Canadian journal of comparative medicine : Revue canadienne de medecine comparee最新文献

Chlorpyrifos for control of the short-nosed cattle louse, Haematopinus eurysternus (Nitzsch) (Anoplura, Haematopinidae) during winter. 毒死蜱在冬季防治短鼻牛虱，eurysterhaematinus (Nitzsch) (anoplae, haematinides科)。

Canadian journal of comparative medicine : Revue canadienne de medecine comparee Pub Date : 1985-10-01

M A Khan, G B Schaalje

{"title":"Chlorpyrifos for control of the short-nosed cattle louse, Haematopinus eurysternus (Nitzsch) (Anoplura, Haematopinidae) during winter.","authors":"M A Khan, G B Schaalje","doi":"","DOIUrl":"","url":null,"abstract":"Two groups (A and C) of range cows were treated in February with chlorpyrifos (16 mL Dursban 44/cow) for the control of heavy infestations of the short-nosed cattle louse. Group A was treated in 1977 and group C in 1979 and each treated group was compared with a separate untreated group. Some of the treated cows were identified as carriers of louse infestation (subgroups A1 and C1), while others were noncarriers (subgroups A2 and C2). The maximum level of reduction in louse populations was 99% at week 4 posttreatment in subgroup A1, 99% from weeks 2-16 posttreatment in subgroup A2, 92% at week 3 posttreatment in subgroup C1 and 100% at weeks 15-17 in subgroup C2. Clinically, the treated cows, which were anemic at the time of treatment, recovered from anemia during the posttreatment period of 25 weeks for group A and 17 weeks for group C. Remission of anemia also occurred in the two untreated groups, possibly because of natural summer decline in louse population. The treatment had no effect on the whole blood cholinesterase of the cows and the treated cows showed no signs of organophosphorous toxicity.","PeriodicalId":9546,"journal":{"name":"Canadian journal of comparative medicine : Revue canadienne de medecine comparee","volume":"49 4","pages":"361-5"},"PeriodicalIF":0.0,"publicationDate":"1985-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1236193/pdf/compmed00004-0013.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"13563751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultrastructural characterization of colonic lesions in pigs inoculated with Treponema hyodysenteriae. 猪接种水痢密螺旋体后结肠病变的超微结构特征。

Canadian journal of comparative medicine : Revue canadienne de medecine comparee Pub Date : 1985-10-01

M A Albassam, H J Olander, H L Thacker, J J Turek

引用次数: 0

A comparison of standard serological tests for the diagnosis of bovine brucellosis in Canada. 加拿大诊断牛布鲁氏菌病的标准血清学试验的比较。

Canadian journal of comparative medicine : Revue canadienne de medecine comparee Pub Date : 1985-10-01

B W Stemshorn, L B Forbes, M D Eaglesome, K H Nielsen, F J Robertson, B S Samagh

{"title":"A comparison of standard serological tests for the diagnosis of bovine brucellosis in Canada.","authors":"B W Stemshorn, L B Forbes, M D Eaglesome, K H Nielsen, F J Robertson, B S Samagh","doi":"","DOIUrl":"","url":null,"abstract":"Six agglutination and two complement fixation tests were compared with respect to specificity, sensitivity and relative sensitivity for the serodiagnosis of bovine brucellosis. Based on 1051 sera from brucellosis free herds, the specificity of the tests was 98.9% for the buffered plate antigen test (BPAT), 99.2% and 99.3% for the standard tube and plate agglutination tests (STAT and SPAT), respectively, and 99.8% for the 2-mercaptoethanol test (2MET). On this small sample, the rose bengal plate test (RBPT), card test (CARD) and the complement fixation test (CFT) correctly classed all sera as negative. On a sample of 167 culture positive cattle, the sensitivities of the tests were CFT: 79.0%, BPAT: 75.4, RBPT: 74.9%, CARD: 74.3%, SPAT: 73.1%, STAT: 68.9%, and 2MET: 59.9%. All tests combined detected only 82% of these infected cattle. Analysis of the relative sensitivity of the six agglutination tests gave the following ranking: BPAT greater than RBPT greater than CARD greater than SPAT greater than STAT. The 2MET ranked between the BPAT and RBPT or between the RBPT and CARD depending on the analysis used. The use of the BPAT as a screening test is recommended provided that a test of high specificity and sensitivity such as the CFT is used to confirm screening test reactions.","PeriodicalId":9546,"journal":{"name":"Canadian journal of comparative medicine : Revue canadienne de medecine comparee","volume":"49 4","pages":"391-4"},"PeriodicalIF":0.0,"publicationDate":"1985-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1236197/pdf/compmed00004-0043.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"15186182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of feeding Ascochyta-infected and normal lentils to rats (short-term study). 给大鼠喂食感染阿斯科克虫和正常小扁豆的影响(短期研究)。

Canadian journal of comparative medicine : Revue canadienne de medecine comparee Pub Date : 1985-10-01

J N Tarwid, R A Morrall, J H Mills

引用次数: 0

Evaluation of the arterial blood pressure of dogs by two noninvasive methods. 两种无创方法评价犬动脉血压。

Canadian journal of comparative medicine : Revue canadienne de medecine comparee Pub Date : 1985-10-01

A Chalifoux, A Dallaire, D Blais, N Larivière, N Pelletier

{"title":"Evaluation of the arterial blood pressure of dogs by two noninvasive methods.","authors":"A Chalifoux, A Dallaire, D Blais, N Larivière, N Pelletier","doi":"","DOIUrl":"","url":null,"abstract":"The determination of the arterial blood pressure was done on 12 healthy mixed breed dogs in both the anesthetized and the conscious state, to evaluate two instruments (Doppler flow detector and infrasonde D4000), in their ability to indirectly determine arterial blood pressure. The coefficients of variation were higher with indirect methods when compared with the results obtained by cannulation. These coefficients were lower with the Doppler flow detector. The correlation study showed that both apparatuses were reliable in most situations. The infrasonde D4000 was more accurate than the Doppler in the conscious animals. However the results showed a lack of precision in hypertensive conscious dogs. The diastolic arterial blood pressure was particularly precise in the case of the anesthetized hypotensive dogs. Its sensitivity allowed it to register muscle movement artifacts. The Doppler flow detector showed less variation and was particularly accurate in both anesthetized and conscious hypertensive dogs. Its sensitivity allowed artifact movement sounds to be detected. The Doppler should be used in quiet surroundings or earphones should be worn by the evaluator. Some form of restraint is needed with the use of both instruments. Even if the correlations with the direct arterial blood pressure values were better with the infrasonde D4000, greater variations were found in the individual readings. The Doppler instrument represents in the hands of the investigators a better instrument for routine monitoring of blood pressure in the dog.","PeriodicalId":9546,"journal":{"name":"Canadian journal of comparative medicine : Revue canadienne de medecine comparee","volume":"49 4","pages":"419-23"},"PeriodicalIF":0.0,"publicationDate":"1985-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1236204/pdf/compmed00004-0071.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"15186185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Strongylus equinus: development and pathological effects in the equine host. 马圆形线虫:在马宿主体内的发育和病理作用。

Canadian journal of comparative medicine : Revue canadienne de medecine comparee Pub Date : 1985-10-01

B M McCraw, J O Slocombe

{"title":"Strongylus equinus: development and pathological effects in the equine host.","authors":"B M McCraw, J O Slocombe","doi":"","DOIUrl":"","url":null,"abstract":"The development and pathological effects of Strongylus equinus were studied in 17 pony foals and one horse foal raised in isolation and examined at necropsy from seven days to 40 wk postinfection (PI). Following inoculation of 15000 +/- 6% or 16000 +/- 6% infective larvae by stomach tube foals were monitored for clinical signs and selected blood changes. Larvae penetrated the wall of the ileum, cecum and colon. The molt to the fourth stage occurred mostly in the wall of the ventral colon before 2 wk PI and larvae attained the liver mainly via the peritoneal cavity as early as eight days PI and persisted in the liver until 17 wk PI. Following active migration within the liver, invasion of the pancreas was accomplished at least by 7 wk PI with maximum numbers at 17 wk. The fourth molt occurred about 15 wk PI and preadults were present in the wall of the ventral colon at 30 wk PI and in the lumen of the colon at 40 wk. Strongylus equinus tends to wander retroperitoneally to the flanks, perirenal fat, diaphragm, omentum and occasionally to the lungs. Between 1 and 4 wk PI small raised hemorrhagic areas were present on the serosa of the ileum and colon. Small white foci on the surface of the liver at 1 wk PI were followed by tortuous tracks 3 wk later. Pathological changes in the pancreas were evident at three months PI and more severe by four months. Granulomas containing larvae were common in the flanks, diaphragm, omentum and occasionally beneath the pleura of the lungs. Clinical signs were correlated with invasion of the pancreas, the fourth molt, maximum globulin values and high eosinophil counts.","PeriodicalId":9546,"journal":{"name":"Canadian journal of comparative medicine : Revue canadienne de medecine comparee","volume":"49 4","pages":"372-83"},"PeriodicalIF":0.0,"publicationDate":"1985-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1236195/pdf/compmed00004-0024.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"15186180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Epizootiological survey of parainfluenza-3, reovirus-3, respiratory syncytial and infectious bovine rhinotracheitis viral antibodies in sheep and goat flocks in Quebec. 魁北克绵羊和山羊群副流感病毒-3、呼肠孤病毒-3、呼吸道合胞体和传染性牛鼻气管炎病毒抗体的流行病学调查。

Canadian journal of comparative medicine : Revue canadienne de medecine comparee Pub Date : 1985-10-01

L Lamontagne, J P Descôteaux, R Roy

{"title":"Epizootiological survey of parainfluenza-3, reovirus-3, respiratory syncytial and infectious bovine rhinotracheitis viral antibodies in sheep and goat flocks in Quebec.","authors":"L Lamontagne, J P Descôteaux, R Roy","doi":"","DOIUrl":"","url":null,"abstract":"A serological survey was conducted in an attempt to detect antibodies against bovine respiratory viruses in sheep and goats from seven geographical areas of Quebec. Sera from 10% of the animals in 182 sheep flocks and 40 goat flocks were collected and specific antibodies against parainfluenza-3, reovirus type 3, respiratory syncytial and infectious bovine rhinotracheitis viruses were detected by hemagglutination-inhibition tests for the former viruses and complement fixation and seroneutralization assays for the latter viruses. Results showed prevalence rates of serological reaction to parainfluenza-3, reovirus type 3 and respiratory syncytial viruses of 28, 72 and 35% in sheep and 26, 64 and 36% in goats, respectively. No antibodies in infectious bovine rhinotracheitis virus were detected in sheep or goats tested. Prevalence rates varied according to the geographical area. No relationships were detected between age, sex, breed, size of flock and prevalence rates of different antibodies except that parainfluenza-3 antibodies were more common in large goat flocks and in sheep flocks with total confinement housing. A relationship between presence of clinical signs in the flocks and prevalence rates of antibodies was only demonstrated for parainfluenza-3 infection in goat flocks.","PeriodicalId":9546,"journal":{"name":"Canadian journal of comparative medicine : Revue canadienne de medecine comparee","volume":"49 4","pages":"424-8"},"PeriodicalIF":0.0,"publicationDate":"1985-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1236205/pdf/compmed00004-0076.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14133735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficiency of rapapport-vassiliadis medium-a reply. rapapap -vassiliadis介质的效率分析。

Canadian journal of comparative medicine : Revue canadienne de medecine comparee Pub Date : 1985-10-01

R B Truscott

引用次数: 0

Pulmonary response to intratracheal challenge with Pasteurella haemolytica and Pasteurella multocida. 肺部对溶血性巴氏杆菌和多杀性巴氏杆菌气管内攻击的反应。

Canadian journal of comparative medicine : Revue canadienne de medecine comparee Pub Date : 1985-10-01

T R Ames, R J Markham, J Opuda-Asibo, J R Leininger, S K Maheswaran

{"title":"Pulmonary response to intratracheal challenge with Pasteurella haemolytica and Pasteurella multocida.","authors":"T R Ames, R J Markham, J Opuda-Asibo, J R Leininger, S K Maheswaran","doi":"","DOIUrl":"","url":null,"abstract":"Calves were inoculated intratracheally with 5 X 10(7), 5 X 10(8), or 5 X 10(9) colony forming units of either 18-hour stationary phase cultures or 4-hour log phase cultures of Pasteurella haemolytica. The log phase culture at all concentrations produced more severe clinical signs, hematological changes and pulmonary lesions at postmortem examination than did the corresponding stationary phase culture. More severe effects were seen with the larger doses especially with the log phase culture. Fibrinous bronchopneumonia with focal or multifocal necrosis was consistently produced by both the stationary and log phase cultures. To determine if this lesion was peculiar to P. haemolytica or whether it could be produced generally by rapidly growing Gram negative organisms, a 4-hour log phase culture of Pasteurella multocida was prepared in an identical manner to that used for the culture of P. haemolytica and given to calves intratracheally at the high bacterial dose (5 X 10(9]. The P. haemolytica produced more severe clinical, hematological and morphological changes than did the P. multocida. The lesions observed with P. multocida differed morphologically from those of P. haemolytica; there was a suppurative exudative component and minimal to no necrosis with P. multocida. It appears that an important pathogenic principle is produced by the rapidly growing P. haemolytica that causes it to produce a more severe clinical disease and more necrotizing pulmonary lesions than P. multocida.","PeriodicalId":9546,"journal":{"name":"Canadian journal of comparative medicine : Revue canadienne de medecine comparee","volume":"49 4","pages":"395-400"},"PeriodicalIF":0.0,"publicationDate":"1985-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1236198/pdf/compmed00004-0047.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"15021955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A simple aerosol chamber for experimental reproduction of respiratory disease in pigs and other species. 一个简单的气雾室，用于猪和其他物种呼吸系统疾病的实验繁殖。

Canadian journal of comparative medicine : Revue canadienne de medecine comparee Pub Date : 1985-10-01

A D Osborne, J R Saunders, T K Sebunya, P Willson, G H Green

引用次数: 0