Affiner votre recherche
Résultats 231-240 de 596
Ixodid ticks on dogs belonging to people in rural communities and villages in Maputo Province, Mozambique Texte intégral
2008
De Matos, C.(Instituto de Investigação Agrária de Mozambique ,University of Pretoria Faculty of Veterinary Science Department of Veterinary Tropical Diseases) | Sitoe, C.(Instituto de Investigação Agrária de Mozambique) | Neves, L.(Universidade Eduardo Mondlane Faculdade de Veterinária) | Bryson, N.R.(University of Pretoria Faculty of Veterinary Science Department of Veterinary Tropical Diseases) | Horak, I.G.(University of Pretoria Faculty of Veterinary Science Department of Veterinary Tropical Diseases,Onderstepoort Veterinary Institute ,University of the Free State Department of Zoology and Entomology)
The species composition and geographic distribution of ixodid ticks infesting domestic dogs owned by people in rural communities and villages in Maputo Province was established by collecting ticks from dogs at each of 27 localities spread throughout the province. Ticks were collected from a total of 132 dogs, and nine species belonging to four genera were identified. One dog was infested with six species, three with five and 13 with four species. Haemaphysalis elliptica followed by Rhipicephalus simus were present on dogs at most localities, and their geographic distribution in Maputo Province has been mapped for the first time.
Afficher plus [+] Moins [-]Prevalence of bovine trypanosomosis in Central Mozambique from 2002 to 2005 Texte intégral
2008
E.J.K. Specht
The study is the result of analyzing 16 895 blood smears of cattle collected at 180 sites in the provinces of Manica, Sofala, Zambézia and Tete in Mozambique. Of the blood smears 73.9 % were from Manica, 11.8 % from Tete, 8.5 % from Sofala and 5.8 % from Zambézia; 75.6 % of these were collected from smallholder cattle. Infections with trypanosomes were highest in smallholder cattle from Sofala Province with 36.8 % of the 872 blood smears examined positive for trypanosomes, and lowest in cattle of commercial farmers in Manica Province with only 6.2 % of 2 252 blood smears being positive. Trypanosoma congolense was the predominant species, followed by Trypanosoma vivax and Trypanosoma brucei sensu lato. Trypanosoma brucei, which also infects humans, was more frequent in the districts of Buzi, Mutarara and Morrumbala with 15.1 %, 10.5 % and 9.8 % of all examined cattle in 2005 being infected with it, respectively. The results show a significant increase in the infection rate with trypanosomes compared with results obtained in previous years by the Regional Veterinary Laboratory in Manica Province and by the Regional Tsetse and Trypanosomiasis Control Programme in Zambézia, Tete and Sofala provinces.
Afficher plus [+] Moins [-]Epidemiological survey on gastro-intestinal and blood-borne helminths of dogs in north-east Gabon : research communication Texte intégral
2008
B. Davoust | T. Normand | O. Bourry | H. Dang | E. Leroy | G. Bourdoiseau
A survey of helminth parasites was carried out on 198 dogs living in almost complete liberty in villages in the northeast of Gabon. Faeces and blood samples were collected and analysed. Dirofilariaimmitis antigen was detected in 13.6 % of dogs using the SNAP 3Dx® test, a commercially available enzyme-linked immunosorbent assay (ELISA). Faecal examination revealed that 91.4 % of dogs were infected by intestinal helminths. Ascarids were found in 58.5 % of the samples. Trichuris vulpis was observed in 49.5 % of cases, and Uncinaria spp. and Ancylostoma spp. in 34.8 %, Spirocerca lupi in 25.3 % and Capillaria spp. in 10.6 %. Cestode embryophores were found in 8.6 % of the samples.
Afficher plus [+] Moins [-]Prevalence of the dog nematode <i>Spirocerca lupi</i> in populations of its intermediate dung beetle host in the Tshwane (Pretoria) Metropole, South Africa Texte intégral
2008
C.A. Du Toit | C.H. Scholtz | W.B. Hyman
Spirocerca lupi (Spirurida: Spirocercidae) is a cosmopolitan parasite, principally of domestic dogs and dung beetles are its main intermediate hosts. In South Africa there has recently been growing concern over the upsurge of reported cases of clinical spirocercosis in dogs, while little is known or understood about the dynamics of the host-parasite associations between dung beetles and this nematode. We determined and compared the prevalence of infection in dung beetles between rural, urban and periurban areas of Tshwane (Pretoria) Metropole. Dung beetles were sampled during April and October 2006, at various localities in each of these areas. Localities were selected on the basis of being focal areas of high infection with S. lupi in dogs. Pig, dog and cow dung-baited pitfall traps were used for sampling the beetles. Trap contents were collected 48 h after the traps had been set and only dung beetles were collected from the traps. In total, 453 specimens belonging to 18 species were collected from 63 pitfall traps in all three areas. The numbers of species that were collected varied among the three areas. Dung beetles, irrespective of species (18) and numbers (447), predominantly preferred pig dung. The prevalence of dung beetles infected with the larvae of S. lupi varied considerably in the three areas. In the urban area 13.5 % of the dung beetles dissected were infected, while the prevalence of S. lupi in dung beetles in the rural area was 2.3 %. All the dung beetles that were infected with this nematode showed a preference for omnivore (pig and dog) dung.
Afficher plus [+] Moins [-]Field experiences with early pregnancy diagnosis by progesterone-based ELISA in sows Texte intégral
2008
M.H. Boma | G. Bilkei
In four Kenyan pig breeding units the pregnancy diagnosis of sows has been carried out in two groups: Group 1 (n = 1911): the sows were transrectaly pregnancy tested between Days 1722 post-mating by ultrasound. Sows testing non-pregnant immediately received one dose of 400 IU pregnant mare serum gonadotropin (PMSG) (equine chorion gonadotropin, eCG) and 200 IU human chorion gonadotropin (hCG). On showing signs of oestrous, the animals were subsequently artificially inseminated (AI). Group 2 (n = 1923): sows were pregnancy tested by serum progesterone (P4)-based enzyme-linked immunosorbent assay (ELISA) on Day 17 post-breeding. P4 concentrations were categorized as positive (> 5 ng/ml) or negative (< 5 ng/ml). Sows testing non-pregnant immediately received one dose of 400 IU PMSG and 200 IU hCG by injection, and were subsequently artificially inseminated. The following parameters were evaluated: sows diagnosed non-pregnant, days from first post-weaning insemination until the sows were inseminated at their first return to oestrus; farrowing rate and total piglets born and number of live-born piglets in litters. The percentage of sows diagnosed non-pregnant in the two groups, as well as the totals of born piglets and of live-born piglets in litters did not differ significantly between the two groups. The number of days from the first post-weaning mating until the sows were artificially inseminated at their first return to oestrus and the administration of eCG and hCG was shorter (P < 0.01) and farrowing rate was higher (P < 0.01) in the ELISA-tested sows.
Afficher plus [+] Moins [-]Field efficacy of a combined vaccine supplemented with recombinant Pasteurella multocida toxin subunits against atrophic rhinitis
2008
Kang, M.L. (Seoul National University, Seoul, Republic of Korea) | Shin, S.W. (Seoul National University, Seoul, Republic of Korea) | Rayamahji, Nabin (Seoul National University, Seoul, Republic of Korea) | Seo, Y.S. (Seoul National University, Seoul, Republic of Korea) | Lee, S.I. (Seoul National University, Seoul, Republic of Korea) | Lee, W.H. (XP Bio Inc, Anseong, Republic of Korea) | Yoo, H.S. (Seoul National University, Seoul, Republic of Korea), E-mail: [email protected]
We have investigated efficiency of a recombinant subunit Pasteurella multocida toxin (PMT) that was mixed with a vaccine consisted of inactivated whole cells of Bordetella bronchiseptica, P. multocida (type A and D). For verification of the efficacy of the vaccine, all experimental pigs (suckling piglets, sow and gilts) in the three farms were vaccinated. Antibody titers against B. bronchiseptica and P. multocida type A of the vaccinated pigs by microplate agglutination were significantly higher than those of the control pigs (p less than 0.05). Similar patterns were observed in the analysis of anti- PMT neutralizing antibody by serum neutralizing method using Vero cell (p less than 0.05). Anti- P. multocida type D antibody titer of the vaccinated sows and gilts by ELISA showed significant differences with those of the non-vaccinated pigs (p less than 0.05). Although antibody titers increased, it was unable to fine out the differences in the clinical signs between the vaccinated and non-vaccinated pigs. However, the increase in body weight of the vaccinated piglets was observed in comparison with the non-vaccinated piglets on a farm. At slaughtering of the pigs, pathological lesions in the turbinate bones of the vaccinated pigs were significantly lower than those of the non-vaccinated pigs (p less than 0.001). These results suggested that efficacy of the vaccine in pigs demonstrated to protect against atrophic rhinitis in Korea.
Afficher plus [+] Moins [-]Characterization of Akabane virus (KV0505) from cattle in Korea
2008
Yang, D.K. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea), E-mail: [email protected] | Kim, Y.H. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea) | Kim, B.H. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea) | Kweon, C.H. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea) | Yoon, S.S. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea) | Song, J.Y. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea) | Lee, S.H. (Jeju Veterinary Research Institute, Jeju, Republic of Korea)
Akabane disease is caused by an arthropod-borne viral pathogen and leads congenital abnormalities of the central nervous system in infected ruminants. One isolate, KV0505, showed cytopathic effect in Vero cells. The KV0505 isolate was obtained from plasma, which was collected from a cattle raised on Jeju Island in May 2005. Jeju Island is located near the southern part of the Korean peninsula. The isolate was confirmed as Akabane virus (AKAV) by immunofluorescence assay using AKAV specific monoclonal antibodies and reverse transcription polymerase chain reaction (RT-PCR). Suckling mice inoculated with the isolate showed signs of paralysis and died within 10 days post-inoculation. Comparisons of the KV0505 N gene sequence with 39 other known AKAV strains revealed nucleotide homologies ranging from 83.6% (MP496 strain) to 99.7% (M171 strain). When compared with the K-9 strain, which was isolated from a cow in Korea in 1994, the nucleotide sequence homology with the N gene was 99.7%. Thus, genes of the KV0505 isolate were closely related to those of the M171 strain, which were clustered into the Ic group of AKAV.
Afficher plus [+] Moins [-]Prevalence and genotypes of pestivirus in Korean goats
2008
Yang, D.K. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea), E-mail: [email protected] | Kweon, C.H. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea) | Kim, B.H. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea) | Choi, C.U. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea) | Kang, M.I. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea) | Hyun, B.H. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea) | Hwang, I.J. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea) | Lee, C.S. (Chungbuk Livestock and Veterinary Research Institute, Cheongwon, Republic of Korea) | Cho, K.O. (Chonnam National University, Gwangju, Republic of Korea)
In total, 1,142 serum samples were collected from 223 goat flocks rising in five different regions of Korea. These samples were screened for the presence of border disease virus (BDV) antibodies using an enzyme linked immunosorbent assay. Of the 1,142 samples, we found 47 bovine viral diarrhea virus (BVDV) positive cases (4.1%). These positive serum samples were also examined further by using the virus neutralization test against BDV. In addition, samples were tested for both BVDV and classical swine fever virus (CSFV). All of the samples that were seropositive for BDV also demonstrated positive antibody titers against BVDV and CSFV. Due to their common antigenicity, we also determined further the prevalence and carried out virus neutralization test against three pestiviruses: 314 of the goat samples were screened using reverse transcription polymerase chain reaction with primer pairs specific to common pestivirus genome regions. Overall, 1.6% (5/314) of the samples tested was positive for pestivirus. Based on the nucleotide sequence data and the phylogenetic analysis, three isolates were characterized as BVDV type 1 and two isolates as BVDV type 2. However, none of the isolates could be classified as BDV. These results indicate that BVDV-1 and BVDV-2 are the pestivirus strains circulating among Korean goat populations.
Afficher plus [+] Moins [-]Isolation of Serratia fonticola from pirarucu Arapaima gigas
2008
Choresca Jr, Casiano H. (Seoul National University, Seoul, Republic of Korea) | Kim, J.H. (Seoul National University, Seoul, Republic of Korea) | Gomez, Dennis K. (Seoul National University, Seoul, Republic of Korea) | Jang, H. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea) | Joh, S.J. (National Veterinary Research and Quarantine Service, Anyang, Republic of Korea) | Park, S.C. (Seoul National University, Seoul, Republic of Korea), E-mail: [email protected]
The pirarucu, Arapaima gigas (body weight = 18.3 kg and total length = 102 cm) which had been reared in one of the private commercial aquaria for exhibition was found dead and submitted for diagnostic examination. A pure bacterial culture was isolated from the kidney, which was enlarged, and contained fluids. Results of the bacterial identification yielded Serratia fonticola. This paper describes the first isolation of S. fonticola from pirarucu.
Afficher plus [+] Moins [-]Cerebrospinal fluid analysis in 13 clinically healthy Beagle dogs; hematological, biochemical and electrophoretic findings
2008
Kim, I.H. (Konkuk University, Seoul, Republic of Korea) | Jung, D.I. (Konkuk University, Seoul, Republic of Korea) | Yoo, J.H. (Konkuk University, Seoul, Republic of Korea) | Kang, B.T. (Konkuk University, Seoul, Republic of Korea) | Park, C. (University of California Davis, Davis, California, USA) | Park, H.M. (Konkuk University, Seoul, Republic of Korea), E-mail: [email protected]
The purpose of this study is to define the normal findings of cerebrospinal fluid (CSF) of the clinically healthy Beagle dogs and to provide basic information in diagnosis of neurologic disorders. CSF obtained from 13 clinically healthy dogs was examined for total and differential cell counts, total protein concentration, glucose and lactate dehydrogenase (LDH) concentration, specific gravity, turbidity, and protein electrophoresis. On gross examination, CSF samples evaluated were clear and colorless. Few red blood cells and nucleated cells were present. The mean concentration of glucose and LDH examined were 65.8 mg/dl and 2.7 mg/dl, respectively. The cellular components of CSF samples based on differential counts were monocytes (41.9%), activated macrophages (35.8%), lymphocytes (20.0%), neutrophils (1.65), and eosinophils (0.7%). The fractions of electrophoretic protein in CSF were albumin (52.7%), alpha-globulin (16.5%), beta-globulin (24.8%), and gamma-globulin (3.0%). Results of albumin quota were ranged from 0.15 to 0.38. In conclusion, this study provided normal composition of CSF in Beagle dogs.
Afficher plus [+] Moins [-]