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1.
禽肉与蛋的生产与消费水平在全世界都在发展,动物蛋白质的需求在发达国家增长幅度平稳,在发展中国家呈现高潮,从而进一步发展禽肉与蛋的生产是可能的. 相似文献
2.
针对动物医学专业形态课的教学特点,笔者对形态课多媒体课件的制作与应用进行了探讨。在课件制作上,应当注重形态学素材的收集与整理,合理编排课件内容,讲求一定的外观设计,同时在制作软件的挑选与使用中把握好适度与适当的原则;在应用多媒体课件教学时,首先要做好传统的课前准备工作,其次在此基础上充分发挥多媒体课件在形态课教学中的优势,最后注意加强与学生之间的交流和互动,提高教学效果。 相似文献
3.
生殖系统药物可以直接调节母牛的发情与排卵,促进生殖细胞在生殖道内的运行,与胚胎的附植与分娩、妊娠、泌乳等都有关。这些年来,随着我国生物科学的发展,市售有很多提纯与合成制剂生殖系统药物,在奶牛繁殖与黄牛改良中起着重要作用。 相似文献
4.
3,2与2头猪,分别感染猪肉孢子虫的孢子囊40,000,80,000与120,000个;另1头猪感染猪人肉孢子虫的孢子囊50,000个。152天后,用IFAT,ELISA与IHA各方法进行了特异性抗体的检查与83天内抗体形成的研究。在感染后14天第一次检查,又在21天与28天分别以IHA,ELISA与IFAT方法检查结果:抗体的最高滴度分别在感染后的 相似文献
5.
剪力墙聚苯板外保温结构是一种保温效果较好的体系。它不仅保温效果好,而且保温层与剪力墙的连接力较强,不影响室内装修,而被推广。双面钢丝网聚苯板在主体施工时用铁丝绑在墙体外层钢筋上放在大模内,使其一面钢丝网与砼直接浇筑在一起,起到了很好的连接作用,但在浇筑砼时,砼的侧压力与振捣力使聚苯板由内层钢丝网层向外层钢丝网发生一定位移,而使局部钢丝网与聚苯板间隙过小,甚至贴紧在一起,致使砂浆层直接抹在聚苯板表面,而聚苯板本身与砂 相似文献
6.
实验动物是一种特殊动物,对科学实验的质量起到决定性作用。兽医在实验动物的工作过程中起着重要作用,实验动物的发展与应用离不开兽医。主要对兽医在实验动物设施建设、运行与管理中的作用、在动物实验的设计与实施中的作用、在实验动物运输管理中的作用、在实验动物福利监督与管理中的作用、在生物安全评价与管理中的作用及在实验动物药品和废弃物管理中的作用进行了介绍。 相似文献
7.
在中兽医方剂组方配伍中蕴含着丰富的相互对应思想,具体表现在方剂配伍中的阴与阳、气与血、脏与腑、升与降、散与收、泻与补、寒与热、润与燥、生与克、行与守十大相对关系,积极探讨中兽医方剂配伍中的相互对应关系,有助于提升中兽医方剂组方配伍规律的进一步认识,对兽医临证立法处方用药有着重要的指导意义。 相似文献
8.
一、犬的交流概况
同种动物之间会交流,在这个以人为主导的世界里,为了更好地生存,不同物种之间也会交流,就像人与犬的交流.最新报道称人类在3.3万年前开始驯化犬,位置是东亚南部地区.在犬与人类相处了3万余年后,犬与人已经能够和谐地在一起生活,虽然犬与人并不懂对方的语言,但通过各自的肢体语言、语音语调、面部表情的表达已经能够读懂对方的意思并灵活的沟通交流.犬与人的关系称为"依恋"关系,类似婴儿与照顾者的关系.犬长期与人类生活在一起,从最初的交流困难到目前双方能够顺利交流且相互依恋,犬与人的跨物种交流能力都得到提升,其结果是双方能够感知理解对方发出的信号并做出正确的反应.在过去的20年,人类越来越重视与犬的交流.调查研究显示犬与人类沟通交流多依赖视觉.事实上,犬在与人类相处的早期阶段就已经显示出对人类的形态、肢体语言、神态表现出高度的敏感性,它们会自发的模仿人类的姿势,注视人所指的方向. 相似文献
9.
论述了水体生态平衡在水产养殖中的重要意义;微生物生态在水体生态平衡中的作用,与微生态的关系;生态防治的特点,微生物生态与微生态制剂在水产养殖中应用情况,有益菌与益生菌问题等。 相似文献
10.
随着人们对畜产品安全意识的不断加强,饲用抗生素与部分化学药物添加剂被禁用已成必然趋势。中草药素有“绿色药物”之称谓,我国政府也在积极推进中药现代化。在这种科技发展形势下,如何在饲料添加剂研究与中医药学的交叉中寻求切入点是一个新的课题。本文从中医理论与现代动物营养学的基本概念与特点出发,结合我国中药资源的现状,就中医药学与动物营养学在学科结合中的问题进行了探讨。 相似文献
11.
In late December 1984, 1853 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1984 and 35% of them responded. Veterinarians reported that 97,794 dogs were blood-tested to check for microfilariae and 1417 dogs (1.45% of those tested) were found with heartworm. Another 34 dogs were amicrofilaremic, but were diagnosed as having heartworm disease, to give the total number diagnosed in 1984 as 1451 (1.48%). Heartworm was reported from all provinces except Prince Edward Island and Newfoundland but most (1310) of the cases were in Ontario. In Quebec, 126 cases were reported mostly from west of Montreal. Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 27% of the cases were observed with clinical signs of heartworm disease and 72% had a history of not having left Canada. Southwestern Ontario continued to be the primary focus of the infection. 相似文献
13.
In late December 1983, 2 800 veterinarians across Canada were sent a questionnaire in order to assess the status of heartworm disease in Canada in 1983 and 26% of them responded. Veterinarians reported that 59 504 dogs were blood-tested to check for microfilariae and 771 dogs (1.30% of those tested) were found with Dirofilaria immitis. Heartworm disease was diagnosed in all provinces except New Brunswick and Newfoundland but most (733) of the cases were in Ontario. Heartworm disease was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 31% of the cases were observed with clinical signs of heartworm disease and 64% had a history of not having left Canada. Southwestern Ontario continues to be the focus of the infection and most of the dogs there had not left the province previously. 相似文献
15.
In late November 1991, 1883 clinics in Canada were sent a questionnaire to assess the status of Dirofilaria immitis in dogs in 1991 and there was a 60.0% response. There were 344,031 dogs tested for heart-worm (HW), 627 were found infected and the prevalence of HW infection was 0.18%. There were 417 dogs with HW in Ontario, 116 in Manitoba, 38 in Quebec, 53 in British Columbia, three in Alberta, and one in Nova Scotia. In British Columbia, all of the infected dogs but one were from the Okanagan valley which, as from 1991, is a new focus of infection in Canada. Most dogs with HW had not been on preventive medication in 1990, and the prevalence among dogs tested and unprotected was 0.59%. That prevalence was considerably higher in endemic areas. Companion dogs, over three years of age and maintained primarily outdoors in rural areas, were most frequently infected. One cat was diagnosed with D. immitis and 33 dogs had Dipetalonema reconditium. 相似文献
16.
In late December 1985, 1485 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1985 and 44% of them responded. Veterinarians reported that 137,300 dogs were blood-tested to check for microfilariae and 1210 dogs were found with heartworm. Another 36 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number diagnosed in 1985 as 1247 (0.91%). Heartworm was reported from all provinces except Prince Edward Island, Newfoundland and Saskatchewan but most (1126) of the cases were in Ontario. Southwestern Ontario continued to be the primary focus of the infection in Canada. From Quebec, 91 cases were reported mostly from and around Montreal. From Manitoba, 19 cases were reported from Winnipeg and surrounding areas. Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 28% of the cases were observed with clinical signs of heartworm disease and 78% had a history of not having left Canada. 相似文献
17.
In late November 1988, 1581 small and mixed animal clinics and institutional veterinarians across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1988, and 46% of them responded. Veterinarians reported that 181,577 dogs were blood-tested for heartworm disease and 367 dogs were found with D. immitis microfilariae. Another 60 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number of cases diagnosed in 1988 as 441 (0.24%). 相似文献
18.
In late November 1989, 1732 clinics and institutional veterinarians were sent a questionnaire to assess the status of Dirofilaria immitis, and 51.7% responded. Of 247,716 dogs tested, 394 had D. immitis microfilariae and 51 were amicrofilaremic for a total of 445 cases and heartworm prevalence of 0.17%. Most (408) of these dogs had no preventive medication and the prevalence among dogs tested and unprotected was 1.01%. That prevalence was considerably higher in endemic areas. Thirty-seven dogs with heartworm had preventive medication. Heartworm was most frequent in companion dogs over three years of age maintained outdoors in rural areas. About 75% of the cases had never left Canada, 26% had clinical signs and 125 were not treated. Heartworm was reported from British Columbia, Manitoba, Ontario, Quebec, Nova Scotia and Newfoundland, but 383 cases were in Ontario. South-western Ontario was the primary focus of infection. There were 33 cases in Quebec and 24 in Manitoba, mainly found in and around Metropolitan Montreal and Winnipeg respectively. 相似文献
19.
In late November 1987, 1246 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1987, and 50% of them responded. Veterinarians reported that 165,428 dogs were blood tested for heartworm disease and 511 dogs were found with D. immitis microfilariae. Another 78 dogs were amicrofilaremic but diagnosed with heartworm disease to give the total number of cases diagnosed in 1987 as 589 (0.35%). 相似文献
20.
In late December 1986, 1224 institutional veterinarians and small and mixed animal clinics across Canada were sent a questionnaire in order to assess the status of Dirofilaria immitis in Canada in 1986; 46% of them responded. Veterinarians reported that 150,989 dogs were blood-tested for microfilariae and 869 dogs were found with heartworm. Another 65 dogs were amicrofilaremic but diagnosed with heartworm disease and one was found with heartworm at necropsy to give the total number diagnosed in 1986 as 935 (0.62%). Heartworm was reported from Manitoba, New Brunswick, Ontario and Quebec, but most (810) of the cases were from Ontario. South-western Ontario continued to be the primary focus of the infection in Canada. There were 103 cases reported from Quebec, mostly from and around Montreal, and 21 cases from Manitoba, from Winnipeg and surrounding areas. Heartworm was found most frequently in companion dogs over three years of age maintained mainly outdoors in rural areas. About 33% of the cases were observed with clinical signs of heartworm disease and 81% had a history of not having left Canada. 相似文献
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