An outbreak of viral hepatitis ("fox encephalitis") in a blue fox farm     

K Nordstoga  J Krogsrud  S F Mohn  G Loftsg?rd  K Westbye 《Nordisk veterinaermedicin》1972,24(7):345-355

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Experimental Encephalitozoonosis in the Blue Fox: Clinical,Serological and Pathological Examinations of Vixens after Oral and Intrauterine Inoculation     

S. F. Mohn  K. Nordstoga  I. W. Dishington 《Acta veterinaria Scandinavica》1982,23(4):490

Inoculations of vixens with Encephalitozoon cuniculi (E. cuniculi), performed orally, either before or in the gestation period, or directly into the uterus at oestrus, induced clinical encephalitozoonosis in the offspring. The infection of the vixens, indicated by a general E. cuniculi antibody response, appeared to run a subclinical course. Endometritis was detected in some of the vixens when examined at the end of the trial. A temporary increase of total protein, albumin and globulin in the inoculated vixens compared to the controls was detected in the final 2 weeks of the gestation, concomitantly with the rise in humoral E. cuniculi antibody titres. The antibody levels appeared significantly higher in the group of vixens inoculated directly into the uterus than in the orally inoculated groups. Vixens exposed to the parasite seemed to possess a certain degree of acquired resistance to re-infection with the parasite when exposed in the following breeding season.  相似文献   

Interactions of photoperiod,temperature, duration of short-day treatment and plant age on flowering of Fragaria x ananassa Duch. cv. Korona     

Michèl J. Verheul  Anita Sønsteby  Svein O. Grimstad 《Scientia Horticulturae》2006

The effects of photoperiod (10, 12, 16, 20 or 24 h), day-temperature (12, 15, 18, 24 or 30 °C), the number of short days (14, 21 or 28 days), plant age (4, 8 or 12 weeks) and their interactions on flower and inflorescence emergence were investigated in strawberry cv. Korona. No flowers emerged in plants exposed to photoperiods of 16, 20 or 24 h or to a short-day treatment for 14 days. All plants exposed to short days at daily photoperiods of 10 or 12 h for 21 days or longer, emerged flowers at temperatures between 12 and 18 °C. A further increase in temperature led to a drastic decrease in the total number of flowers per plant. A short-day treatment (10 or 12 h photoperiod) of 28 days resulted in highest numbers of inflorescences and flowers per plant, while a short-day treatment of 21 days resulted in the highest numbers of flowers per inflorescence. Complete flower induction was observed in only 4-week-old runner plants. The number of inflorescences and the number of flowers per inflorescence increased with plant age. However, the start of flowering was delayed with increasing plant age.  相似文献   

Nature conservation in forest management plans for small-scale forestry in Sweden     

Fredrik Ingemarsson  Lars Hedman  Bo Dahlin 《Small-Scale Forestry》2004,3(1):17-34

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Regional differences in harvesting levels and wood-based employment in Norway     

Ståle Størdal  Kristian Lein  Morten Ørbeck  Svein Erik Hagen 《Small-Scale Forestry》2004,3(1):35-47

In this paper, a statistical framework based upon shift-share analysis is employed to analyse regional differences in Norway regarding changes in harvesting levels and number of full-time equivalent employees in wood processing. Changes in harvesting levels and employment differ between regions. A tendency found is that there has been a moderate centralisation in the period 1990–2000 with respect to harvesting levels. The analysis indicates that remote municipalities harvest relatively more in periods with a high harvesting intensity, while the harvesting level is more evenly distributed among the regions in other periods. There is, however, no clear picture whether there has been a centralisation or decentralisation regarding woodbased employment. Differences between regions may therefore be explained by structural factors, for example the degree to which firms in a particular region concentrate on production of bulky commodities or more customeroriented niche production.  相似文献   

Racing‐associated fatalities in Norwegian and Swedish harness racehorses: Incidence rates,risk factors,and principal postmortem findings     

Ingunn Risnes Hellings  Eystein Skjerve  Erika Karlstam  Mette Valheim  Carl Fredrik Ihler  Constanze Fintl 《Journal of veterinary internal medicine / American College of Veterinary Internal Medicine》2022,36(2):778

BackgroundThere are no reports on the number of fatalities or causes of death in the Norwegian and Swedish harness racehorses.ObjectivesThe incidence rates (IRs), risk factors, and postmortem findings in horses that died or were euthanized associated with racing between 2014 and 2019 were investigated.AnimalsThirty‐eight Standardbreds and 10 Norwegian‐Swedish Coldblooded Trotters died or were euthanized associated with racing. A total of 816 085 race‐starts were recorded.MethodsIncidence rates were calculated for both countries and horse breeds. Risk factors for sudden death were identified using a case‐control logistic model. Postmortem examinations were performed in 43 horses.ResultsThe overall fatality IR was 0.059/1000 race‐starts. Traumatic injuries accounted for 14.5%, while sudden death for 85.5% of fatalities. Only minor differences between countries and breeds were recorded. The number of starts within the last 30 days increased the risk of sudden death (5 starts odds ratio (OR) 228.80, confidence interval (CI) 10.9‐4793). An opposite non‐linear effect was observed in number of starts the last 180 days (>10 starts OR 0.12, CI 0.02‐0.68). Seven horses were euthanized because of catastrophic injury. Acute circulatory collapse because of suspected cardiac or pulmonary failure or both was recorded in 30 horses, while major hemorrhage after vessel rupture was the primary cause of death in 10 cases. One horse collapsed and died but was not submitted for autopsy.Conclusions and Clinical ImportanceComparatively low rates of catastrophic orthopedic fatalities were reported, while causes and IR of sudden death were similar to previous studies.  相似文献   

Obesity and corporate responsibility     

Kolset SO 《Public health nutrition》2006,9(1):99-100

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Formation and availability of methylmercury in mercury-contaminated sediment: effects of activated carbon and biochar amendments     

Sørmo  Erlend  Silvani  Ludovica  Braaten  Hans Fredrik Veiteberg  Bryntesen  Tina  Eek  Espen  Cornelissen  Gerard 《Journal of Soils and Sediments》2022,22(3):1041-1053

Journal of Soils and Sediments - As the formation of toxic and bioaccumulative methylmercury (MeHg) in Hg-contaminated sediments is of great concern worldwide, suitable remediation options are...  相似文献   

The Norwegian position on culling     

Ludvigsen S 《Science (New York, N.Y.)》2005,308(5721):497-498

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Crown Condition and Needle Chemistry of Norway Spruce in Relation to Critical Loads of Acidity in South-East Norway     

Solberg  Svein  Kvindesland  Sheila  Aamlid  Dan  Venn  Kåre 《Water, air, and soil pollution》2002,140(1-4):157-171

This study shows that it is questionable if critical load modelling can contribute in the search for harmful effects of acid deposition on forest health at present. Critical loads forS and N deposition were calculated using the MAGIC and PROFILE models for more than 100 monitoring plots in Norway spruce forestin south-east Norway. The two models gave different results, likely due to differences in the models, including differences in the time spans applied. The PROFILE model gave considerably more plots with exceedance than the MAGIC model.At plots where the CL was exceeded, calcium/aluminium (Ca/Al) ratios in the soil solutions were low. However, very few of theseplots had possible harmful values of the Ca/Al-ratio. More than 50 yr seems in most cases to be needed to bring Ca/Al ratios below 1.0. Present deposition was better correlated with measured forest condition variables such as crown condition and needle chemistry,than with modelled exceedance according to any of the two methods. The deposition of S and N was weakly, negatively correlated to foliar concentrations of P and Ca, and positivelyto foliar N concentrations and crown density.  相似文献