Effect of circulating, maternally derived antibody on the development of a local immune response in the intestine of the neonatal pig.     

D L Watson  M A Bennell  T D Chaniago 《American journal of veterinary research》1979,40(1):61-65

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Cell-mediated immune responses of neonatal calves and adult cattle following inoculation with PPD of Mycobacterium bovis associated with a mycobacterial immunopotentiating glycolipid and oil droplets.     

L F Woodard  H W Renshaw  D Burger  C S McCain  R B Wilson 《American journal of veterinary research》1979,40(5):636-644

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Endotoxin absorption in hay-fed and lactic acidotic sheep.     

T L Huber  M C Peed  R C Wilson  D D Goetsch 《American journal of veterinary research》1979,40(6):792-794

Absorption of endotoxin from the gastrointestinal tract was evaluated in hay-fed and lactic acidotic sheep duodenally infused with 10 mg of Escherichia coli endotoxin, and in lactic acidotic sheep not infused. The effect of abomasal fluid on biological activity of endotoxin was also evaluated. Leukopenia was the criterion used for detecting endotoxemia. Absorption of endotoxin from the gastrointestinal tract was not detected in either hay-fed or lactic acidotic sheep. Endotoxin appeared to maintain its activity after incubation with abomasal fluid, and the presence of endogenous endotoxin in abomasal contents was indicated. The results indicate that endotoxin of alimentary origin may not be involved in the lactic acidosis syndrome in ruminants.  相似文献   

Entero-colitis in the horse. A description of 46 cases (author's transl)]     

K Nielsen  G Vibe-Petersen 《Nordisk veterinaermedicin》1979,31(9):376-384

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Newcastle disease in Cyprus: A review     

K. Polydorou 《Tropical animal health and production》1979,11(1):37-41

Summary The first Newcastle disease epidemic in Cyprus was reported in 1949 to 1950 and between 1953 and 1959 there was a second. In November 1977 another Newcastle disease outbreak occurred. Measures implemented immediately were: quarantine of all foci of infection, destruction of diseased and in-contact birds, disinfection of premises and island-wide (Government controlled) vaccination. Within a month the epidemic was brought under control. In all 47 outbreaks were recorded with the loss of about 35,000 birds. Only 2 commercial units were affected, the remaining outbreaks occurring in premises of back-yard poultry keepers. The virus was the Asiatic type.

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La Enfermedad De Newcastle En Chipre: Revisión De La Literatura

Resumen La primera epidemia de Newcastle en Chipre se describio en 1949–50 y la segunda entre 1953 y 1959. En Noviembre de 1977 ocurrio otro brote. Las medidas tomadas fueron: cuarentena de todos los focos de infección, destrucción de todas las aves enfermas y en contacto, desinfección de los galpones y vacunación general. La epidemia se controló en un mes. En los 47 brotes diagnosticados, hubo una pérdida calculada de 35 000 aves. La enfermedad se diagnosticó en dos empresas comerciales y en unidades pequeñas familiares. El virus aislado fue el tipo Asiático.

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La Maladie De Newcastle A Chypre—Revue

Résumé La première appartition de la maladie de Newcastle à Chypre, a eu lieu en 1949–1950, avec une seconde vague entre 1953 et 1959.La maladie est répparue en 1977. Les mesures assitôt prises ont été: la mise en quarantaine des foyers d'infection, la destruction des animaux malades et des animaux contaminés, la désinfection des locaux et une large vaccination, sous contrôle officiel, des volailles de l'Ile. En l'espace d'un mois la maladie a été enrayée. Pour les 47 foyers constatés les pertes se sont élevées à environ 35 000 têtes. Deux élevages commerciaux ont seulement été atteints, les autres foyers étant apparus dans les poulaillers des petits éleveurs.

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A simple technique to differentiate between animals infected with Yersinia enterocolitica IX and those infected with Brucella abortus.     

K R Mittal  I R Tizard 《Research in veterinary science》1979,26(2):248-250

While both Brucella abortus and Yersinia enterocolitica IX have O antigens in common, they differ significantly with respect to motility. Thus Br abortus is always non-motile while Y enterocolitica is motile when grown at room temperature. The presence of yersinia H agglutinins in serum can be shown to be evidence of previous exposure to Y enterocolitica. These agglutinins are not generated by brucella infection. A rapid H agglutination test will serve to provide this differentiation without interference from cross-reacting O antigens.  相似文献   

Replication of turkey herpesvirus and Marek's disease virus in chick embryo skin organ culture.     

L B Prasad 《Research in veterinary science》1979,27(1):82-88

Turkey herpesvirus (HVT) and an attenuated Marek's disease virus (MDV) replicated in organ cultures of chick embryo skin as assessed by immunofluorescence and/or electron microscopy. HVT-specific immunofluorescent antigen was detected in the feather follicle epithelium (FFE) and in the surface layer of the skin epidermis. Electron microscopy of infected explants revealed herpes-type cytopathology. Immature particles of both viruses appeared first in the nucleus. Oval or horseshoe-shaped non-enveloped particles of HVT and enveloped virions of MDV were seen in the cytoplasm of some transitional cells. The difference in the ability of HVT and MDV to form an envelope was believed to account for the difference in their transmissibility in chickens. The results indicated that HVT replicated in the FFE and in the epidermis of the skin. However, attempts to localise the site(s) of MDV replication by electron microscopy were unsuccessful.  相似文献   

The susceptibility of chicken kidney and oviduct organ cultures to a vaccine strain of avian infectious bronchitis virus.     

R W Peters  J H Darbyshire  J K Cook 《Research in veterinary science》1979,26(1):38-40

The minimal infectious dose of the H52 strain of infectious bronchitis virus for organ cultures of oviduct and kidney was compared in chickens of different ages. Organ cultures of oviduct were found to be highly susceptible to infection regardless of the age of chicken and no difference in susceptibility could be demonstrated between cultures of the magnum and uterus regions of the mature oviduct. Kidney organ cultures were less susceptible and resistance to infection increased significantly (P less than 0.001) with the age of the chicken from which cultures were prepared.  相似文献   

The blood volumes and erythrokinetics of Ndama and Zebu cattle experimentally infected with Trypanosoma brucei.     

J D Dargie  P K Murray  M Murray  W I McIntyre 《Research in veterinary science》1979,26(2):245-247

The responses of susceptible Ndama and Zebu cattle to experimental infection with Trypanosoma brucei were compared using haematological, parasitological and radioisotopic methods. Animals of both breeds became anaemic, but this was more severe in the Zebu cattle, one of which died. Although the prepatent period was the same in animals of both breeds, the levels of the first and subsequent peaks of parasitaemia were higher in the Zebu. The anaemia was due to an accelerated rate of red cell break-down which was more marked in the Zebu cattle. Haemodilution was not a feature. There was no evidence of dyshaemopoiesis but iron reutilisation from degraded erythrocytes was impaired. The greater resistance of the Ndama to T brucei infection could not be attributed to the capacity of this breed to mount a more effective erythropoietic response than the Zebu.  相似文献   

Serological study on the occurrence of bovine leukosis in Switzerland]     

F Steck  H Kupferschmied  W Leemann  R Kaderli  W Bommeli  P Gafner  H K Sp?rri 《Schweizer Archiv für Tierheilkunde》1979,121(9):439-450

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