共查询到20条相似文献,搜索用时 15 毫秒
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本文介绍了TRIPS协定的产生、基本目标及原则、主要特点和争端解决机制,论述了TRIPS协定对知识产权的保护范围与我国兽药知识产权保护的关系,探讨了在TRIPS协定框架下需要研究的兽药知识产权保护方面的一些问题。 相似文献
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过去的20年,磷的消化性研究已经占领了动物营养科学界研究的较大一部分,特别是在成功引进第一个商用磷酶(植酸酶)后.
如今,大家普遍认为,在家禽或猪日粮中加入适当的植酸酶,能够降解日粮中大量的植酸(植物源性)磷.
植酸酶是一种不可消化的磷,在不使用外源性植酸酶(动物不分泌这种酶)的情况下它会被排入环境中. 相似文献
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The relationship of right ventricular hypertrophy, right ventricular failure, and ascites to weight gain in broiler and roaster chickens 总被引:6,自引:0,他引:6
Nine hundred twenty-five male progeny from 50 sire families of a commercial sire line were weighed at 14, 28, and 47 days and scored for right ventricular hypertrophydilation at 48 days. Broilers with marked hypertrophy of the right ventricle at processing (298 of 925) were significantly heavier than their more normal contemporaries at 14 and 28 days of age. These results suggest that rapidly growing broilers are more susceptible to increased pulmonary arterial pressure resulting in right ventricular hypertrophy, right ventricular failure, and ascites than slower-growing broilers. Thirty-five (3.5% of 997) broilers died from right ventricular failure and ascites, and 14 (1.5% of 925) has ascites at processing. Two hundred fifty-nine sibs were kept on full feed to 16 weeks of age. Between 7 and 16 weeks, 68 (26.3%) of these cockerels died from right ventricular failure and ascites and a further 27 (10.4%) had marked right ventricular hypertrophy-dilation when processed at 16 weeks. Thus most of the 298 broilers classified as having marked right ventricular hypertrophy at 7 weeks would likely have died from right ventricular failure and ascites if they had been kept on full feed until 16 weeks. 相似文献
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Diagnosis of right coronary artery to right atrial fistula in a dog using two-dimensional echocardiography 总被引:1,自引:0,他引:1
G. J. Jacobs C. A. Calvert D. G. Hall M. Kraus 《The Journal of small animal practice》1996,37(8):387-390
A five-year-old boxer dog developed cardiac murmurs, complete heart block and car-diomegaly associated with vegetative bacterial endocarditis. Using two-dimensional echocardiography, vegetative lesions of the aortic valves and extension of the vegetations into the proximal right coronary artery and adjacent atrial septum were identified. The vegetation within the atrial septum appeared as a cavitated mass which protruded into the right atrium. Fistulae within the atrial septal vegetation permitting communication between the coronary artery and right atrium were observed with colour Doppler echocardiography. The dog died despite medical treatment. Post mortem examination confirmed the echo-cardiographic findings. Vegetative endocarditis with invasion into the right coronary artery and atrial septum producing fistulae and communication with the right atrium has not been reported previously in dogs. Doppler echocardiography proved useful in demonstrating the abnormal anatomy, intraluminal fistular blood flow and its communication with the right atrium. 相似文献
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应用Web技术、JAVA语言和数据库技术在国际互联网上构建草原资源信息共享平台,解决草地资源及其生态环境的多元信息在国际互联网上集成应用和共享技术,为政府和业界提供一个草地资源多元信息查询的基础科学数据平台和数据分析、研究平台。通过搜集前人研究所取得的基础空间数据和属性数据,从当前卫星遥感影像提取动态信息,应用GIS原理和JAVA语言,集成多元图层及属性数据,开发专用的软件,在Internet上建立草地资源信息共享平台,来构建草原生态系统的虚拟多维空间,从而实现空间—属性双向复合查询,适时更换图件等主要功能。经查阅大量资料表明,应用现代地理信息系统技术、数据库技术、网络技术、软件技术和遥感技术以及系统开发语言(JAVA语言)来构建草原生态系统的虚拟多维空间的方案切实可行,能够为业界提供一个方便、快捷的信息查询和空间分析共享平台,对实现我国数字草原具有重要意义。 相似文献
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