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Results from studies performed by the authors and by other workers, have greatly increased the knowledge of canine parvovirus.

The authors review the situation with particular reference to virology, epidemiology, pathogenesis, pathology and immunoprophylaxis.  相似文献   

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我国玉米的生产现状和发展目标   总被引:3,自引:0,他引:3  
玉米是粮食、饲料和工业原料兼用农作物,是我国的第二大粮食作物.2003年以来,在市场的拉动下,我国玉米供求关系由供大于需逐步转向供求平衡甚至供应偏紧的状况,大力发展玉米生产对保障我国粮食安全,增加农民收入,促进国民经济又好又快发展具有重要意义.  相似文献   

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杨革凡 《饲料广角》2004,(18):13-15
饲料是畜牧业发展的物质基础,饲料的质量与动物的生产性能(肉、蛋、奶、皮毛等的数量、质量)密切相关。赤峰市饲料工业起步于上世纪80年代,在广大畜牧和饲料科技人员的共同努力下,已初步建立起包括饲料生产体系、市场管理体系、科研推广体系等在内的相对完善的饲料工业体系,成为我市畜牧业发展中不可缺少的基础性产业。1赤峰市饲料行业发展状况1.1行业基本情况及分析赤峰市是内蒙古自治区重要的畜牧业商品生产基地之一,随着国家西部大开发和生态建设工程的全面实施,畜牧业生产经营方式逐渐由放养向舍饲圈养、由粗放型向集约型转变,为饲料业…  相似文献   

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Nine adult bullocks were used for this study. The auricular artery was found to be convenient for collecting arterial blood samples. Samples were also taken from the jugular and auricular veins. The mean values of blood gas analyses from these animals are recorded.  相似文献   

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Nine adult bullocks were used for this study. The auricular artery was found to be convenient for collecting arterial blood samples. Samples were also taken from the jugular and auricular veins. The mean values of blood gas analyses from these animals are recorded.  相似文献   

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重点论述獭兔商品生产提高质量、发展数量的成功经验.介绍11年来四川獭兔产业化所取得的成就及发展模式.  相似文献   

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重点论述獭兔商品生产提高质量、发展数量的成功经验。介绍 1 1年来四川獭兔产业化所取得的成就及发展模式。  相似文献   

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All animals that are to be killed, whether for food, for humane reasons, or because they are homeless, must receive a quick and painless death. In some smaller communities, veterinary or humane society expertise may not be readily available to humanely kill stray and unwanted animals. An alternative that provides for a humane death for the animal is by shooting. The following guidelines are intended to assist persons who must perform this usually distasteful task; they contain recommended techniques that will help to ensure that any animals killed by shooting will die in a humane way.  相似文献   

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李祥明  杨虎阶  余茂德 《蚕学通讯》2006,26(4):57-58,60
水富县自1992年发展蚕桑以来,曾取得了辉煌的成绩,被确定为云南省蚕桑生产基地县,桑园面积过万亩,养蚕量逐年上升,为全县产业发展和农民增收作出了一定的贡献,但也经历了极其艰难的困境.现在正处在一个是进是退的关键时期,下面就水富县蚕桑产业的现状和发展对策作一些探讨.  相似文献   

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蒋学民 《蚕学通讯》2004,24(3):51-54
蓬安是司马相如故里,位于川东北丘陵地区,总人口68万,辖1个街道办事处和46个乡镇.这里水源充足,交通便捷,是连接南充至广安、重庆的中心腹地,是南充市蚕桑生产基地县.全县现有市、县蚕桑基地乡镇20个.蚕桑业历来是立县的支柱产业,桑树资源极为丰富,蚕桑基础雄厚,曾创下过年发种10万张,产茧280万kg的历史最高记录,蚕农养蚕收入近4 000万元,约占农副业总收入的25%以上.  相似文献   

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A 12-gauge shotgun, loaded with either a solid 28 g lead slug or buckshot consisting of nine individual lead pellets with a total mass of 28 g, was used to shoot the heads of one dead common dolphin (Delphinus delphis) and five dead long-finned pilot whales (Globicephala melaena) varying in length from 2.5 m to 5 m. The dolphin and the smallest pilot whale were shot with both projectiles from the dorsal surface of the head. The projectiles penetrated the head and dorsal surface of the skull, but not the base of the cranium. This site using buckshot was not effective in the larger animals. Two whales between 3 and 4 m in length were shot with buckshot through the lateral side of the head caudal to and above the eye, without penetration of the contralateral side of the head. It is concluded that shooting smaller cetaceans with a shotgun can be effective and safe. Further work is required to develop more suitable projectiles for cetaceans up to the size of mature pilot whales.  相似文献   

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胡云 《饲料广角》2003,(2):21-22
磷酸脲是一种反刍动物矿物质饲料添加剂,能为牲畜提供磷和非蛋白氮两种营养元素。若磷酸脲的生产成本降低,饲料级磷酸脲有一定的发展前景。  相似文献   

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