加拿大奶牛业现状及其对中国的启示

应加拿大亚达遗传公司的邀请,作者于2010年6月16—25日赴加拿大对其奶牛业发展现状进行了为期10d的考察。期间参观了加拿大亚达国际遗传公司、加拿大畜牧基因协会(CL-GA)、加拿大奶牛生产性能测定(DHI)中心实验室,加拿大奶业网络协会(Canadian Dairy Network,CDN)、加拿大荷斯坦奶牛协会以及部分大型奶牛养殖场和肉牛育肥场。通过现场参观学习,对加拿大奶牛行业的管理、饲养、遗传改良体系情况有了更进一步的了解,学习到了很多奶牛改良育种及生产管理方面的宝贵经验,现就有关考察学习情况做简单介绍,供业内同仁参考。     

第7届世界荷斯坦牛会议在非洲召开

四年一度的世界荷斯坦牛(黑白花奶牛)会议,1988年2月1日至6日在非洲的肯尼亚首都内罗毕举行,主要内容是有关对奶牛改良的研讨,共有28个国家的230名代表参加,中国奶牛协会周鼎年秘书长出席了会议。     

国际奶牛遗传大会在渥太华召开 中国奶业市场备受关注

11月5日至7日，以“坚持不懈地提高奶牛生产性能”为主题的国际奶牛遗传大会在加拿大首都渥太华召开。大会期间，加拿大农业食品部部长助理Andrew Marsland先生表示，在过去十几年中，中加两国奶业合作项目卓有成效，加拿大政府今后将加强与中国在奶业遗传育种领域的技术合作力度。     

中国奶牛协会南方地区奶牛生产技术经验交流会纪要

中国奶牛协会南方地区生产技术经验交流会于一九八六年十一月二十三日至二十七日在江苏无锡召狂。参加会议的有南方十三省市(区)奶牛协会、主管奶牛生产的领导、牛奶公司和奶牛场以及大专院校、科研单位的代表共有一百二十六名。会议收到科研论文、试验报告、专题交流材料共七十七篇,其中二十九篇材料进行了大会交流。会议由中国奶牛协会副理事长张文楷同志主持,并对南方地区的奶牛生产和协会工作情况作了汇报,中国奶牛协会副秘书长梁中民同志作了当前我国奶牛业生产形势和今后奶协工作任务的报告。     

奶牛营养学最新动向(上)--2002年美国奶业协会(ADSA)、动物学会(ASAS)和加拿大动物学会(CSAS)联合学术年会介绍

2002年7月21～25日在加拿大魁北克由美国奶业科学协会(ADSA)、动物学会(ASAS)和加拿大动物学会(CSAS)联合召开了反刍家畜营养学研究年会,会议云集了奶牛、肉牛界众多研究者,是迄今本行业最盛大的学术会议。上一次是2000年召开的,本次会议有3340人参加,发表论文(摘     

“加拿大——中国陕西奶牛技术研讨会”在西安召开

5月是中国——加拿大两国友好月。5月的西安又盛开出一朵美丽的中加友谊之花。19日在陕西省畜牧兽医总站召开的“加拿大——中国陕西奶牛技术研讨会”上迎来了由加拿大政府农业部高级国际供销官员安德鲁·J·拉斐尔先生率领的加拿大奶牛技术访华团一行6人。陕西省及西安市有关方面的专家、教授、场长和工作者100余人出席了研讨会。     

中加合作谱新篇——中国饲料工业协会与加拿大饲料行业协会签署《中国-加拿大饲料行业协会合作谅解备忘录》

[本刊讯 ]为促进中国和加拿大饲料行业协会间的技术、信息交流 ,建立合作及友好互惠关系 ,中国饲料工业协会秘书长刘同占、副秘书长乔玉锋于 2 0 0 1年 2月 1 3日与加拿大总理克雷蒂安亲率的商务代表团成员加拿大国际谷物学院主席道格拉斯·斯托先生、加拿大豆类作物协会主席莱斯·兰金先生、加拿大双低油菜籽理事会主席戴尔·阿道夫先生签署了《中国-加拿大饲料行业协会合作谅解备忘录》。双方就如下条款达成共识 :分享饲料及饲料原料的利用、饲料配方及加工、动物营养及科学管理方面的研究成果和技术知识 ;建立中加两国饲料行业间的定期互…     

“全国奶牛线性鉴定技术培训班”在宁举行

<正> 应中国奶牛协会邀请,美国荷斯坦牛协会主管育种、体型线性外貌鉴定专家理查德·豪先生,由中国奶牛协会秘书长周鼎年同志陪同,于1988年11月4日至11月13日在南京农业大学实验牧场,为来自全国15个省,市30余名奶牛育种线性鉴定技术人员进行了理论和现场鉴定教学。这次培训班的特点是以专家现场示     

2012畜牧兽医科技前沿技术精彩回顾

<正>奶牛邹阿玲(新疆克拉玛绿成农业开发有限责任公司);李胜利,张万金(中国农业大学);叶尔太·沙比尔哈孜然(新疆自治区奶业办公室):应用DHI技术对奶牛生产性能的影响DHI体系(奶牛群体改良,dairy herd improvement)在国外已经发展了60多年,美国、加拿大等奶业发达国家的实践证明,实施DHI体系是发展高效奶牛业的关     

云南省蜂产业技术交流中心成立

<正>【胡书红报道】2015年9月2日,云南省农技协蜂产业技术交流中心(简称云南省蜂产业技术交流中心)召开成立大会。大会在楚雄州姚安县菖河生态蜜蜂园科技有限公司举行,来自全省蜂业企业、蜂业协会、合作社以及科研院校的84名代表参加了会议。会议由姚安县中蜂养殖协会周绍伦主持。云南农业大学东方蜜蜂研究所所长和绍禹教授和云南省农业厅家畜改良站书记、     

Heartworm in dogs in Canada in 1984

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.

     

Heartworm in dogs in Canada in 1983

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.

     

Heartworm in dogs in Canada in 1991

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.     

Heartworm in dogs in Canada in 1985

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.

     

Heartworm in dogs in Canada in 1988

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%).     

Heartworm in dogs in Canada in 1989

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.

     

Heartworm in dogs in Canada in 1987

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%).     

Heartworm in dogs in Canada in 1986

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.