奶牛瓣胃阻塞(百叶干)验方

我街道北新村村民养的母牛，5岁，2003年3月2日就诊。     

母牛干奶期的缩短(综述)

近来有许多奶牛营养专家和研究人员推荐取消母牛的干奶前期,即延长三周的时间让母牛继续挤奶,然后将母牛直接置于产前35～40天的干奶后期。不断有研究机构表示,少于60天的干奶期对下一泌乳期的产量不存在负面影响。     

大白菜品种苗期抗干烧心(缺钙)鉴定

采用缺钙的改良HoagLand营养液无土培养，在温室内对北京新一号等23个大白菜品种及自交系成功进行了苗期人工诱导大白菜干烧心病的发生，进一步研究和完善了大白菜干烧心病抗性的室内苗期鉴定方法。通过对大白菜不同品种苗期发生干烧心程度的比较，筛选出了对干烧心抗、感程度不同的标准品种。     

固体水室内盆栽育苗试验

应用室内盆栽育苗法,对8种乔木和灌木用加固体水、不浇水、每株每周浇70ml水3种处理方法的试验结果表明:在60d的试验期内,使用固体水与不浇水比较,土壤含水量增加3~6倍。与每周浇70ml水比较,土壤含水量增加2~3倍。植株成活率从0增加到66.7%~100%。可见使用固体水对提高土壤含水量,提高植物幼苗成活率是非常有效的。     

干细胞工程(续)--生命科学中的一个热点

(上接2003年第3期P11)3．2．2 干细胞增殖系统的自稳定性(self-maintenance)：干细胞基本特征之一是其可以在生物个体生命中的自我更新(self-renewing)并维持其自身数目恒定，即自稳定性。当干细胞分裂时，如两个子代细胞都是干细胞或都是分化细胞时，称对称分裂(symmetry division)；如     

干玉米秸秆与干羊草营养价值的比较研究

对不同保存方式的干玉米秸秆及干羊草的营养价值进行比较,结果表明:干玉米秸秆的粗蛋白含量低于干羊草(除立枯羊草外);干玉米秸秆中性洗涤纤维低于干羊草;干玉米秸秆上2/3部分酸性洗涤纤维高于干羊草;干玉米秸秆的消化率和代谢能均高于干羊草。综合分析表明:在秸秆资源丰富,草地退化严重的东北农牧交错区,玉米秸秆作为饲料具有很高的利用价值。     

谈防治奶牛百叶干(瓣胃阻塞)的体会

百叶干是中医对瓣胃阻塞的称呼。根据笔者在奶牛场数十年工作的经验体会，百叶干在奶牛的前胃疾病中，是一种比较严重的胃脏疾病。可以这样说，前胃弛缓、瘤胃积食是奶牛疾病中比较常见的内科病，只要治疗及时和疗法得当，一般是比较好治的，但是病一旦发展到了瓣胃，则治疗效果、预后就不容乐观了。     

三化水对蛋鸡和雏鸡生产性能的影响

用自来水、温开水及三化水（净化磁化矿化）饲喂１至８周龄的雏鸡，试验表明：饮用温开水和自来水，雏鸡的体增重、成活率、均匀度之间差异不显著（Ｐ＞０．０５）；而饮用三化水的雏鸡与饮用自来水和温开水的雏鸡在增重、成活率及均匀度上存在极显著差异（Ｐ＜０．０１）。用自来水和三化水饲喂４６至７２周龄的蛋鸡，结果表明：蛋鸡在产蛋率、料蛋比及存活率上差异极显著（Ｐ＜０．０１）。     

干番茄渣在蛋鸡饲料中的应用

本文旨在研究用干番茄渣（DTP）部分或全部替代大豆、玉米、小麦、麦麸饲料时，对蛋鸡生产性能、蛋品质的影响。将288只试验鸡（27—38周龄）随机分成4组，每组72只．分别为：DTP0（对照组）、DTP50、DTP100、DTP150（每吨饲料中分别含0、50、100、150kg DTP）。与对照组相比．DTP100组使其产蛋量、产蛋总重分别增加2．7％、4．1％．而鸡的体重、蛋重、日消耗饲料量、蛋壳重、蛋壳厚、哈夫单位、蛋黄颜色均与对照组相似。DTP150组使产蛋量、产蛋总重分别降低3．6％、3．0％，但饲料转化率增加2．9％。结果表明．DTP可以作为蛋鸡的饲料原料。     

紫花苜蓿施用磷肥试验研究

本文用不同施用量的磷肥对紫花苜蓿进行了试验研究,结果表明,磷肥对苜蓿有显著的增产效果。用LSR 法统汁分析,最佳处理为80kg/亩;经回归分析建立了苜蓿产草量与施肥量的关系式:Y=2576.1812+10.5395X-0.0581X~2,最高产量施肥量为90.7kg/亩,最佳经济效益施肥量为71.9kg/亩。     

精料补充料在家兔日粮中的应用研究

选择35日龄左右、健康无病的齐卡大型白兔120只,随机分为4组,分别饲喂全价饲料和3种不同营养水平的精料补充料,观察其采食量、日增重和成活率。结果表明:饲喂青草加精料补充料较饲喂全价饲料成本低。而精料补充料以消化能12.76MJ/kg、粗蛋白19.28%、粗纤维6.21%的营养水平饲喂效果最佳。     

FEASIBILITY OF ENDOSCOPIC RETROGRADE CHOLANGIOPANCREATOGRAPHY IN HEALTHY CATS

Cats are predisposed to diseases of the biliary tract and the exocrine pancreas and these can be challenging to diagnose. In humans and dogs > 10 kg, endoscopic retrograde cholangiopancreatography (ERCP) has been successfully used to diagnose some of these disorders. The purpose of our study was to determine whether ERCP would also be feasible in cats using a pediatric duodenoscope. Four purpose‐bred, clinically healthy, castrated domestic shorthair cats participated in two studies. Study 1 compared standard white light endoscopy with chromoendoscopy for localizing the major duodenal papilla. In Study 2 ERCP was performed. Repeated clinical examinations and measurements of serum feline pancreatic lipase immunoreactivity (fPLI) were performed before and up to 18 hours after interventions on all cats. Chromoendoscopy was subjectively judged to be superior for localizing the major papilla. Insertion of the ERCP catheter was best accomplished when cats were in dorsal recumbency. Complete ERCP was successful in two cats. In the other cats, either retrograde cholangiography or pancreatography was possible. Serum fPLI concentrations increased temporarily in two cats during Study 2 when measured immediately, 2, 4, and 18 h after ERCP. Peak fPLI concentrations were detected either immediately after ERCP or 2 h later. No clinical signs of complications were observed within 18 h after the procedures. Findings indicated that ERCP is technically demanding but feasible in healthy cats. Future studies need to determine whether the temporary increases in serum fPLI concentrations are clinically important and to investigate the utility of ERCP in feline patients.     

青海草地应用喷施宝增产效果

利用喷施宝肥料对天然草地、人工草地、饲料作物燕麦不同生长期进行不同浓度的叶面喷施试验．结果表明,除饲用燕麦施用每公顷112．50ml较大量的喷施宝在当年对作物具有抑制作用外,施用每公顷75.00ml～112．50ml的喷施宝对天然草地和人工草地牧草都具有显著的增产效果。     

饲草饲料应用增产菌的效果

１９９４年在科左后旗３个不同地区对饲草，饲料进行大面积应用增产菌效果试验，结果表明，饲料玉米拌种区产草量比对照区提高１５．０７％～１６．２０％，株高比对照区增高４～５ｃｍ叶面积增加１３．７４％～１８．７０％，天然草场人工草地喷施区比对照区产草理提高７．４３％～１５．０％，株高比对照区增高３～１９ｃｍ，叶面积增加９．９７％～１８．７０％。     

农用型高吸水性树脂对紫花苜蓿生长状况影响试验

采用紫花苜蓿种子拌不同浓度的农用型高吸水性树脂(SAP)进行播种试验,结果表明,经农用型高吸水性树脂拌种后的紫花苜蓿其出苗时间比对照提前,而且每平方米平均有苗数比对照增加,各处理间平均植株高度、鲜草产量差异显著(P<0.05)。     

FEASIBILITY OF PERCUTANEOUS CONTRAST ULTRASOUND‐GUIDED CHOLECYSTOGRAPHY IN DOGS

Differentiating hepatocellular disease versus biliary obstruction can be challenging in dogs presented for icterus. The purpose of this prospective study was to determine the feasibility of percutaneous contrast ultrasound‐guided cholecystography in dogs. Ten normal dogs weighing 7.6–13.0 kg (median 9.8 kg) were recruited. All dogs were considered normal based on complete blood count, serum chemistry profile, ultrasound examination, and percutaneous radiographic cholecystography. Percutaneous contrast ultrasound‐guided cholecystography was performed using 0.5 ml of commercially available contrast agent and two conventional ultrasound machines for simultaneous scanning at two different locations. Two observers independently evaluated the time to initial detection of contrast in the proximal duodenum and duration of contrast enhancement via visual monitoring. Dynamic contrast enhancement was calculated using time‐intensity curves. Mean (±SD) and median (range) of time to initial detection were 8.60 s (± 3.35) and 8.0 s (2.0–11.0), respectively, and mean and median duration were 50.45 s (±23.24) and 53.0 s (20.0 – 70.0), respectively. Mean, median, and range of peak intensity were 114.1 mean pixel value (MPV) (SD ± 30.7), 109.2 MPV, and 79.7–166.7, respectively, and mean, median, and range of time to peak intensity were 26.1 s (SD ± 7.1 s), 24.0 s, and 19.0–41.0 s, respectively. Findings indicated that percutaneous contrast ultrasound‐guided cholecystography is a feasible technique for detecting and quantifying patency of the bile duct in normal dogs. Future studies are needed to assess the diagnostic utility of this technique for dogs with biliary obstruction.     

金融资产管理公司商业化转型之路的探讨

分析了金融资源管理公司即AMC出现的背景、作用和意义。通过对AMC改革与发展前景及转型模式的分析与选择，对AMC转型中需要着力解决的若干关键问题作深入研究和分析，旨在探索AMC的商业转型之路。     

黄土高原苜蓿草业基地组建的可行性分析

从黄土高原地区农业生产的实际出发，结合苜蓿的生物学特性及其国内外市场前景，分析了在本区组建苜蓿草业基地的必要性及可能性。指出组建苜蓿草业基地是本区农业实现水旱并举增进农业可持续发展能力的重要途径。     

FEASIBILITY AND SAFETY OF CONTRAST‐ENHANCED ULTRASOUND IN THE DISTAL LIMB OF SIX HORSES

Vascular alterations play important roles in many orthopedic diseases such as osteoarthritis, tendonitis, and synovitis in both human and equine athletes. Understanding these alterations could enhance diagnosis, prognosis, and treatment. Contrast‐enhanced ultrasound (CEUS) could be a valuable method for evaluation of blood flow and perfusion of these processes in the equine distal limb, however no reports were found describing feasibility or safety of the technique. The goal of this prospective, experimental study was to describe the feasibility and safety of distal limb CEUS in a sample of six horses. For each horse, CEUS of the distal limb was performed after intravenous injections of 5 and 10 ml, as well as intra‐arterial injections of 0.5 and 1 ml contrast medium. Vital parameters were monitored and CEUS images were assessed qualitatively and quantitatively for degree of contrast enhancement. None of the horses had clinically significant changes in their vital parameters after contrast medium injection. One horse had a transient increase in respiratory rate, and several horses had mild increases of systolic blood pressure of short duration after intravenous, but not after intra‐arterial injections. Intra‐arterial injection was possible in all horses and resulted in significantly improved contrast enhancement both quantitatively (P = 0.027) and qualitatively (P = 0.019). Findings from this study indicated that CEUS is a feasible and safe diagnostic test for evaluation of the equine distal limb. Future studies are needed to assess the clinical utility of this test for horses with musculoskeletal diseases.