Antigenic Non-Relationship of Two Bovine Eperythrozoa Demonstrated By the Immunofluorescent Method     

Jaakko Tuomi  Raili Tanskanen 《Acta veterinaria Scandinavica》1980,21(4):699

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Immunization of Cattle Against Rabies Using Inactivated Cell Culture Vaccines     

L. Sihvonen  K. Kuhnen  E. Neuvonen 《Acta veterinaria Scandinavica》1994,35(4):371

Twenty-one heads of cattle were vaccinated with Madibovin, 31 with Rabdomun and 127 with Rabisin on 4 different farms. Rabies neutralizing antibody titre (≥0.5 IU/ml) was detected in 80% of 163 animals tested about 1 month and in 42% of 133 animals tested about 1 year after primary vaccination. On 3 of the farms 86 animals received booster vaccination about 1 year after primary vaccination. All these animals had antibody titre (≥0.5 IU/ml) about 1 month after booster and antibody levels were higher than after the primary vaccination. Rabies antibody titres (≥0.5 IU/ml) were detected in 96% of 50 animals tested 1 year after the booster. No significant differences (p>0.05) in antibody levels were detected between animals vaccinated with Madibovin or Rabisin (farm C) respectively with Rabisin or Rabdomun (farm D) at any collection time. Responses to rabies vaccines varied considerably between the farms. After primary vaccination of the animals on 2 farms with the same batch of Rabisin, the antibody levels clearly differed (p<0.0001) between the farms.Our results indicate that booster is always necessary after primary vaccination to ensure that all animals are protected.  相似文献   

Latex test for rapid rotavirus diagnosis in calves     

A Sukura  E Neuvonen 《Acta veterinaria Scandinavica》1990,31(1):1-4

A latex agglutination test (LA) was compared with direct electron microscopy (EM) for detection of rotavirus infection in calves. A total of 375 samples from 62 calves were collected. Samples were taken when the calves were 1, 3, 5, 7, 10 and 20 days old and some scours samples were collected as well. Altogether 45/375 (12%) specimens were positive in LA and 10/375 (2.7%) were positive in EM. Samples positive in EM were also positive in LA. Out of the 62 calves studied 26/62 (42%) were positive in LA and 8/62 (13%) in EM. We found the LA very easy to perform, to be more sensitive than the EM method and probably a rather specific method for detection of rotavirus infection.  相似文献   

Prevalence and geographic distribution of bovine viral diarrhoea (BVD) infection in Finland 1993-1997     

Nuotio L  Juvonen M  Neuvonen E  Sihvonen L  Husu-Kallio J 《Veterinary microbiology》1999,64(2-3):231-235

Bulk milk samples from every herd supplying milk to dairies in Finland were examined for the presence of antibodies to BVD virus (BVDV) annually during 1993-1997. The highest prevalence, 0.99% in 1994, declined to 0.37% in 1996; however, this favourable trend appeared to discontinue in 1997, where the prevalence remained at 0.41%. In 1993, sera of all individual animals from bulk milk antibody-positive herds were examined for the presence of these antibodies. Since 1994, only sera of animals from herds with a bulk milk absorbance reading greater than 0.250 in the EIA test were examined individually. Three geographic foci of BVDV antibody-positive dairy herds were resolved in 1994, one in the north-western, another in the eastern and a diffuse third in the southern part of Finland. A distinct limiting of the spread was apparent in 1997. Beef cattle were also studied during 1993-1997; in 1993 breeding units, in 1994 mainly beef suckler herds and in 1995-1997 serum samples of beef animals at slaughter were examined for the presence of antibodies to BVDV. The prevalence of seropositive herds in 1993 and 1994 was 30.2% and 3.2%, respectively, while the prevalence among slaughter animals ranged 0.8-1.6%. Seronegative animals in herds with > 50% of seropositive animals were examined for the presence of BVD-virus. A total of 40 dairy herds and two beef herds with viraemic (persistently infected, PI) animals was encountered during 1993-1997. A comprehensive control programme and a more specific, cooperatively funded eradication programme for dairy cattle were launched in 1994. These programmes most probably contributed to the decline in prevalence during 1994-1996.  相似文献   

Effect of feed pellet size on production parameters of pike‐perch (Sander lucioperca)          下载免费PDF全文

Jaakko Mattila  Juha Koskela 《Aquaculture Research》2018,49(1):586-590

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Occurrence of infectious fish diseases in fish farms in northern Finland.     

Kernen Koski  Kulonen Ek-Kommonen Neuvonen 《Acta veterinaria Scandinavica》1992,33(2):161-167

A total of 47 fish located in 10 lake and river systems in northern Finland were examined for furunculosis, enteric redmouth diseases (ERM), viral fish diseases and the parasite Gyrodactylus salaris. Furunculosis was found in 2 fish farms in different watercourses, ERM in 8 fish farms in 3 watercourses and viral diseases were not found at all. G. salaris was looked for only in salmon and rainbow trout and was found in both species in 3 farms belonging to 2 watercourses.  相似文献   

An epidemic of sylvatic rabies in Finland--descriptive epidemiology and results of oral vaccination.     

M Nyberg  K Kulonen  E Neuvonen  C Ek-Kommonen  M Nuorgam  B Westerling 《Acta veterinaria Scandinavica》1992,33(1):43-57

When rabies reappeared in Finland in April 1988, the country had been rabies free since 1959. Soon a picture of sylvatic rabies become evident, its main vector and victim being the raccoon dog (Nyctereutes procyonoides). Between 8 April 1988 and 16 February 1989, 66 virologically verified cases were recorded (48 raccoon dogs, 12 red foxes, 2 badgers, 2 cats, 1 dog and 1 dairy bull) in an area estimated at 1700 km2 in south-eastern Finland. The greatest distance between recorded cases was 67 km. A positive reaction with monoclonal antibody p-41 indicated that the virus was an arctic-type strain. A field trial on oral immunization of small predators was initiated in September 1988 using Tübingen fox baits according to the Bavarian model of bait distribution. Each bait contained 5*10(7) TCID50/ml modified live rabies virus (SAD-B19). The 6 months' surveillance indicate a seroconversion rate of 72% (N = 126) in the raccoon dog population, 67% (N = 56) in the red foxes and 13% (N = 16) in the badgers, when titers greater than or equal to 1.0 IU/ml are considered seropositive. In the whole follow-up period, no statistically significant difference could be detected between the raccoon dogs and red foxes in the rate of seroconversion or in the uptake of tetracycline from the baits. Notably high antibody levels were recorded in both raccoon dogs and red foxes within 4-5 months after vaccination. Of the seropositive animals, the proportion of animals with titers 3.0 IU/ml or greater was higher in raccoon dogs (73%) than in red foxes (51%) (x2 = 5.29, p less than 0.05). The trial shows that raccoon dogs can be immunized against rabies in the field with vaccine baits originally developed for controlling sylvatic rabies in foxes.  相似文献   

Viral and bacterial pathogens in bovine respiratory disease in Finland     

Härtel H  Nikunen S  Neuvonen E  Tanskanen R  Kivelä SL  Aho R  Soveri T  Saloniemi H 《Acta veterinaria Scandinavica》2004,45(3-4):193-200

Pathogens causing bovine respiratory tract disease in Finland were investigated. Eighteen cattle herds with bovine respiratory disease were included. Five diseased calves from each farm were chosen for closer examination and tracheobronchial lavage. Blood samples were taken from the calves at the time of the investigation and from 86 calves 3-4 weeks later. In addition, 6-10 blood samples from animals of different ages were collected from each herd, resulting in 169 samples. Serum samples were tested for antibodies to bovine parainfluenza virus-3 (PIV-3), bovine respiratory syncytial virus (BRSV), bovine coronavirus (BCV), bovine adenovirus-3 (BAV-3) and bovine adenovirus-7 (BAV-7). About one third of the samples were also tested for antibodies to bovine virus diarrhoea virus (BVDV) with negative results. Bacteria were cultured from lavage fluid and in vitro susceptibility to selected antimicrobials was tested. According to serological findings, PIV-3, BAV-7, BAV-3, BCV and BRSV are common pathogens in Finnish cattle with respiratory problems. A titre rise especially for BAV-7 and BAV-3, the dual growth of Mycoplasma dispar and Pasteurella multocida, were typical findings in diseased calves. Pasteurella sp. strains showed no resistance to tested antimicrobials. Mycoplasma bovis and Mannheimia haemolytica were not found.  相似文献   

Occurrence of antibodies to group specific chlamydia antigen in cattle in various areas of Finland.     

E Neuvonen 《Acta veterinaria Scandinavica》1979,20(1):73-81

The occurrence of group specific complement fixing antibodies was studied in 361 cattle sera from 36 herds in 6 areas in Finland. Sixty-two (17.2%) were positive. The antibody frequency increased significantly from the south to the north and the frequency was significantly higher in forest than in field pastures. The reasons for the differences are discussed. The tick, Ixodes ricinus, perhaps has no significant epidemiological role in chlamydial epidemiology in Finland.  相似文献   

Access to green areas and the frequency of visits – A case study in Helsinki     

Marjo Neuvonen  Tuija Sievnen  Susan Tnnes  Terhi Koskela 《Urban Forestry & Urban Greening》2007,6(4):235-247

Environmental considerations concerning physical activity and health relate to accessibility, and this accessibility is directly influenced by how recreation areas and facilities are provided and managed. This study aims to provide some evidence to support the general argument that a good supply of recreation opportunities encourages people's participation in outdoor recreation. The study's data are compiled from an outdoor recreation survey of Finnish 15- to 74-year olds, conducted between 1998 and 2000, which focused on the recreational behaviour of people living in Helsinki (n=367), and their visits to close-to-home outdoor recreation areas. Almost all (97%) of the Helsinki residents surveyed participated in outdoor recreation during the year. Half of them embarked on a recreational outing daily or every other day. The most typical close-to-home activity was walking for pleasure or fitness. Other popular activities were cycling, jogging, dog walking and outings with children. Physical or fitness activities represented about 90% of all close-to-home outings. Those who lived in the suburbs of Helsinki participated in close-to-home recreation significantly more often than those living in the city centre, and had done so more recently in terms of when the survey was conducted. The amount of green areas in the vicinity of the participant's residence and the short distance to green areas suitable for recreational use increased the number of close-to-home outings among Helsinki residents. This supports the argument that a good provision of opportunities promotes an active lifestyle. Thus, recreation areas and facilities should be located close to residential areas, and provide safe, comfortable and year-round access for daily outings.  相似文献