Gastro-intestinal nematodes of the zebu calves on native pasture in the Pantanal Region, Brazil. I. Prevalence, intensity of infection and seasonal variation
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/16597 |
Resumo: | From May 1976 to June 1978, an epidemiological study on gastro-intestinal nematodes of the Zebu calves on native pasture, was carried out in the Pantanal region, Brazil. Haemonchus, Oesophagostomum and Cooperia were the most common genus with high prevalence. Ninety-five percent of total number of Haemonchus collected were identified as Haemonchus similis. Faecal egg counts varied greatly from season to season during the experiment period. On the whole, the counts reflected the fluctuations of worm burden. The counts, however, did not always reveal the degree of infection with gastro-intestinal parasites. It was proved that Haemonchus spp. was the most predominant in the larval identification, but Cooperia spp. was more abundant than Haemonchus in the worm burden. The relationship between the intensity of infection of the calves with the gastro-intestinal parasites and climate factors, such as temperature, precipitation and evapotranspiration, was analized. The results showed that the monthly water deficiency on the soil or its surplus had a closed correlation with the dynamic populations of the nematode parasites. |
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Gastro-intestinal nematodes of the zebu calves on native pasture in the Pantanal Region, Brazil. I. Prevalence, intensity of infection and seasonal variationNematodioses gastrintestinais em bezerros zebus no Pantanal Matogrossense I. Prevalência, intensidade de infecção e variação estacionalnematodoses; prevalence; intensity of infection; seasonal variationnematodioses; prevalência; intensidade de infecção; variação estacionalFrom May 1976 to June 1978, an epidemiological study on gastro-intestinal nematodes of the Zebu calves on native pasture, was carried out in the Pantanal region, Brazil. Haemonchus, Oesophagostomum and Cooperia were the most common genus with high prevalence. Ninety-five percent of total number of Haemonchus collected were identified as Haemonchus similis. Faecal egg counts varied greatly from season to season during the experiment period. On the whole, the counts reflected the fluctuations of worm burden. The counts, however, did not always reveal the degree of infection with gastro-intestinal parasites. It was proved that Haemonchus spp. was the most predominant in the larval identification, but Cooperia spp. was more abundant than Haemonchus in the worm burden. The relationship between the intensity of infection of the calves with the gastro-intestinal parasites and climate factors, such as temperature, precipitation and evapotranspiration, was analized. The results showed that the monthly water deficiency on the soil or its surplus had a closed correlation with the dynamic populations of the nematode parasites.Durante dois anos, de maio de 1976 a junho de 1978, foram realizados estudos epidemiológicos sobre as nematodioses gastrintestinais em bezerros zebus, mantidos em pastagens nativas, na região do Pantanal Matogrossense. Os gêneros Haemonchus, Oesophagostomum e Cooperia apresentaram as taxas de prevalências e as intensidades de infecções mais altas. Do total de exemplares do gênero Haemonchus recuperados, 95% foram identificados como Haemonchus similis. De modo geral, o número de ovos por grama de fezes (O.P.G.) revelou a variação na população de vermes adultos, mas falhou para avaliar o nível de infecção. Nas coproculturas, as larvas infectantes de Haemonchus spp. foram predominantes, enquanto que, no total de vermes adultos recuperados, Cooperia spp. foi o gênero mais abundante. O estudo da relação entre a intensidade de infecção e os fatores climáticos (temperatura, precipitação e evapotranspiração) revelou que o excesso e deficiência de água no solo teve uma forte relação com a população de vermes adultos.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraCatto, João BatistaUeno, Hakaru2014-04-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/16597Pesquisa Agropecuaria Brasileira; v.16, n.1, jan. 1981; 129-140Pesquisa Agropecuária Brasileira; v.16, n.1, jan. 1981; 129-1401678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/16597/10884info:eu-repo/semantics/openAccess2014-04-15T19:35:55Zoai:ojs.seer.sct.embrapa.br:article/16597Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-15T19:35:55Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Gastro-intestinal nematodes of the zebu calves on native pasture in the Pantanal Region, Brazil. I. Prevalence, intensity of infection and seasonal variation Nematodioses gastrintestinais em bezerros zebus no Pantanal Matogrossense I. Prevalência, intensidade de infecção e variação estacional |
title |
Gastro-intestinal nematodes of the zebu calves on native pasture in the Pantanal Region, Brazil. I. Prevalence, intensity of infection and seasonal variation |
spellingShingle |
Gastro-intestinal nematodes of the zebu calves on native pasture in the Pantanal Region, Brazil. I. Prevalence, intensity of infection and seasonal variation Catto, João Batista nematodoses; prevalence; intensity of infection; seasonal variation nematodioses; prevalência; intensidade de infecção; variação estacional |
title_short |
Gastro-intestinal nematodes of the zebu calves on native pasture in the Pantanal Region, Brazil. I. Prevalence, intensity of infection and seasonal variation |
title_full |
Gastro-intestinal nematodes of the zebu calves on native pasture in the Pantanal Region, Brazil. I. Prevalence, intensity of infection and seasonal variation |
title_fullStr |
Gastro-intestinal nematodes of the zebu calves on native pasture in the Pantanal Region, Brazil. I. Prevalence, intensity of infection and seasonal variation |
title_full_unstemmed |
Gastro-intestinal nematodes of the zebu calves on native pasture in the Pantanal Region, Brazil. I. Prevalence, intensity of infection and seasonal variation |
title_sort |
Gastro-intestinal nematodes of the zebu calves on native pasture in the Pantanal Region, Brazil. I. Prevalence, intensity of infection and seasonal variation |
author |
Catto, João Batista |
author_facet |
Catto, João Batista Ueno, Hakaru |
author_role |
author |
author2 |
Ueno, Hakaru |
author2_role |
author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Catto, João Batista Ueno, Hakaru |
dc.subject.por.fl_str_mv |
nematodoses; prevalence; intensity of infection; seasonal variation nematodioses; prevalência; intensidade de infecção; variação estacional |
topic |
nematodoses; prevalence; intensity of infection; seasonal variation nematodioses; prevalência; intensidade de infecção; variação estacional |
description |
From May 1976 to June 1978, an epidemiological study on gastro-intestinal nematodes of the Zebu calves on native pasture, was carried out in the Pantanal region, Brazil. Haemonchus, Oesophagostomum and Cooperia were the most common genus with high prevalence. Ninety-five percent of total number of Haemonchus collected were identified as Haemonchus similis. Faecal egg counts varied greatly from season to season during the experiment period. On the whole, the counts reflected the fluctuations of worm burden. The counts, however, did not always reveal the degree of infection with gastro-intestinal parasites. It was proved that Haemonchus spp. was the most predominant in the larval identification, but Cooperia spp. was more abundant than Haemonchus in the worm burden. The relationship between the intensity of infection of the calves with the gastro-intestinal parasites and climate factors, such as temperature, precipitation and evapotranspiration, was analized. The results showed that the monthly water deficiency on the soil or its surplus had a closed correlation with the dynamic populations of the nematode parasites. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-15 |
dc.type.none.fl_str_mv |
|
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/16597 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/16597 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/16597/10884 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.16, n.1, jan. 1981; 129-140 Pesquisa Agropecuária Brasileira; v.16, n.1, jan. 1981; 129-140 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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1793416685375455232 |