六十户乡生态渔场渔业资源及鱼病调查

六十户乡生态渔场隶属乌鲁木齐县管辖,是乌鲁木齐地区最大的个体池塘养殖渔场.2001年,我们对该场的渔业资源和鱼病防治情况进行了调查,并对该渔场发生的鱼病病原进行了诊断和治疗,现报告如下.     

鸿雁池渔场业资源及鱼病调查

雁池渔场位于乌鲁木齐市郊,是全疆最大的大型温水鱼养殖基地.为了了解鸿雁池水库的渔业资源和鱼病发生情况,于2001年9月对该场进行了调查,现将结果报告如下.     

彭泽鲫稻田养殖高产技术

近年来,我国稻田养鱼有了很大的发展,但在稻田中利用彭泽鲫杂食性、快速生长的特点进行养殖的,还不多见。现将稻田养殖彭泽鲫高产技术介绍如下: 一、稻田的选择和整理: 1.选择水源充足、水质良好,土质好、保水力强,排灌方便的田块,单、双季稻田均可。 2.加高加固田埂,埂高0.5～0.7米,宽0.5米,并夯实。在田中成对角各设置一个进水口和排水口,在进     

彭泽鲫夏花网箱当年养成技术

彭泽鲫为淡水良种鲫鱼之一,被国家农业部列为全国性推广养殖良种。该品种属广温性鱼类,营底栖生活,耐低氧,对水质酸碱度变化耐受力强。其食性杂,人工养殖条件下,喜食人工配合饲料,兼食天然饵料。其生长快,适合集约化、商品化养殖。现将彭泽鲫夏花鱼种当年网箱养成商品鱼技术介绍如下:     

澳大利亚金枪鱼的新日粮

澳大利亚南部的金枪鱼养殖者面临寻找冷冻生鱼作为鱼饲料替代品的压力。澳大利亚的Skretting渔场研发成功一种日粮,成为世界上用颗粒饲料养殖金枪鱼的首例。 Skretting渔场是世界闻名的Nutreco水产养殖集团的一个组成部分,已经和Speucer海湾渔场(Stehr集团)实现了合资经营。这种合伙关系有     

安徽省东至县黄泥湖池塘草鱼主养技术模式

安徽省东至县黄泥湖渔场利用示范基地对以草鱼为主的池塘80:20养殖技术进行了研究,并在池州、安庆地区得到应用,取得了较好的经济效益、社会效益.主要对该技术进行了介绍,以期为草鱼养殖提供参考.     

蝇蛆复合发酵蛋白替代鱼粉对彭泽鲫的生长性能和肝脏功能的影响

为探讨不同比例蝇蛆复合发酵蛋白(FMP)替代鱼粉对彭泽鲫生长性能和肝脏功能的影响,试验选择均重(9.00±0.50)g的彭泽鲫,随机分为4个组,每组3个重复,每个重复放养50尾鱼.对照组日粮含16％的鱼粉,替代组日粮用6％、10％和16％FMP等量替代对照组日粮中的鱼粉,即替代鱼粉比例分别为37.5％、62.5％和100％.在循环水养殖系统中进行为期56 d的生长试验.结果表明,随着FMP替代比例的增加,彭泽鲫的增重率呈下降趋势,饲料系数逐渐升高;肠道蛋白酶活性和淀粉酶活性逐渐降低,脂肪酶活性逐渐升高;肝脏功能受到不同程度影响.     

罗氏沼虾池塘养殖试验报告

利用贵州省铜仁地区某水产试验渔场的一口0.3 hm2的池塘开展罗氏沼虾养殖试验.经过143 d的养殖,平均产量为1 066.65 kg/hm2,利润为32 340元/hm2.     

乌拉泊养鳟场渔业资源及鱼病调查

2001年9月,对乌拉泊养鳟场渔业资源及鱼病进行了调查.现将调查结果报告如下. 1调查方法 1.1对渔场的基本情况进行调查. 1.2对渔场鱼病防治情况进行调查. 1.3对渔场水样进行检测. 1.4采集鱼样进行剖检,检查鱼体有无内、外寄生虫;对内脏器官进行病理剖检和细菌培养.     

乌鲁木齐地区鱼病防治对策

乌鲁木齐地区是淡水鱼养殖生产基地之一,其养殖区域主要分布在六十户乡生态渔村、青格达湖、柴窝堡渔场、红雁地渔场等。全市流水养殖面积约3.3hm~2,池塘养殖约300hm~2,水库养殖20hm~2,湖的养殖0.28万hm~2,年产鱼量在2800t左右,淡水鱼主要品种有鲤鱼、鲫鱼、草鱼、罗非鱼、花白鲢,目前新引进的品种有:白鲳、乌鳢、武昌鱼等。     

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 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 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.

     

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.