共查询到20条相似文献，搜索用时 46 毫秒
1.
生猪养殖逐渐向着规模化、集约化方向发展,但我国生猪养殖仍以中小型养殖场、散养居多,中小型养殖场及散养户的养殖技术还有待提高。根据生猪不同阶段的生长特点制定合理的饲养管理措施对于提高生猪生产性能和抗病力有重要作用。为此,本文从种猪与仔猪的选择、仔猪的饲养管理、育肥猪的饲养管理、种猪的饲养管理及疾病的防控等方面阐述了生猪的养殖技术,旨在为养殖场、户生猪生产提供参考。 相似文献
2.
肉牛养殖周期长,一般杂交三代以上西门塔尔牛需要饲养18个月才能屠宰,加上母牛妊娠10个月,出栏一头肉牛,需要28个月。较长的饲养过程,对技术要求高,疾病风险也很大,同时还要做好妊娠环节、生产环节、育肥环节等等,只有把控好各个养殖环节,才能使养殖效益最大化。其中,最重要的是产后新生犊牛的饲养管理环节,新生犊牛抵抗力弱,饲养管理技术要求精细。而在云南保山一带,肉牛养殖以散养户居多,散养户肉牛养殖技术低,科学养殖意识淡薄。对此,本文介绍了一些关于新生犊牛科学的饲养管理手段以及一些新生犊牛常见疾病的治疗方法,供参考。 相似文献
3.
2020年4月,湖南省吉首市一羊养殖户主确诊为布鲁氏菌血清学阳性。为查找感染来源,采用现场问询、实地察看、实验室检测等方式,对该养羊户及流行病学关联养殖场户进行了畜间布鲁氏菌病流行病学调查。调查发现:患病养殖户与其中一个流行病学关联养殖场户有从外省市引种情况,而其他3个关联场户均从这2个场户调入过羊群;对5个羊养殖场户全部的226只羊进行布鲁氏菌血清学检测,结果 4个场户检出阳性,个体阳性率为11.5%(26/226)。经羊群调入路径推测,羊养殖场户从外省市引种传入病原的可能性较大,其他养殖场户通过公共区域放牧和调入羊群导致疫情扩散。疫情提示,养殖场户应做好规范引种、隔离饲养及个人防护工作,相关部门应加强监测,做好产地检疫和流通环节监管。 相似文献
4.
疫病监测是动物免疫工作的重要内容,准确监测是防控口蹄疫的重要环节。采集某地区9个奶牛养殖场及散养户的牛血清,采用正向间接血凝试验进行O型口蹄疫免疫抗体水平的检测。结果显示,该地区牛口蹄疫疫苗免疫合格率平均为71.5%,规模化养殖场高达76.7%,而个体散养户只有51.7%,比个体散养户高25%。由此表明,规模化养殖场免疫效果较好。 相似文献
5.
<正>近几年在庆阳市委市政府的大力支持下,依靠本地良好的农业资源及优越的地理环境,庆阳市畜牧业发展突飞猛进,其中肉牛养殖成为我市畜牧业和农民增收的有效途径之一。肉牛饲养量已经达到67.5万头,大部分规模养殖场以饲养育肥牛为主,散养户和少数养殖场以饲养繁育母牛为主,但其养殖繁育牛的积极性和所获得的经济效益受犊牛死亡率的影响较大,而引起犊牛死亡率的主要病因是腹泻。通过调查发现,在肉牛繁育场高达20%~30% 相似文献
6.
近年来牛结节性皮肤病(LSD)已扩散至俄罗斯和哈萨克斯坦,有可能在数月或数年内传入中国,从而对中国牛群带来严重威胁。本文阐述了LSD在全球扩散情况、预警信息、流行特征、诊断方法,以及相应的风险管理措施。分析了保加利亚LSD防控经验,包括:政府和科学界高度重视,基于传播风险调整防控措施,抓好感染牛群的快速扑杀和无害化处理,大规模开展疫苗免疫,限制活牛运输等。 相似文献
7.
为了掌握目前猪伪狂犬病发生、发展情况,通过对不同生长阶段、免疫与非免疫养殖场、规模场与散养户猪伪狂犬病的发病特点三个方面进行调研,其中乳猪、断奶仔猪、育肥猪、母猪,发病率分别为12%、25%、6%、26.7%,死亡率分别为100%、20%、2%、16.7%;未免疫场与免疫发病率分别为8.3%、4.25%;2.08%;规模场、散养户发病率分别为2.08%、11.4%。 相似文献
8.
犊牛育肥的关键在于挑选合适的犊牛,要挑选身体健壮的犊牛作为育肥牛,避免由于犊牛体弱多病而影响育肥效果和养殖收入。养殖场在挑选适宜育肥犊牛时,重点从犊牛品种、饲喂管理、疾病防控管理等多个环节入手,建立严格的养殖场内部饲养管理机制,全面保障犊牛的健康生长。这项工作技术强、养殖周期较长,需要进行持续性、科学化的饲养管理,应安排专业饲养人员执行管理任务。要求养殖人员不断总结工作经验,反思现阶段存在的问题,从中找到提升管理工作效果和解决育肥牛养殖难题的方法。 相似文献
9.
1郓城县肉牛生产历史及现状郓城县养牛历史悠久,培育出了优良地方品种-鲁西黄牛,2000年之前养牛的用途主要是役用,以一家一户散养为主,全县牛存栏大约10万头。2000年以后,农业机械化逐渐普及,牛的役用功能被逐步替代,散养户减少,牛存栏量逐渐降低,但出现了部分小规模养殖肉牛场户,并且养殖规模越来越大,养殖场数量越来越多。截止到2020年上半年,全县存栏肉牛4.8万头,全县最大规模存栏1400头,200头以上规模场38个,100头以上规模场近百家,规模场基本上为异地购买育肥,规模场能繁母牛数量偏少,200头以上规模场存栏18876头,其中繁母牛仅390头。当前郓城县活牛价格为35.6元/kg,按购进体重175 kg/头犊牛11000元,饲养10个月,饲料防疫工时等费用5300元,出栏体重600 kg计,每头出栏牛利润为5060元。 相似文献
10.
为了掌握宁夏地区育肥牛不同饲养规模的成本和收益情况,通过开展育肥牛饲养状况、饲养规模、饲养成本、活牛交易及饲草料资源利用情况进行走访调查,对育肥牛不同饲养规模的生产成本和养殖效益进行比较。结果表明:架子牛的购买和饲料成本的投入对育肥牛饲养收益影响较大,分别占总成本的67%~71%和25%~28%;由于养殖户、养殖专业户和小规模养殖场的饲养管理水平较低,育肥牛日增重偏低,达到出栏体重的育肥时间较长,养殖效益比中等和大规模养殖场低;饲料投入和育肥时间直接决定育肥牛养殖的盈亏,按照育肥牛出栏体重为500 kg计算,当育肥牛的育肥期超过260 d或平均日增重小于0.58 kg时,经济效益为负值;发展适度规模(存栏500头以上)养殖效益较好,有利于推进肉牛生产向高质量、高效益方向转变,促进肉牛产业持续健康发展。 相似文献
11.
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
13.
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
14.
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
15.
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
17.
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
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
|
