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National Institute of Animal Health quarterly最新文献

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Survey on antibody against hemorrhagic enteritis virus among chicken flocks in Japan. 日本鸡群出血性肠炎病毒抗体调查。
National Institute of Animal Health quarterly Pub Date : 1982-01-01
S Yamaguchi, T Imada, H Kawamura
{"title":"Survey on antibody against hemorrhagic enteritis virus among chicken flocks in Japan.","authors":"S Yamaguchi,&nbsp;T Imada,&nbsp;H Kawamura","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A survey on antibody against hemorrhagic enteritis virus was conducted by the agar-gel precipitation test among chicken flocks in Japan. The positive rate of individual serum samples increased with the advance in age of chickens. Ninety-one of 181 sera (50%) and 23 of 33 flocks (79%) were positive among chickens more than 181 days old.</p>","PeriodicalId":76197,"journal":{"name":"National Institute of Animal Health quarterly","volume":"22 4","pages":"180-1"},"PeriodicalIF":0.0,"publicationDate":"1982-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17373752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of rearing temperature on length of larval period and size of adults in Culicoides arakawae and Culicoides maculatus (Dipteria:Ceratopogonidae). 饲养温度对arakawae库蠓和maculic蠓幼虫期和幼虫大小的影响
National Institute of Animal Health quarterly Pub Date : 1982-01-01
S Kitaoka
{"title":"Effects of rearing temperature on length of larval period and size of adults in Culicoides arakawae and Culicoides maculatus (Dipteria:Ceratopogonidae).","authors":"S Kitaoka","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Effects of rearing temperature on the duration of larval period and the wing lengths of adults were studied in a laboratory strain of Culicoides arakawae and in wild-caught C. maculatus fed cultured nematodes of Rhabditis elongata as diets on agar medium. Larvae of each species responded differently to rearing temperature. So that the larval development of C. arakawae adapted to high temperature and of C. maculatus to low temperature. Low temperature increased the duration of larval period considerably in C. arakawae and slightly in C. maculatus. The developmental zero, for both species was found in almost the same range from 15 to 16 degrees C. No pupae were produced in C. arakawae at 35 degrees C and in C. maculatus above 30 degrees C. High temperature, as well as low temperature, induced low efficiency in pupation. The highest percent pupation was seen in both species at 22.5 degrees C. There was a close inverse relationship between the wing length and larval rearing temperature for both sexes of each species.</p>","PeriodicalId":76197,"journal":{"name":"National Institute of Animal Health quarterly","volume":"22 4","pages":"159-62"},"PeriodicalIF":0.0,"publicationDate":"1982-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18203111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Experimental infections of mice and guinea pigs with Haemophilus parasuis. 小鼠和豚鼠副猪嗜血杆菌的实验感染。
National Institute of Animal Health quarterly Pub Date : 1982-01-01
T Morozumi, T Hiramune, K Kobayashi
{"title":"Experimental infections of mice and guinea pigs with Haemophilus parasuis.","authors":"T Morozumi,&nbsp;T Hiramune,&nbsp;K Kobayashi","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The pathogenicity of Haemophilus parasuis for mice and guinea pigs was examined. Mice were inoculated intraperitoneally with 2 X 10(7) to 2 X 10(9) organisms suspended in saline or in broth containing fresh yeast extract. Most of them survived after inoculation. Death occurred only in mice inoculated with 2 X 10(9) organisms suspended in broth. The recovery rate of H. parasuis from all the dead mice varied from 28.9% of the brains to 71.4% of the lungs. There were no lesions observed in any mouse, except one. Guinea pigs were inoculated intraperitoneally with 1 X 10(8) to 1.6 X 10(10) organisms suspended in saline. Many of them died after showing septicemia and serofibrinous serositis, which were associated with purulent leptomeningitis or meningoencephalitis in some of them. H. parasuis was recovered abundantly from many organs, including the brain, in the guinea pigs. It was also recovered from guinea pigs inoculated with 1.8 X 10(9) organisms by various routes. Serositis was observed in guinea pigs inoculated intramuscularly or intrapulmonarily. These results suggested that guinea pigs might be available for investigation of the pathogenicity of H. parasuis.</p>","PeriodicalId":76197,"journal":{"name":"National Institute of Animal Health quarterly","volume":"22 1","pages":"23-31"},"PeriodicalIF":0.0,"publicationDate":"1982-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18124179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The anthelmintic efficacy of Artemisia herba-alba against Haemonchus contortus infection in goats. 白蒿对山羊弯曲血螨感染的驱虫效果。
National Institute of Animal Health quarterly Pub Date : 1982-01-01
U E Idris, S E Adam, G Tartour
{"title":"The anthelmintic efficacy of Artemisia herba-alba against Haemonchus contortus infection in goats.","authors":"U E Idris,&nbsp;S E Adam,&nbsp;G Tartour","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The anthelmintic activity of the powdered shoots of Artemisia herba-alba was investigated in experimental haemonchosis in six Nubian goats which had been infected with single doses of 800 to 1,000 infective Haemonchus larvae. The clinical signs of caprine haemonchosis included inappetence, dullness and soft faeces and were correlated with the pathological findings. None of these changes were observed in four of the six goats following the treatment with 2, 10 or 30 g of Artemisia shoots. This successful therapy was supported by the absence of eggs in the faeces, of adult worms in the abomasum at necropsy and of significant lesions in the tissues of the goats and return of the concentrations of serum ammonia, sodium, potassium, total protein and creatinine and of the activity of aspartate aminotransferase (GOT) to normal. In two goats, treated with either 10 or 30 g of Artemisia shoots, egg production was not completely suppressed and a few adult Haemonchus worms were found in the abomasum.</p>","PeriodicalId":76197,"journal":{"name":"National Institute of Animal Health quarterly","volume":"22 3","pages":"138-43"},"PeriodicalIF":0.0,"publicationDate":"1982-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18178162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pathological changes in goats experimentally inoculated with Pseudomonas pseudomallei. 山羊实验接种假单胞菌的病理变化。
National Institute of Animal Health quarterly Pub Date : 1982-01-01
M Narita, P Loganathan, A Hussein, A Jamaluddin, P G Joseph
{"title":"Pathological changes in goats experimentally inoculated with Pseudomonas pseudomallei.","authors":"M Narita,&nbsp;P Loganathan,&nbsp;A Hussein,&nbsp;A Jamaluddin,&nbsp;P G Joseph","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Sixteen goats were inoculated subcutaneously or intraperitoneally with cultured Pseudomonas pseudomallei isolated from a goat. They showed either acute or chronic phase of disease. When inoculated intraperitoneally, animals suffered from a septicemic illness of short duration accompanied with micro-abscesses scattered widely throughout the body. In animals subcutaneously inoculated no clinical signs were exhibited, but the disease was of rather long duration, and lesions were large and localized in the spleen and lungs. Coincident with lesions, a large number of Pseudomonas pseudomallei organisms were isolated from abscesses in the spleen and lungs. Ultrastructurally, numerous bacilli could be detected in the cytoplasm of macrophages in the abscesses. They had an electron-dense cell wall. Most of them were surrounded by electron-dense substance.</p>","PeriodicalId":76197,"journal":{"name":"National Institute of Animal Health quarterly","volume":"22 4","pages":"170-9"},"PeriodicalIF":0.0,"publicationDate":"1982-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18203112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pathological studies on encephalitis in mice experimentally inoculated with bovine coronavirus. 牛冠状病毒实验性接种小鼠脑炎的病理研究。
National Institute of Animal Health quarterly Pub Date : 1982-01-01
M Kubo, H Akashi, Y Inaba, M Osada, S Konno
{"title":"Pathological studies on encephalitis in mice experimentally inoculated with bovine coronavirus.","authors":"M Kubo,&nbsp;H Akashi,&nbsp;Y Inaba,&nbsp;M Osada,&nbsp;S Konno","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>One- to 21-day-old mice were examined pathologically after inoculated intracerebrally or subcutaneously with the Kakegawa strain of bovine coronavirus. In 1- to 4-day-old mice inoculated intracerebrally, the brain contained a small number of neutrophils and lymphocytes having infiltrated diffusely and perivascularly and some degenerative neurons. In mice inoculated intracerebrally at 7 to 21 days of age, severe necrosis of pyramidal cells was shown in Ammon's horn. Perivascular infiltrations of neutrophils and lymphocytes were moderate to severe. Some neurons were degenerative in the cerebral cortex, thalamus and midbrain. Degeneration of some neurons and mild infiltration of neutrophils and lymphocytes were observed in the brain of mice inoculated subcutaneously at 1 to 7 days of age. Perivascular infiltration of neutrophils and lymphocytes was prominent in the cerebral cortex of mice inoculated subcutaneously at 14 days of age. Cellular infiltration was also seen in the thalamus, Ammon's horn, midbrain, cerebellum and medulla oblongata. All the mice, except one, inoculated subcutaneously at 21 days of age were free from neural changes. Electron-microscopically, virus particles were observed in and outside of the degenerative neurons. They had a core 70 nm in diameter and an envelope with spikes.</p>","PeriodicalId":76197,"journal":{"name":"National Institute of Animal Health quarterly","volume":"22 2","pages":"45-53"},"PeriodicalIF":0.0,"publicationDate":"1982-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17352127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Survey on antibody against egg drop syndrome-1976 virus among chicken flocks in Japan. 日本鸡群1976型降蛋综合征抗体调查。
National Institute of Animal Health quarterly Pub Date : 1982-01-01
S Yamaguchi, T Imada, H Kawamura, T Horiuchi
{"title":"Survey on antibody against egg drop syndrome-1976 virus among chicken flocks in Japan.","authors":"S Yamaguchi,&nbsp;T Imada,&nbsp;H Kawamura,&nbsp;T Horiuchi","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A survey on antibody against egg drop syndrome-1976 virus was carried out with 4,518 sera collected from 667 flocks over a period from 1971 to 1981 in Japan. Antibody-positive sera were initially detected in 1976, and the number of positive sera increased suddenly in 1979, and a total of 270 sera from 23 flocks were positive. The positive flocks consisted of 20 broiler parent flocks belonging to 9 farms and 3 layer flocks belonging to 2 farms. It seemed from the results of this survey that the prevalence of the virus might have been limited in Japan.</p>","PeriodicalId":76197,"journal":{"name":"National Institute of Animal Health quarterly","volume":"22 2","pages":"88-9"},"PeriodicalIF":0.0,"publicationDate":"1982-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17352128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Establishment of an attenuated strain of porcine parvovirus by serial passage at low temperature. 低温连续传代法建立猪细小病毒减毒株。
National Institute of Animal Health quarterly Pub Date : 1982-01-01
Y Fujisaki, Y Murakami, H Suzuki
{"title":"Establishment of an attenuated strain of porcine parvovirus by serial passage at low temperature.","authors":"Y Fujisaki,&nbsp;Y Murakami,&nbsp;H Suzuki","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>To prepare a live virus vaccine strain for the prevention of porcine parvovirus infection, the 90HS strain, isolated from the brain of a stillborn porcine fetus, was subjected to the first 45 serial passages in swine kidney established (ESK) cells of porcine kidney origin at 30-35 degrees C and to the 46th and later serial passages in the same cells as these at 32 degrees C. When swine were inoculated with the strain at the 38th passage level possessing such properties as expressed with rct/37+ and rct/40-, they presented viremia, virus discharge, and the transmission of virus to other swine. When swine were inoculated with the strain at the 54th and 55th passage level possessing such properties as expressed with rct/37- and rct/40-, they failed to exhibit viremia, virus discharge, and the transmission of virus to other swine, but retained for a long time hemagglutination-inhibiting antibody which had been produced after inoculation. A low virulent variant strain was obtained after 54 serial passages at low temperature. It was called the HT- strain.</p>","PeriodicalId":76197,"journal":{"name":"National Institute of Animal Health quarterly","volume":"22 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"1982-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18124178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Immunity to infection with porcine parvovirus in pigs inoculated with the attenuated HT- strain. 猪接种HT-减毒株对猪细小病毒感染的免疫。
National Institute of Animal Health quarterly Pub Date : 1982-01-01
Y Fujisaki, Y Murakami
{"title":"Immunity to infection with porcine parvovirus in pigs inoculated with the attenuated HT- strain.","authors":"Y Fujisaki,&nbsp;Y Murakami","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Swine were inoculated once with the attenuated HT- strain of porcine parvovirus. Several months later they were challenged by oral inoculation with a field strain of the virus to examine an ability to prevent infection. After challenge inoculation unimmunized control swine exhibited an increase in antibody titer, viremia, and virus discharge. The virus was recovered from many organs. The swine preinoculated with the attenuated HT- strain, however, manifested none of these symptoms and were negative for virus recovery from any organ.</p>","PeriodicalId":76197,"journal":{"name":"National Institute of Animal Health quarterly","volume":"22 1","pages":"36-7"},"PeriodicalIF":0.0,"publicationDate":"1982-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"18124181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Morphology of sulfur granules produced by Staphylococcus aureus and Corynebacterium pyogenes in cows. 金黄色葡萄球菌和化脓性棒状杆菌在奶牛体内产生硫颗粒的形态。
National Institute of Animal Health quarterly Pub Date : 1982-01-01
M Kubo, M Osada, S Konno
{"title":"Morphology of sulfur granules produced by Staphylococcus aureus and Corynebacterium pyogenes in cows.","authors":"M Kubo,&nbsp;M Osada,&nbsp;S Konno","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Sulfur granules produced by Staphylococcus aureus and Corynebacterium pyogenes were studied by light and electron microscopy. They consisted of bacteria and electron-dense amorphous substance which formed clubs in the periphery of each granule. In those produced by Staph. aureus, cocci were seen at the center of each granule. They were round or pleomorphic. Binary fission was frequently observed. In those produced by Coryn. pyogenes, degenerative bacteria were present at the center of each club. Bacteria found just beneath the club had a thick, electron-less-dense cell wall and electron-dense cytoplasm. Those present at the center of the granule were very long and had a cell wall thin and sometimes undulant, containing ribosomes. The electron-dense amorphous substance surrounded these bacteria and faced the neutrophils or epithelioid cells in the periphery of the granule both species of organisms. They might have been produced by bacteria. Cellular reactions of neutrophils, epithelioid cells, fibroblasts and plasma cells were seen around the sulfur granules produced by both species of organisms.</p>","PeriodicalId":76197,"journal":{"name":"National Institute of Animal Health quarterly","volume":"22 3","pages":"130-7"},"PeriodicalIF":0.0,"publicationDate":"1982-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"17815201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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