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1.
试验选取 2 1日龄的杜×长×大三元断奶仔猪 6 6头 ,随机分为 2组 ,每组 3个重复 ,每个重复 9～ 13只 ,研究日粮中添加 1%的谷氨酰胺对断奶仔猪生长性能和血液生化指标的影响。结果表明 ,添加 1%的谷氨酰胺可使断奶仔猪 2 1～ 35日龄阶段平均日增重比对照组提高 19.2 %(P <0 .0 5 ) ,平均日采食量提高 16 .3% (P <0 .0 5 ) ,血清碱性磷酸酶含量提高 74 .3% (P <0 .0 5 ) ,血清尿素氮含量降低 35 .4 % (P <0 .0 5 ) ,腹泻率明显降低。添加 1%的谷氨酰胺还可使断奶仔猪2 1～ 4 9日龄阶段平均日增重提高 11.5 % (P <0 .0 5 ) ,35～ 4 9日龄阶段血清尿素氮含量降低 4 3.7%(P <0 .0 5 )。 相似文献
2.
以比格犬为实验动物经口感染原头蚴,观察细粒棘球绦虫的感染情况.6只比格犬分为3组,每组2只,每组感染原头蚴的剂量分别为5万、15万、25万枚/只,感染后40 d开始检查粪便有无虫卵排出.结果显示:人工感染原头蚴后48 d虫体开始排卵;6只比格犬(Beagle)细粒棘球绦虫人工感染率为100%,其中5万枚组感染的平均荷虫3 457条(成熟2 074条,未成熟1 383条);15万枚组感染的平均荷虫6 230条(成熟3 639条,未成熟2 591条);25万枚组感染的平均荷虫16 238条(成熟11 856条,未成熟4 382条).结果表明,比格犬(Beagle)可以成为感染细粒棘球绦虫研究的动物模型. 相似文献
3.
1984年10月,我们在解剖钩虫动物模型金色仓鼠(Mesocricetus auratus)时,在4只仓鼠的小肠内发现鼠斜睾吸虫[Plagiorchis muris(Tanabe)],其虫数分别为6、4、1、1条。将收集到的虫体用盖玻片加压,以5％福尔马林液固定,卡红染液染色。对10个虫体标本进行了形态观察与测量,结果如下。虫体椭园形(见图1),大小为2.109 相似文献
4.
正一、病原学1.病原形态。成虫形态微小,细线状,乳白色,头端较尾端稍细。旋毛虫为雌雄异体,雄虫大小为(1.4～1.6)mm×0.04 mm,生殖器官为单管形,虫体尾端有两个叶状交配附器。雌虫大小约为(3～4)mm×0.06 mm,尾部直而钝圆,生殖器官亦为单管形,包括卵巢、输卵管、子宫、阴道等。卵巢位于虫体后部,子宫后段充满虫卵,近阴门处已有发育成熟的幼虫,阴门位 相似文献
5.
选择赤峰地区 3～ 4月出生绵羊羔 5 1只 ,新 2岁羊 2 4只 ,连续两年逐月剖检及粪检 ,每月剖检 2～ 3只 ,固定 13只羔羊检卵 ;大群随机抽查粪检羊羔 15 4只 ,新 2岁羊 10 3只。结果表明 :赤峰地区幼龄羊感染的绦虫有扩展莫尼茨绦虫、贝氏莫尼茨绦虫、盖氏曲子宫绦虫、中点无卵黄腺绦虫等 4种 ,其中莫尼茨属和曲子宫属是本地区优势虫种。剖检当年 ,羔羊绦虫感染率为 5 5 .2 6 % ,强度 1～ 6条 ;新 2岁羊绦虫感染率为 6 6 .6 7% ,强度 1～ 4条。粪检当年 ,羔羊绦虫感染率 30 .5 2 % ,新 2岁绦虫感染率 46 .15 %。逐月剖检幼龄羊裸头科绦虫的季节动态为 :当年 3～ 4月出生羔羊 6月下旬检出虫体 ,8～ 9月是当年羔羊感染的高峰期 ,感染率达10 0 % ,翌年的 1～ 3月形成新 2岁羊的感染高峰。粪检当年羔羊 8～ 9月为排卵高峰 ,新 2岁羊在 2～ 3月、8～ 9月形成排卵高峰。据此 ,确定防治适期在 7月下旬至 8月和 11月下旬至 12月 ,实施年内两次驱虫 相似文献
6.
成虫细小，肉眼难以看清。虫体愈向前端愈细，前半部为食道，占虫体长约1／3～2／3。雄虫大小为1．4—1．6毫米×0．04-0．05毫米，雌虫大小约3-4毫米×0．06毫米。胎生。成虫寄生于小肠，幼虫寄生于横纹肌，成虫和幼虫寄生于同一个宿主。 相似文献
7.
作者用完全蠕虫解剖法检查绵羊 5 2只 ,山羊 92只 ,收集虫体 1 2 8万多条 ,虫体经分类鉴定共 92种 ,隶属 7纲、31科、48属 ;优势虫种 1 6个 ;一只羊最多混合感染 38种寄生虫 ,最大荷虫量 1 4 2 76 8条。经防治试验认为 ,用啤酒瓶稀释 ,按每千克体重一次口服丙咪唑 (Albcndazole) 5毫克对羊寄生蠕虫有良好驱治作用 ,用螨净 (Neocidol)按 1∶1 0 0 0浓度药浴 ,对驱治羊体表寄生虫也有很好疗效 相似文献
8.
在用雷佛奴尔法生产免疫球蛋白过程中、白蛋白沉淀分离出球蛋白后的沉积物 ,可用来生产医用软膏。材料与方法 :30只体重为 (0 .1 45± 0 .0 3) kg图 1 大鼠创口感染 3～ 1 6d的治愈率图 2 狗创口感染 3～ 1 6d的治愈率的大鼠 ,平均分成 3组 ,每组 1 0只 ;9只体重为(8.30± 1 .0 ) kg的狗 ,平均分成 3组 ,每组 3只。在皮肤上做切口 ,创口的大小大鼠为 33～ 35mm2 ,狗为 92～ 95mm2 。 30 min后向创口接种金黄色葡萄球菌 ,接种量大鼠 0 .5× 1 0 9,狗 2× 1 0 9。接种 2 d后创口做外伤处置。3组都每天 2次用双氧水处理 ,但第 1组外敷白蛋白 … 相似文献
9.
选用刚出壳的AA肉用仔鸡 5 4 0只 ,公母各半 ,随机分为 5组 ,每组设 3个重复 ,每个重复 36只 ,第 1组 (对照组 )饲喂基础日粮 ,第 2、3、4、5组分别在基础日粮基础上添加 6 0、90、12 0、15 0mg/kg的半胱胺 (CS)。试验结果表明 :0～ 2 1日龄时 ,第 2组平均日增重比对照组提高 5 .0 3% (P <0 .0 5 ) ,2 2～ 4 2日龄时 ,第 3组平均日增重比对照组提高 7.82 % (P <0 .0 5 ) ,0～ 4 2日龄全程 ,第 3组平均日增重比对照组提高 5 .92 % (P <0 .0 5 )。第 5组平均日增重、饲料转化率和成活率在各阶段均明显低于对照组。解剖试验的结果表明 :低剂量的CS对肉鸡内脏器官无不良影响 ,高剂量的CS对肝脏和消化道有损伤 ,而且损伤程度随着CS剂量的增大而增大 相似文献
10.
本文继续介绍我国鳖体斜睾科、粗盘科和端盘科吸虫，共3属9种。六、斜睾科Plagiorchiidae（Lithe，1901）Ward，1917Iv、鳖细孔吸虫AstiotremaamgdaeOgata，1938（图17）虫体呈长叶状，两端钝圆，前睾部最宽，体表前2／3披以细棘，虫体长1．56～4．18mm（以后单位同），宽0．426～0．975。口吸盘端位，大小为0．076～0．196×0．109～0．186。缺前咽，咽紧靠口吸盘之后，大小为0．055～0．087×0．066～0．098。食道长0．094～0．196，管肠末端达后宰后缘水平。腹吸盘紧接肠分叉之后，大小为0．120～0．196×0．118～0．186，盘中心距前… 相似文献
11.
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
12.
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
13.
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
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 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
17.
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
18.
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
20.
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
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