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41.
Efficacy of long-acting oxytetracycline alone or combined with streptomycin in the treatment of bovine brucellosis 总被引:1,自引:0,他引:1
P Nicoletti F W Milward E Hoffmann L Altvater 《Journal of the American Veterinary Medical Association》1985,187(5):493-495
Twenty-nine Brucella abortus culture-positive cows were treated with a long-acting oxytetracycline (20 mg/kg of body weight, IM) alone or combined with streptomycin (25 mg/kg, IM or IV) or were re-treated with the same product. There appeared to be a synergism by the 2 drugs. Of 21 courses of treatment with the combined antibiotics, 14 (67%) were considered successful. Only 3 of 14 (21%) were successful using oxytetracycline alone. The period from onset of therapy to cessation of shedding in udder secretions was variable. Four cows that ceased shedding were culture-positive in tissues taken at slaughter. The titers on tube agglutination and complement-fixation tests were of limited value in short-term evaluations of therapeutic regimens. 相似文献
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Max Hoffmann 《Journal of pest science》1970,43(5):74-75
Ohne Zusammenfassung 相似文献
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Agr.-Ing. M. Hoffmann 《Journal of pest science》1986,59(5):100-100
A seldom position of the body of swimmingO. zibethica (s. figure) was observed twice in ponds near Ilmenau/Thuringia and Bautzen/Saxony. 相似文献
47.
Effects of different forms and origins of oilseeds on dynamics of ruminal biohydrogenation of long‐chain fatty acids in vitro 下载免费PDF全文
A. Hoffmann H. Steingass M. Schollenberger H. Terry K. Hartung E. Weiss R. Mosenthin 《Journal of animal physiology and animal nutrition》2015,99(6):1031-1038
Dietary unsaturated fatty acids (FA) are intensively hydrogenated in the rumen, resulting in reduced amount of poly‐unsaturated fatty acids (PUFA) and accumulation of several biohydrogenation (BH) products. In this study, BH of PUFA originating from different oilseeds (linseed, soya beans, sunflower seed and rapeseed) present in crushed oilseeds or their free oils were assessed in vitro. The assay substrates were incubated in buffered rumen fluid for 0, 6, 12 and 24 h. After incubation, the FA pattern of the incubated samples was analysed using gas chromatography. Biohydrogenation is defined as disappearance of double bonds (DB) calculated from the contents of unsaturated FA. After 24‐h incubation, the DB contents of all oilseeds were reduced (p < 0.001) by 40–60%. The reduction was higher (p < 0.001) for the crushed form compared with the oil form. In addition, linseed and sunflower seed known as oilseeds with high contents of linolenic acid C18:3 c9,12,15 (LNA) and linoleic acid C18:2 c9,12 (LA), respectively, showed a higher (p < 0.001) accumulation of the BH intermediates conjugated linoleic acid (CLA, isomer C18:2 c9t11) and vaccenic acid (C18:1 t11) for the crushed form, when compared with the oil. These results suggest an inherent effect of the physical form of the assay oilseeds on in vitro BH. Changes in FA pattern during BH in vitro can be attributed to both source and physical form of the assay oilseeds. However, further investigations are warranted to ensure whether the observed in vitro effects on ruminal BH can be confirmed in vivo. 相似文献
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Exotic slugs have become serious pests of canola, at establishment, in Southern Australian high-rainfall cropping zones. Slugs were monitored using relatively inexpensive 300 mm x 300 mm terracotta tiles acting as refuges. An investigation was made of the effects of the time of application of chelated iron baits on the slug species Deroceras reticulatum Müller and Lehmannia nyctelia Bourguignat. Baits reduced the number of surface-active slug species. A single application at sowing provided greater efficacy than one application before sowing, and efficacy was comparable with that of two applications. Canola seedling densities showed a negative response to D. reticulatum numbers; the presence of even one individual per refuge trap reduced seedling numbers below optimum densities. Thistles and other vegetation were associated with increased numbers of slugs. European guidelines for slug monitoring and damage appear to be at least partly applicable to Australian conditions. 相似文献
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Ed Kabara Lorraine M. SordilloSue Holcombe G. Andres Contreras 《Comparative immunology, microbiology and infectious diseases》2014
The periparturient period of dairy cows is characterized by intense lipid mobilization from adipose tissue leading to increased plasma concentrations of nonesterified fatty acids (NEFA). High NEFA are a predisposing factor for inflammatory based diseases. A major component of these diseases is uncontrolled macrophage/monocyte inflammatory responses. Changes in the endocrine activity of adipose tissue during the periparturient period could impact macrophage function by modifying the secretion of adipokines including adiponectin. Currently, the effects of adiponectin on monocyte activation in dairy cattle are unknown. In humans and rodents, this adipokine regulates monocyte phenotype and alterations in its plasma levels are linked with the development of inflammatory diseases. The objectives of this study were to establish associations between plasma adiponectin expression dynamics and different markers of lipid mobilization during the periparturient period of dairy cows and to characterize the effects of adiponectin on the inflammatory response of bovine monocytes. Plasma adiponectin, NEFA, BHB, albumin, and subcutaneous and retroperitoneal fat depots depth were measured during the periparturient period of dairy cows. In vitro, bovine monocytes were cultured with adiponectin to assess changes in pro-inflammatory responses following LPS stimulation. Results from this study demonstrate that alterations in plasma adiponectin levels in periparturient cattle are inversely correlated with the concentrations of plasma NEFA, an important marker of lipid mobilization. Furthermore, adiponectin exposure significantly decreased monocyte expression of TNFα after LPS stimulation thus markedly reducing their inflammatory response. Reduced plasma adiponectin during the periparturient period could predispose dairy cows to the development of uncontrolled monocyte inflammatory responses. 相似文献
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