Monitoração da leucose enzoótica bovina no gado leiteiro da região de Pitangueiras (SP)

Anticorpos précipitantes contra o antígeno gp51 do vírus da Leucose Enzoótica Bovina foram pesquisados em amostras de soros de vacas leiteiras da região do município de Pitangueiras, no Estado de São Paulo. As amostras sanguíneas eram de animais provenientes de sete propriedades rurais que foram acompanhadas anualmente de 1992 até 1995. Durante o ano de 1992 foram analisados 140 soros, dos quais 24 (17,1%) eram reagentes positivos, 21 (15,0%) suspeitos e 95 (67,9%)negativos. Em 1993, dos 122 soros testados, 25 (20,5%) foram positivos, 8 (6,6%) suspeitos e 89 (72,9%) negativos. No ano de 1994 foram testadas 135 amostras, das quais 45 (33,3%) eram positivas, 19 (14,1%) suspeitas e 71 (52,6%) negativas. Finalmente, em 1995, foram analisadas as amostras de 119 animais sendo que 60 (50,4%) eram positivas, 11 (9,2%) suspeitas e 48 (40,4%) negativas. Os resultados obtidos evidenciam que no decorrer do experimento houve um nítidoaumento na prevalência da Leucose Enzoótica Bovina com o passar do tempo. Sob o prisma da Defesa Sanitária Animal, a crescente disseminação da doença na população estudada serve como alerta sobre o comportamento epidemiológico e sobre a evolução na difusão da enfermidade em nosso meio.Serum samples of dairy cows from the region of the municipality of Pitangueiras, State of São Paulo, were investigated for the possible presence of precipitating antibodies against the gp51 antigen of Enzootic Bovine Leukosis. Blood samples were obtained from animals belonging to seven rural properties which were followed up on a yearly basis, from 1992 to 1995. A total of 140 serum samples were analyzed in 1992. Of these, 24 (17.1%) reacted positively, 21 (15.0%) were suspect and 95(67.9%) were negative. In 1993, of the 122 samples tested 25 (20.5%) were positive, 8 (6.6%) were suspect and 89 (72.9%) were negative. In 1994, of the 135 samples tested, 45 (33.3%) were positive, 19 (14.1%) were suspect and 71 (52.6%) were negative. Finally, 119 samples of serum were investigated in 1995, 60 of which (50.4%) were positive, 11 (9.2%) were suspect and 48 (40.4%) were negative.These results demonstrate that a sharp increase in the prevalence of Enzootic Bovine Leukosis occurred during the experiment. From the viewpoint of Animal Sanitary Defense, the growing dissemination of the disease in the studied population serves as a warning about the epidemiologic behavior and about the evolution of the diffusion of the disease in Brazil

Natural infections with filarioidea nematodes in Hydrochaerus hydrochaeris in the floodplain of Mato Grosso do Sul, Brazil

Foram coletados 570 nematódeos Filaroidea de 36 capivaras, sacrificadas entre 1989 e 1996, onze jovens menores que seis meses e 25 adultas, provenientes da região do pantanal do Mato Grosso do Sul (Paiaguás). Cento e setenta e seis (176) espécimes de Yatesia hydrochoerus foram encontrados nas fáscias dos músculos esqueléticos, principalmente da região do obliquus externus abdominis e na face interna dos membros posteriores e trezentos e noventa e quatro (394) espécimes de Cruorifilaria tuberocauda foram coletados das artérias renais (380) e das artérias pulmonares (14) dos animais.From 36 capybaras, slaughtered between 1989 and 1996, 11 young, less than 6 months old, and 25 adults, in the floodplain region of Mato Grosso do Sul, 570 Filarioidea nematodes were collected. Three hundred and ninety-four specimen of Cruorifilaria tuberocauda were collected from the renal arteries (380) and from pulmonary arteries (14) and 176 specimen of Yatesia hydrochoerus from the fasciae of skeleptical muscles, mainly from the obliquus externus abdominis region and from the internal faces of hind limbs

Natural infection of gastrointestinal nematodes in long-nosed armadillos Dasypus novemcinctus Linnaeus, 1758 from Pantanal wetlands, Aquidauana sub-region, Mato Grosso do Sul State, with the description of Hadrostrongylus speciosum n. gen. et n. sp (Molineidae : Anoplostrongylinae)

This study evaluated the gastrointestinal helminth fauna of long-nosed armadillos, Dasypus novemcinctus, from the Pantanal wetlands, Aquidauana sub-region, Aquidauana County, Mato Grosso do Sul State, Brazil. Thirteen species of nematodes, comprising seven genera and four families, were recovered from their gastrointestinal tracts. The following descriptors of infection were determined: prevalence, variation of intensity, average intensity and abundance. Hadrostrongylus speciosum n. gen. et n. sp. is first described here. (c) 2006 Published by Elsevier B.V

Gastrintestinal helminths of capybara (Hydrochoerus hydrochaeris) from the Paiaguás subregion, in the floodplain of “Mato Grosso do Sul”, Brazil/ <br> Helmintos gastrintestinais de capivaras (Hydrochoerus hydrochaeris) na sub-região de Paiaguás, Pantanal do Mato Grosso do Sul, Brasil

Six nematode, three cestode and five trematode species were identified in 30 capybara specimens (Hydrochoerus hydrochaeris hydrochaeris L., 1766). The species of greater prevalence were: Protozoophaga obesa (96.66%), Viannella hydrochoeri (93.33%), Hydrochoerisnema anomalobursata (90.0%), F.I. P. obesa (80.0%), Taxorchis schistocotyle (76.66%), Hippocrepis hippocrepis (70.0%), Capillaria hydrochoeri (63.33%), F.I. (Viannella + Hydrochoerisnema) (60.0%), Strongyloides chapini (56.66%), Monoecocestus macrobursatum (56.66%), F.I. Monoecocestus (46.66%), M. hydrochoeri (23.33%) and M. hagmani (23.33%). On the other hand, Trichostrongylus axei, Neocotyle neocotyle, Nudacotyle valdevaginatus and N. tertius occurred at lower levels. The total of helminths identified in the 30 animals was of 236,097 being verified 110 (0.05%) specimens in the stomach, 49,240 (20.85%) in the small intestines, 186,747 (79.10%) in the large intestines. The higher intensity variation were obtained by P. obesa, F.I. P. obesa, F.I. (Viannella + Hydrochoerisnema); V. hydrochoeri, S. chapini e N. valdevaginatus, with a mean of 3,900.0 (04-20,885), 2,958.1 (40-18,130), 689.7 (05-7,515), 601.5 (10-4,585), 765.3 (05-4,055) and 1,270.0 (0-1,270) worms per animal, respectively. V. hydrochoeri and S. chapini are the most pathogenic species, with clinical and subclinical parasitosis in capybara.<p><p>Em trinta espécimes de capivaras (Hydrochoerus hydrochaeris hydrochaeris L., 1766) foram identificadas seis espécies de nematódeos, três de cestódeos e cinco de trematódeos. As espécies de maior prevalência foram: Protozoophaga obesa (96,66%), Viannella hydrochoeri (93,33%), Hydrochoerisnema anomalobursata (90,0%), F.I. P. obesa (80,0%), Taxorchis schistocotyle (76,66%), Hippocrepis hippocrepis (70,0%), Capillaria hydrochoeri (63,33%), F.I. (Viannella + Hydrochoerisnema) (60,0%), Strongyloides chapini (56,66%), Monoecocestus macrobursatum (56,66%), F.I. Monoecocestus (46,66%), M. hydrochoeri (23,33%) e M. hagmanni (23,33%). Por outro lado, Trichostrongylus axei, Neocotyle neocotyle, Nudacotyle valdevaginatus e N. tertius ocorreram em níveis mais baixos. O total de helmintos identificados nas trinta capivaras foi de 236.097, sendo constatado 110 (0,05%) exemplares nos estômagos, 49.240 (20,85%) nos intestinos delgados e, 186.747 (79,10%) nos intestinos grossos. As maiores variações de intensidade foram obtidas por P. obesa, F.I. P. obesa, F.I. (Viannella + Hydrochoerisnema); V. hydrochoeri, S. chapini e N. valdevaginatus com média de 3.900,0 (04-20885), 2.958,1 (40-18130), 689,7 (05-7515), 601,5 (10-4585), 765,3 (05-4055) e 1.270,0 (0-1270) helmintos por animal, respectivamente. V. hydrochoeri e S. chapini são as espécies mais patogênicas, com parasitoses clínicas e subclínicas em capivaras

Dioctophyme renale: prevalence and risk factors of parasitism in dogs of São Cristóvão district, Três Barras county, Santa Catarina State, Brazil

Abstract Dioctophyme renale is a nematode that can be found parasitizing the kidney, peritoneal cavity and, rarely, other organs of canids and mustelids. This disease has high occurrence in the municipality of Três Barras, state of Santa Catarina, thus making this an interesting area to study the epidemiological aspects of infection by D. renale in dogs. Among 197 dogs, 14.2% showed the parasite eggs in urine and 16.4% showed IgG antibodies anti-D. renale in serum samples according to the indirect ELISA method; among seropositive dogs, 15 (37.5%) animals did not show any parasite eggs in their urine. Parasitism was more frequent in females, and there was no finding of interference from age on parasitism. Factors such as water potential and presence of paratenic hosts in the studied region were reported by the owners of dogs and may have contributed to the occurrence of parasitism

Improvement of an enzyme immunosorbent assay for detecting antibodies against Dioctophyma renale

An available enzyme-linked immunosorbent assay (ELISA) was studied for the detection of anti-Dioctophyma renale antibodies in the sera of dogs using, detection of parasite eggs in urine sediment as a reference test. ELISA uses a soluble antigenic preparation of esophagus of D. renale and the optimal dilutions of the antigen, serum and conjugate were determined by means of checker board titration, using positive (n=13) and negative (n=27) reference serum. The specificity and sensitivity of the ELISA were 93.8% and 92.3% respectively and the kappa index was good (0.76). These results suggest that ELISA described may prove to be an effective serological test for detecting dogs infected and exposed to this parasite mainly dogs that are not eliminating parasite eggs through their urine

Natural infections with filarioidea nematodes in Hydrochaerus hydrochaeris in the floodplain of Mato Grosso do Sul, Brazil

Foram coletados 570 nematódeos Filaroidea de 36 capivaras, sacrificadas entre 1989 e 1996, onze jovens menores que seis meses e 25 adultas, provenientes da região do pantanal do Mato Grosso do Sul (Paiaguás). Cento e setenta e seis (176) espécimes de Yatesia hydrochoerus foram encontrados nas fáscias dos músculos esqueléticos, principalmente da região do obliquus externus abdominis e na face interna dos membros posteriores e trezentos e noventa e quatro (394) espécimes de Cruorifilaria tuberocauda foram coletados das artérias renais (380) e das artérias pulmonares (14) dos animais