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121.
J D Carter D W Hird T B Farver C A Hjerpe 《Journal of the American Veterinary Medical Association》1986,188(2):163-167
Salmonellosis was studied during an 11-year period (July 1971 through June 1982) in 245 hospitalized horses. Ten years' data (207 cases) were analyzed in a time series study. Peak seasonality of the disease was from June through September. The cycle curve revealed 3 major outbreaks, with no apparent periodicity. Eighteen Salmonella serotypes caused clinical salmonellosis in horses, but 84% of the cases and 90% of the deaths were caused by 5 serotypes: Salmonella typhimurium, S typhimurium var copenhagen, S anatum, S kottbus, and S saint-paul. Overall, the case fatality rate was 44.9%. Excluding mixed infections, horses infected with S typhimurium and S typhimurium var copenhagen, had a significantly higher (P less than 0.001) case fatality rate (60.4%) than those infected with other Salmonella serotypes (32.3%). 相似文献
122.
Carter LJ 《Science (New York, N.Y.)》1966,152(3721):481-485
123.
Carter LJ 《Science (New York, N.Y.)》1966,153(3732):154-156
124.
Carter LJ 《Science (New York, N.Y.)》1966,153(3744):1624-1626
125.
Carter LJ 《Science (New York, N.Y.)》1966,154(3750):749-751
126.
Carter LJ 《Science (New York, N.Y.)》1966,151(3714):1065-1067
127.
Carter LJ 《Science (New York, N.Y.)》1970,170(3959):718-719
128.
Bacterial overgrowth associated with a naturally occurring enteropathy in the German shepherd dog 总被引:2,自引:0,他引:2
Quantitative and qualitative bacteriological studies were performed on duodenal juice from 19 dogs with chronic small intestinal disease. Bacterial overgrowth was demonstrated in seven German shepherd dogs with minimal histological but specific biochemical abnormalities in the jejunal mucosa. Most frequently this overgrowth comprised bacteria of the normal flora, particularly Escherichia coli and enterococci, but these were occasionally accompanied by bacteria rarely present in the proximal small intestine of the normal dog, particularly Clostridium species. In most cases this overgrowth was associated with raised serum folate and reduced serum vitamin B12 concentrations, a finding consistent with the capacity of many enteric bacteria to synthesise folate and bind vitamin B12. 相似文献
129.
R A Oellermann P Carter M J Marx 《The Onderstepoort journal of veterinary research》1976,43(4):185-188
The IgM and IgG response of mice to sheep erythrocytes (SRBC) and bluetongue virus (BTV) was determined by means of haemolytic plaque assays. Maximum primary IgM response to SRBC occurred after 4 days but declined rapidly to 4% of the maximum by Day 9. A lag period of about 2 days was observed in the appearance of IgG haemolytic plaque-forming cells (PFC) but they reached a maximum after 6-9 days. Secondary immunization resulted in the stimulation particularly of IgG PFC and from Day 6 onwards IgG predominated in the immunological response. The IgM response to BTV was remarkably similar to that observed when SRBC were used as antigen. IgG PFC, however, appeared within a day of the IgM, reaching a peak on Days 4-5. From then onwards, IgG PFC predominated in the response. At BTV concentrations of up to 10 mug per mouse, the virulent strain of BTV type 3 produced the weakest response. At higher antigen concentrations there was very little difference in the response to the serotypes tested, although the virulent strain of BTV type 4 tended to produce the strongest response. 相似文献
130.
N-Methyl-N'-nitro-N-nitrosoguanidine was used in a modified and improved procedure to obtain streptomycin-dependent mutants of type A Pasteurella multocida and type 1 Pasteurella haemolytica. The relative virulence of these mutants was determined by mouse inoculation with and without streptomycin. 相似文献