同期发情,4次处理的同期发情皋分别为50％,70％,83．33％,50％。移植IVF胚胎后60d直肠检查受孕情况,无一头母水牛妊娠。     

应用CIDR＋PG诱导黄牛同期发情的试验研究

应用“CIDR＋PG”对新疆克拉玛依市乌尔禾地区的156头本地黄牛进行同期发情处理．且分为A、B两组,采用放牧加补饲的饲养方式。统计结果是：以“CIDR＋PG”处理后的母牛同期发情率平均为89．54％。用细管冻精对发情母牛直肠把握法人工授精,一个情期2次输精,中间间隔8-12h,早期妊娠检查结果发现这些受配母牛的情期受胎率高达85．70％。该试验表明,应用CIDR和PG协同诱导黄牛同期发情具有良好的效果。     

非繁殖季节绵羊同期发情试验

为评估绵羊在非繁殖季节同期发情效果,近三年来,我们连续在绵羊的非繁殖季节,利用同期发情、人工授精技术,对绵羊繁殖生产进行了调控试验,并与同年度繁殖季节绵羊同期发情繁殖效果进行了对照比较.结果对指导今后绵羊秋冬羔生产和高频繁殖具有重要意义.     

New puncture technique for TIPSS (transjugular intrahepatic portosystemic stent shunt)]

To establish a safer puncture method for TIPSS (Transjugular Intrahepatic Portosystemic Stent Shunt), we developed a new percutaneous puncture technique to penetrate portal and hepatic vein trans-hepatically under ultrasonography (US technique). Experimentally we compared this technique with conventional transjugular technique puncturing portal vein through hepatic vein using Ross needle (Ross Needle technique). Success rate is 100% in US technique and 50% in Ross needle technique. Seven complication including intraperitoneal bleeding occurred in Ross needle technique, but no complication in US technique. Conclusively, US technique is a safer and more reliable method than that using Ross needle in the puncture method for TIPSS.     

凝聚胺技术在交叉配血、抗体筛选中的应用探讨

目的　探讨凝聚胺技术在交叉配血、抗体筛选中的作用。方法　利用凝聚胺技术与常规技术分别检测临床病人配血不合标本 ,临床反复输血产生抗体病人标本 ,发生输血反应标本和正常献血者标本 ,比较二者的优缺点。结果　凝聚胺技术较常规检测技术灵敏 10～ 2 0 %。结论　凝聚胺技术检出免疫性抗体的能力以及其特有的快速、简便 ,高度灵敏性 ,对临床免疫输血中有重要作用     

A combined transglenoid and suture anchor technique for bony Bankart lesions

We present a modified hybrid technique that is a combination of a transglenoid and suture anchor technique. Three-dimensional CT reconstruction is indicated for patients with bony fragments larger than 10 mm. First, a transglenoid technique is performed to reduce the bony fragment and then a suture anchor technique is performed to achieve a stable fixation. This combined technique is a useful arthroscopic procedure for the easy reduction and stable fixation of bony Bankart lesions.     

A noncomputerized count-based technique for the determination of resting left ventricular ejection fraction

A noncomputerized, count-based technique for the determination of left ventricular ejection fraction (LVEF), which does not use geometric assumptions of left ventricular shape, was developed. The noncomputerized technique and computerized multigated ventriculography using both fixed and variable region-of-interest (ROI) methods were performed on 16 patients. The LVEFs obtained with the noncomputerized technique correlated well with both the fixed ROI computerized technique (r = .87) and the variable ROI computerized technique (r = .86). It is concluded that when a computer is not available, the noncomputerized technique is a valid alternative for the determination of LVEF in resting patients in stable sinus rhythm.     

Capillary versus aspiration biopsy: Effect of needle size and length on the cytopathological specimen quality

Purpose To test the value of the nonaspiration, or capillary, biopsy technique by experimental comparison with the conventional fine-needle aspiration technique using various needle gauges and lengths. Methods On fresh hepatic and renal tissue from five autopsies, multiple biopsy specimens were taken with 20, 22, and 23-gauge Chiba needles of 5, 10, 15, and 20-cm length, using the aspiration technique and the capillary technique. The resultant specimens were graded on the basis of a grading scheme by a cytopathologist who was blinded to the biopsy technique. Results The capillary technique obtained less background blood or clot which could obscure diagnostic tissue, although not significantly different from the aspiration technique (p=0.2). However, for the amount of cellular material obtained, retention of appropriate architecture, and mean score, the capillary technique performed statistically worse than aspiration biopsy (p<0.01). In addition, with decreasing needle caliber (increasing needle gauge) and increasing length, the capillary biopsy was inferior to the aspiration biopsy. Conclusion The capillary biopsy technique is inferior to the aspiration technique according to our study. When the capillary technique is to be applied, preference should be given to larger caliber, shorter needles.     

Radiographic examination of the temporomandibular joint using cone beam computed tomography

Cone beam CT (CBCT) is a new technique for maxillofacial imaging. We describe a reconstruction technique for radiographic examination of the temporomandibular joint (TMJ) using CBCT, and we further present four cases where the technique was employed. The technique provides a complete radiographic investigation of the bony components of the TMJ. The reconstructed images are of high diagnostic quality. The examination time is shorter and the patient dose is lower than that with conventional CT. It may therefore be considered as the imaging technique of choice when investigation of bony changes of the TMJ is the task at hand.     

Clinical Utility of the Modified Snare Technique for Percutaneous Antegrade Removal of Double J Ureteral Stents

Although a snare is the commonly used device for antegrade double J (DJ) stent removal, there are some cases in which DJ stent removal using only a snare is particularly difficult. In the present study, an unfavorable positioning of the proximal DJ stent tip and tip embeddedness were significantly associated with a simple snare technique failure; thus, present the modified snare technique to overcome the simple snare technique failure. By applying these 2 techniques together, we can increase the overall technical success rate up to 97% (196/202). The modified snare technique is safe and effective in cases of simple snare technique failure.     

Multiple simultaneous percutaneous needle biopsy (MSPNB) technique for masses of the abdomen and peritoneum

A technique for the biopsy of abdominal masses consisting of the simultaneous insertion of multiple needles is described. This technique was employed in 45 patients. The results were compared with the author's preceding experience with 32 cases performed with a conventional technique of sequential biopsies. Adequate specimens were obtained in 42 (93.3%) cases with the multiple simultaneous percutaneous needle biopsy (MSPNB) technique. This compares with a diagnostic adequacy yield of 84.3% for the sequential technique. In 25 cases performed under CT guidance, the average CT utilization time was 12 minutes, and the average number of slices was 3, as compared to 45 minutes and 12 slices with the conventional sequential technique. No complications were encountered. We conclude that the MSPNB technique is a safe time- and cost-effective technique with a high yield of adequate and diagnostic specimens.     

Virtual colonoscopy: Utility,impact and overview

Computed tomography (CT) colonoscopy is a well-established technique for evaluation of colorectal cancer. Significant advances have been made in the technique of CT colonoscopy since its inception. Excellent results can be achieved in detecting both colorectal cancer and significant sized polyps as long as a meticulous technique is adopted while performing CT colonoscopy. Furthermore, it is important to realize that there is a learning curve involved in interpreting these studies and adequate experience is essential to achieve high sensitivity and specificity with this technique. Indications, contraindications, technique and interpretation, including potential pitfalls in CT colonoscopy imaging, are reviewed in this article. Recent advances and the current role of CT colonoscopy in colorectal cancer screening are also discussed.     

A modified technique for craniospinal irradiation in children designed to reduce acute and late radiation toxicity

Craniospinal irradiation is an important technique for the treatment of a number of paediatric malignancies. The conventional technique uses photons for all fields and does not exploit the benefits of CT and computer planning systems. The present paper describes a modification of the conventional technique in which both photons and electrons are used for the spinal field (mixed-beam technique). Computed tomography images and a planning computer are used for the selection of field junctions, electron beam energy and dosimetry. The intention of the technique is to reduce radiotherapy toxicity. A discussion of the potential benefits is presented.