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Registro Completo |
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Biblioteca(s): |
Embrapa Agrossilvipastoril. |
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Data corrente: |
04/08/2022 |
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Data da última atualização: |
04/08/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LOPES, L. B.; KAMCHEN, S. G.; GOMES, F. J.; NATIVIDADE, U. A.; MAGALHÃES, L. M. D.; PIMENTA, A. de P.; ARAUJO, R. N. |
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Afiliação: |
LUCIANO BASTOS LOPES, CPAMT; SCHEILA GEIELE KAMCHEN, UFMT, Sinop-MT; FAGNER JÚNIOR GOMES, USP-ESALQ, Piracicaba-SP; ULISSES ANTÔNIO NATIVIDADE, UFMG, Belo Horizonte-MG; LUISA MOURÃO DIAS MAGALHÃES, UFMG, Belo Horizonte-MG; ANGELITA DE PAULA PIMENTA, UFMG, Belo Horizonte-MG; RICARDO NASCIMENTO ARAUJO, UFMG, Belo Horizonte-MG. |
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Título: |
Influence of silvopastoral systems on gastrointestinal nematode infection and immune response of Nellore heifers under tropical conditions. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Veterinary Parasitology, v. 309, 109765, 2022. |
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ISSN: |
0304-4017 |
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DOI: |
https://doi.org/10.1016/j.vetpar.2022.109765 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Among the strategies for integrating crops, livestock, and forestry, silvopastoral systems must be highlighted due to their inherent microclimatic conditions, mainly in tropical countries such as Brazil, where cattle are frequently subjected to unfavorable thermal conditions. However, according to some studies, shading can potentially worsen herds´ parasitism due to better microclimatic condition for the parasites. This study aimed to assess fecal egg count in Nellore heifers reared in two silvopastoral arrangements (pasture with single or triple tree rows), in a crop-livestock system, and open pasture. In the silvopastoral treatment composed of triple rows, lesser parasite burden means were found, with a peak infection in February/March and another in October. Regarding the effect of seasons over the year, there was an environmental influence on the egg counts, with higher averages during the late rainy season and the beginning of the dry season. An immunological investigation of animals from each group showed that cattle kept on the silvopastoral arrangements with either single or triple rows have significantly higher lymphocyte proliferation when stimulated with specific antigens than those kept on open pastures. Based on our results, it can be concluded that both silvopastoral systems were not considered as a risk factor for nematode egg counts in Nellore heifers. Indeed, the shadiest system promoted milder parasitism and higher immunological lymphocyte responses in animals. MenosAbstract: Among the strategies for integrating crops, livestock, and forestry, silvopastoral systems must be highlighted due to their inherent microclimatic conditions, mainly in tropical countries such as Brazil, where cattle are frequently subjected to unfavorable thermal conditions. However, according to some studies, shading can potentially worsen herds´ parasitism due to better microclimatic condition for the parasites. This study aimed to assess fecal egg count in Nellore heifers reared in two silvopastoral arrangements (pasture with single or triple tree rows), in a crop-livestock system, and open pasture. In the silvopastoral treatment composed of triple rows, lesser parasite burden means were found, with a peak infection in February/March and another in October. Regarding the effect of seasons over the year, there was an environmental influence on the egg counts, with higher averages during the late rainy season and the beginning of the dry season. An immunological investigation of animals from each group showed that cattle kept on the silvopastoral arrangements with either single or triple rows have significantly higher lymphocyte proliferation when stimulated with specific antigens than those kept on open pastures. Based on our results, it can be concluded that both silvopastoral systems were not considered as a risk factor for nematode egg counts in Nellore heifers. Indeed, the shadiest system promoted milder parasitism and higher immunological lymphocyte respons... Mostrar Tudo |
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Palavras-Chave: |
Sinop-MT. |
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Thesagro: |
Agrossilvicultura; Gado; Gado Nelore. |
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Thesaurus Nal: |
Eucalyptus; Fecal egg count; Helminths; Livestock; Nellore; Silvopastoral systems. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1145230/1/2022-cpamt-lbl-influence-silvopastoral-systems-gastrointestinal-nematoide-infection-immune-response-nellore-heifers-under-tropical-conditions.pdf
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Marc: |
LEADER 02513naa a2200337 a 4500
001 2145230
005 2022-08-04
008 2022 bl uuuu u00u1 u #d
022 $a0304-4017
024 7 $ahttps://doi.org/10.1016/j.vetpar.2022.109765$2DOI
100 1 $aLOPES, L. B.
245 $aInfluence of silvopastoral systems on gastrointestinal nematode infection and immune response of Nellore heifers under tropical conditions.$h[electronic resource]
260 $c2022
520 $aAbstract: Among the strategies for integrating crops, livestock, and forestry, silvopastoral systems must be highlighted due to their inherent microclimatic conditions, mainly in tropical countries such as Brazil, where cattle are frequently subjected to unfavorable thermal conditions. However, according to some studies, shading can potentially worsen herds´ parasitism due to better microclimatic condition for the parasites. This study aimed to assess fecal egg count in Nellore heifers reared in two silvopastoral arrangements (pasture with single or triple tree rows), in a crop-livestock system, and open pasture. In the silvopastoral treatment composed of triple rows, lesser parasite burden means were found, with a peak infection in February/March and another in October. Regarding the effect of seasons over the year, there was an environmental influence on the egg counts, with higher averages during the late rainy season and the beginning of the dry season. An immunological investigation of animals from each group showed that cattle kept on the silvopastoral arrangements with either single or triple rows have significantly higher lymphocyte proliferation when stimulated with specific antigens than those kept on open pastures. Based on our results, it can be concluded that both silvopastoral systems were not considered as a risk factor for nematode egg counts in Nellore heifers. Indeed, the shadiest system promoted milder parasitism and higher immunological lymphocyte responses in animals.
650 $aEucalyptus
650 $aFecal egg count
650 $aHelminths
650 $aLivestock
650 $aNellore
650 $aSilvopastoral systems
650 $aAgrossilvicultura
650 $aGado
650 $aGado Nelore
653 $aSinop-MT
700 1 $aKAMCHEN, S. G.
700 1 $aGOMES, F. J.
700 1 $aNATIVIDADE, U. A.
700 1 $aMAGALHÃES, L. M. D.
700 1 $aPIMENTA, A. de P.
700 1 $aARAUJO, R. N.
773 $tVeterinary Parasitology$gv. 309, 109765, 2022.
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Registro original: |
Embrapa Agrossilvipastoril (CPAMT) |
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Origem |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
07/11/2014 |
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Data da última atualização: |
23/05/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
RODRIGUES, T. B.; KHAJURIA, C.; WANG, H.; MATZ, N.; CARDOSO, D. C.; VALICENTE, F. H.; ZHOU, X.; SIEGFRIED, B. |
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Afiliação: |
FERNANDO HERCOS VALICENTE, CNPMS. |
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Título: |
Validation of reference housekeeping genes for gene expression studies in western corn rootworm (Diabrotica virgifera virgifera). |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Plos One, San Francisco,v. 9, n. 10, p. 1-8, Oct. 2014. |
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DOI: |
10.1371/journal.pone.0109825 |
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Idioma: |
Inglês |
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Conteúdo: |
Quantitative Real-time PCR (qRT-PCR) is a powerful technique to investigate comparative gene expression. In general, normalization of results using a highly stable housekeeping gene (HKG) as an internal control is recommended and necessary. However, there are several reports suggesting that regulation of some HKGs is affected by different conditions. The western corn rootworm (WCR), Diabrotica virgifera virgifera LeConte (Coleoptera: Chrysomelidae), is a serious pest of corn in the United States and Europe. The expression profile of target genes related to insecticide exposure, resistance, and RNA interference has become an important experimental technique for study of western corn rootworms; however, lack of information on reliable HKGs under different conditions makes the interpretation of qRT-PCR results difficult. In this study, four distinct algorithms (Genorm, NormFinder, BestKeeper and delta-CT) and five candidate HKGs to genes of reference (b-actin; GAPDH, glyceraldehyde 3-phosphate dehydrogenase; b-tubulin; RPS9, ribosomal protein S9; EF1a, elongation factor-1a) were evaluated to determine the most reliable HKG under different experimental conditions including exposure to dsRNA and Bt toxins and among different tissues and developmental stages. Although all the HKGs tested exhibited relatively stable expression among the different treatments, some differences were noted. Among the five candidate reference genes evaluated, b-actin exhibited highly stable expression among different life stages. RPS9 exhibited the most similar pattern of expression among dsRNA treatments, and both experiments indicated that EF1a was the second most stable gene. EF1a was also the most stable for Bt exposure and among different tissues. These results will enable researchers to use more accurate and reliable normalization of qRT-PCR data in WCR experiments. MenosQuantitative Real-time PCR (qRT-PCR) is a powerful technique to investigate comparative gene expression. In general, normalization of results using a highly stable housekeeping gene (HKG) as an internal control is recommended and necessary. However, there are several reports suggesting that regulation of some HKGs is affected by different conditions. The western corn rootworm (WCR), Diabrotica virgifera virgifera LeConte (Coleoptera: Chrysomelidae), is a serious pest of corn in the United States and Europe. The expression profile of target genes related to insecticide exposure, resistance, and RNA interference has become an important experimental technique for study of western corn rootworms; however, lack of information on reliable HKGs under different conditions makes the interpretation of qRT-PCR results difficult. In this study, four distinct algorithms (Genorm, NormFinder, BestKeeper and delta-CT) and five candidate HKGs to genes of reference (b-actin; GAPDH, glyceraldehyde 3-phosphate dehydrogenase; b-tubulin; RPS9, ribosomal protein S9; EF1a, elongation factor-1a) were evaluated to determine the most reliable HKG under different experimental conditions including exposure to dsRNA and Bt toxins and among different tissues and developmental stages. Although all the HKGs tested exhibited relatively stable expression among the different treatments, some differences were noted. Among the five candidate reference genes evaluated, b-actin exhibited highly stable expression a... Mostrar Tudo |
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Thesagro: |
Gene; Genética; Lagarta; Praga de planta. |
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Thesaurus NAL: |
Plant pests. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/111142/1/Validation-reference.pdf
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Marc: |
LEADER 02688naa a2200277 a 4500
001 1999434
005 2017-05-23
008 2014 bl uuuu u00u1 u #d
024 7 $a10.1371/journal.pone.0109825$2DOI
100 1 $aRODRIGUES, T. B.
245 $aValidation of reference housekeeping genes for gene expression studies in western corn rootworm (Diabrotica virgifera virgifera).$h[electronic resource]
260 $c2014
520 $aQuantitative Real-time PCR (qRT-PCR) is a powerful technique to investigate comparative gene expression. In general, normalization of results using a highly stable housekeeping gene (HKG) as an internal control is recommended and necessary. However, there are several reports suggesting that regulation of some HKGs is affected by different conditions. The western corn rootworm (WCR), Diabrotica virgifera virgifera LeConte (Coleoptera: Chrysomelidae), is a serious pest of corn in the United States and Europe. The expression profile of target genes related to insecticide exposure, resistance, and RNA interference has become an important experimental technique for study of western corn rootworms; however, lack of information on reliable HKGs under different conditions makes the interpretation of qRT-PCR results difficult. In this study, four distinct algorithms (Genorm, NormFinder, BestKeeper and delta-CT) and five candidate HKGs to genes of reference (b-actin; GAPDH, glyceraldehyde 3-phosphate dehydrogenase; b-tubulin; RPS9, ribosomal protein S9; EF1a, elongation factor-1a) were evaluated to determine the most reliable HKG under different experimental conditions including exposure to dsRNA and Bt toxins and among different tissues and developmental stages. Although all the HKGs tested exhibited relatively stable expression among the different treatments, some differences were noted. Among the five candidate reference genes evaluated, b-actin exhibited highly stable expression among different life stages. RPS9 exhibited the most similar pattern of expression among dsRNA treatments, and both experiments indicated that EF1a was the second most stable gene. EF1a was also the most stable for Bt exposure and among different tissues. These results will enable researchers to use more accurate and reliable normalization of qRT-PCR data in WCR experiments.
650 $aPlant pests
650 $aGene
650 $aGenética
650 $aLagarta
650 $aPraga de planta
700 1 $aKHAJURIA, C.
700 1 $aWANG, H.
700 1 $aMATZ, N.
700 1 $aCARDOSO, D. C.
700 1 $aVALICENTE, F. H.
700 1 $aZHOU, X.
700 1 $aSIEGFRIED, B.
773 $tPlos One, San Francisco,v. 9$gn. 10, p. 1-8, Oct. 2014.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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