Evidence-based veterinary medicine: what it is, what it isn't and how to do it

EBM represents a more formal process for considering the merits of published research in the context of clinical decision making. By combining the application of formal rules of evidence in evaluating the clinical literature (critical appraisal) with the ability to conduct efficient and effective literature searches, any clinician is able to keep current on topics of interest. Learning the core skills that enable the practice of EBM is easier than expected. The EBM Working Group published a series of Users' Guides to enable clinicians to learn critical appraisal of the primary literature in a systematic fashion. The complete series of Users' Guides is available free of charge over the web (www. CCHE.net). Similarly, PubMed, which contains a number of easy to use search filters (Clinical Queries) that can identify high-quality papers published in key veterinary journals, is also available free of charge over the web (www.PubMed.org). How ever one obtains the core skills, an efficient, structured approach to the practice of EBM can actually reduce the amount of time one requires to keep current by helping the user locate and identify methodologically rigorous research. Although the entire process can be self-taught, as with any new technique, other effective ways to bring these new skills into your practice setting include attending a conference workshop or even hiring a new graduate who has already been trained in the process.     

蛋壳变薄与着色异常的原因

蛋壳异常主要表现为蛋壳变薄,色泽变浅,出现砂皮蛋、钢皮蛋等。一、蛋壳变薄的原因及防治 1.日粮中钙的含量不足 蛋壳的主要成分是碳酸钙,约占94％,蛋鸡产蛋期每天摄入的钙主要是满足产蛋的需要,一只鸡每天约需钙3-3.5克,过低过高都会影响蛋壳质量。因此,在产蛋期必须选择含钙量较高的饲料,且补充的钙盐有利于机体的吸收。     

雏鸡死亡原因分析及对策

我市一养鹅专业户，饲养肉鹅1500只，购进后按照程序进行免疫，预防过小鹅瘟，鹅副粘病毒、禽流感等疾病，采用塑料大棚网上饲养的方式进行饲养，用自配料，其中麦麸占15％，米糠占85％进行饲喂。     

Comparative approach to health maintenance: how will it work?

A prototype for the implementation of a comprehensive health maintenance program is described in which the expertise of veterinary medicine is brought to bear on preventive medicine and on special generic environmental disease factors as they impact on human health. For the sake of organization and the ease of presentation, certain specific activities have been divided into two overlapping categories: environmental health and health education. The implementation of a comprehensive health care delivery system will become a reality only when the full array of health resources is matched with health needs. It cannot be overemphasized that the delivery of health care services is not exclusively within the purview of any one profession; rather, interdependence and sharing of responsibilities and activities in a team approach are characteristics of the human health system.     

斜纹夜蛾的发生与防治

斜纹夜蛾属鳞翅目夜蛾科 ,又名莲纹夜蛾 ,是为害蔬菜和桑树等作物的杂食性害虫。近年来在桑园内时有发生 ,局部地区为害严重 ,幼虫食害桑叶 ,能将整株叶片全部吃光 ,仅剩叶脉 ,对蚕桑的生产影响很大 ,且有不断扩展和日趋加剧的倾向 ,应引起足够的重视。现将有关情况报道如下。1　形态特征1.1　成虫 :体长 1 4∏ 2 0 mm,头、胸、腹均深褐色 ,胸部有白色丛毛 ;前翅灰褐色 ,内横线及外横线灰白色 ,呈波浪形 ,环状纹不明显 ,肾状纹前部呈白色 ,后部黑色 ,环状纹与肾状纹之间有 3条白线组成明显的斜纹 ,故名斜纹夜蛾 ;后翅白色 ,仅翅脉及外缘呈暗…     

禽流感流行新特点及防制对策

国际兽疫局(OIE)将口蹄疫、猪瘟、新城疫和禽流感列为A类(Ⅰ类)烈性传染病.禽流感是一种见于世界范围的禽类疫病,至今世界上许多国家都发生过,高致病性禽流感的暴发和流行常给养禽业造成巨大的经济损失,有的甚至是毁灭性的,因此各国十分重视此病.     

谈"假母鸡"的成因及预防

笔者近期在泾阳县境内几个养鸡相对密集的乡镇，遇到许多蛋用商品代鸡群中出现了假母鸡，并且发生范围不断扩大，数量呈直线上升。假母鸡占所在群数的20％左右，严重影响群体的产蛋量和经济效益，对当地笼养鸡的稳定发展造成较大的影响。