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Registro Completo |
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Biblioteca(s): |
Embrapa Acre; Embrapa Amapá; Embrapa Amazônia Ocidental; Embrapa Amazônia Oriental. |
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Data corrente: |
12/12/2007 |
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Data da última atualização: |
25/11/2019 |
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Autoria: |
SILVA, J. N. M.; LOPES, J. do C. A.; OLIVEIRA, L. C. de; SILVA, S. M. A. da; CARVALHO, J. O. P. de; COSTA, D. H. M.; MELO, M. S.; TAVARES, M. J. M. |
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Afiliação: |
JOSÉ NATALINO MACEDO SILVA, CPATU; JOSE DO CARMO ALVES LOPES, CPATU; LIA CUNHA DE OLIVEIRA, UFRA; SILVIA MARIA LAVES DA SILVA, IZABEL MADEIRAS DO BRASIL; JOÃO OLEGÁRIO PEREIRA DE CARVALHO, CPATU; DULCE HELENA MARTINS COSTA, BANCO DA AMAZÔNIA; MARCELO SANTOS MELO; MARIO JOSÉ MATOS TAVARES, AMASOFT CONSULTORIA E SISTEMAS. |
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Título: |
Diretrizes para instalação e medição de parcelas permanentes em florestas naturais da Amazônia brasileira. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Belém, PA: Embrapa Amazônia Oriental, 2005. |
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Páginas: |
68 p. |
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Idioma: |
Português |
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Conteúdo: |
Área de monitoramento. Número, tamanho e forma das parcelas permanentes. Subdivisão das parcelas. Instalação das parcelas permanentes. Medição. Equipe. Sugestão de material básico para a medição de parcelas permanentes. Periodicidade das medições. Classes de tamanho. Coleta de dados. Medição de árvores. Medição de arvoretas. Medição de varas. Registro de mudas. Registro de palmeiras. Registro das fases de desenvolvimento da floresta. Uso das fichas de campo. |
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Palavras-Chave: |
Brasil; Parcela permanente. |
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Thesagro: |
Floresta; Inventário Florestal; Silvicultura. |
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Thesaurus Nal: |
Amazonia. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/205499/1/Diretrizes-para-instalacao-e-medicao-de.pdf
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Marc: |
LEADER 01276nam a2200277 a 4500
001 1954902
005 2019-11-25
008 2005 bl uuuu 00u1 u #d
100 1 $aSILVA, J. N. M.
245 $aDiretrizes para instalação e medição de parcelas permanentes em florestas naturais da Amazônia brasileira.
260 $aBelém, PA: Embrapa Amazônia Oriental$c2005
300 $a68 p.
520 $aÁrea de monitoramento. Número, tamanho e forma das parcelas permanentes. Subdivisão das parcelas. Instalação das parcelas permanentes. Medição. Equipe. Sugestão de material básico para a medição de parcelas permanentes. Periodicidade das medições. Classes de tamanho. Coleta de dados. Medição de árvores. Medição de arvoretas. Medição de varas. Registro de mudas. Registro de palmeiras. Registro das fases de desenvolvimento da floresta. Uso das fichas de campo.
650 $aAmazonia
650 $aFloresta
650 $aInventário Florestal
650 $aSilvicultura
653 $aBrasil
653 $aParcela permanente
700 1 $aLOPES, J. do C. A.
700 1 $aOLIVEIRA, L. C. de
700 1 $aSILVA, S. M. A. da
700 1 $aCARVALHO, J. O. P. de
700 1 $aCOSTA, D. H. M.
700 1 $aMELO, M. S.
700 1 $aTAVARES, M. J. M.
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Registro original: |
Embrapa Amazônia Oriental (CPATU) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sudeste. Para informações adicionais entre em contato com cppse.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
06/12/2021 |
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Data da última atualização: |
15/12/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
GONÇALVES, A. A.; GARCIA, A. R.; ROLIM FILHO, S. T.; SILVA, J. A. R. DA; MELO, D. N. DE; GUIMARÃES, T. C.; TAVARES, H. R.; SILVA, T. V. G.; SOUZA, E. B. DE; SANTOS, S. DO S. D.; OHASHI, O. M. |
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Afiliação: |
ARNALDO ALGARANHAR GONÇALVES, Federal University of Pará; ALEXANDRE ROSSETTO GARCIA, CPPSE; SEBASTIÃO TAVARES ROLIM FILHO, Federal Rural University of Amazonia; JAMILE ANDRÉA RODRIGUES DA SILVA, Federal Rural University of Amazonia; DAYANA NEVES DE MELO, Federal Rural University of Amazonia; THIAGO CASTRO GUIMARÃES, Federal University of Pará; HÉLITON RIBEIRO TAVARES, Federal University of Pará; THIAGO VELASCO GUIMARÃES SILVA, Federal University of Pará; EDUARDO BAIA DE SOUZA, Federal University of Pará; SIMONE DO SOCORRO DAMASCENO SANTOS, Federal University of Pará; OTÁVIO MITIO OHASHI, Federal University of Pará. |
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Título: |
Scrotal thermoregulation and sequential sperm abnormalities in buffalo bulls (Bubalus bubalis) under short-term heat stress. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Journal of Thermal Biology, v.96, feb. 2021, 102842. |
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Páginas: |
10 p. |
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DOI: |
https://doi.org/10.1016/j.jtherbio.2021.102842 |
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Idioma: |
Inglês |
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Conteúdo: |
Heat stress reduces the reproductive capacity of bulls raised in tropical climate. However, the reestablishment of scrotal thermoregulation and the dynamics of sperm defects emergence after stress are not completely known in buffaloes. Thus, the study aimed to evaluate the effect of short-term heat stress over scrotal thermoregulation and sperm attributes, relating them to spermatogenesis stages. Five buffalo bulls went through scrotal insulation during 48 h (from day 0 to day 2). Semen samples were collected every 7 days (from day - 7 to day 49) and progressive motility, viability, and sperm morphology. Heat stress significantly destabilized scrotal thermoregulation (P < 0.001). Scrotal temperature was from 4.2 to 6.3 C lower than the core body temperature, except on insulation days (P < 0.001), and returned to the basal condition five days after the removal of the stressing stimulus. More significant deleterious effects were observed in sperm morphology than in cell concentration, motility, and viability. The chronology of morphologic defects expression demonstrated tail defects (days 7?14), cytoplasmic droplets (days 14-28), and head defects (day 28), returning to pre-insulation condition 35 days after the thermal challenge. Thus, hyperthermia harmed more intensely spermatozoa in epididymal transit, elongated spermatids, and secondary spermatocytes. It is concluded that water buffalo bulls present a peculiar manifestation of sperm morphology after short-term stress, indicating an important difference related to the bovine species. Therefore, during the andrological evaluation of buffalo bulls, it is necessary to avoid the allometric extrapolation between these species. MenosHeat stress reduces the reproductive capacity of bulls raised in tropical climate. However, the reestablishment of scrotal thermoregulation and the dynamics of sperm defects emergence after stress are not completely known in buffaloes. Thus, the study aimed to evaluate the effect of short-term heat stress over scrotal thermoregulation and sperm attributes, relating them to spermatogenesis stages. Five buffalo bulls went through scrotal insulation during 48 h (from day 0 to day 2). Semen samples were collected every 7 days (from day - 7 to day 49) and progressive motility, viability, and sperm morphology. Heat stress significantly destabilized scrotal thermoregulation (P < 0.001). Scrotal temperature was from 4.2 to 6.3 C lower than the core body temperature, except on insulation days (P < 0.001), and returned to the basal condition five days after the removal of the stressing stimulus. More significant deleterious effects were observed in sperm morphology than in cell concentration, motility, and viability. The chronology of morphologic defects expression demonstrated tail defects (days 7?14), cytoplasmic droplets (days 14-28), and head defects (day 28), returning to pre-insulation condition 35 days after the thermal challenge. Thus, hyperthermia harmed more intensely spermatozoa in epididymal transit, elongated spermatids, and secondary spermatocytes. It is concluded that water buffalo bulls present a peculiar manifestation of sperm morphology after short-term stress, indic... Mostrar Tudo |
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Palavras-Chave: |
Sperm morphology; Spermiogram; Water buffalo. |
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Thesaurus NAL: |
Thermal stress; Thermoregulation. |
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Categoria do assunto: |
G Melhoramento Genético |
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Marc: |
LEADER 02702naa a2200325 a 4500
001 2137118
005 2021-12-15
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.jtherbio.2021.102842$2DOI
100 1 $aGONÇALVES, A. A.
245 $aScrotal thermoregulation and sequential sperm abnormalities in buffalo bulls (Bubalus bubalis) under short-term heat stress.$h[electronic resource]
260 $c2021
300 $a10 p.
520 $aHeat stress reduces the reproductive capacity of bulls raised in tropical climate. However, the reestablishment of scrotal thermoregulation and the dynamics of sperm defects emergence after stress are not completely known in buffaloes. Thus, the study aimed to evaluate the effect of short-term heat stress over scrotal thermoregulation and sperm attributes, relating them to spermatogenesis stages. Five buffalo bulls went through scrotal insulation during 48 h (from day 0 to day 2). Semen samples were collected every 7 days (from day - 7 to day 49) and progressive motility, viability, and sperm morphology. Heat stress significantly destabilized scrotal thermoregulation (P < 0.001). Scrotal temperature was from 4.2 to 6.3 C lower than the core body temperature, except on insulation days (P < 0.001), and returned to the basal condition five days after the removal of the stressing stimulus. More significant deleterious effects were observed in sperm morphology than in cell concentration, motility, and viability. The chronology of morphologic defects expression demonstrated tail defects (days 7?14), cytoplasmic droplets (days 14-28), and head defects (day 28), returning to pre-insulation condition 35 days after the thermal challenge. Thus, hyperthermia harmed more intensely spermatozoa in epididymal transit, elongated spermatids, and secondary spermatocytes. It is concluded that water buffalo bulls present a peculiar manifestation of sperm morphology after short-term stress, indicating an important difference related to the bovine species. Therefore, during the andrological evaluation of buffalo bulls, it is necessary to avoid the allometric extrapolation between these species.
650 $aThermal stress
650 $aThermoregulation
653 $aSperm morphology
653 $aSpermiogram
653 $aWater buffalo
700 1 $aGARCIA, A. R.
700 1 $aROLIM FILHO, S. T.
700 1 $aSILVA, J. A. R. DA
700 1 $aMELO, D. N. DE
700 1 $aGUIMARÃES, T. C.
700 1 $aTAVARES, H. R.
700 1 $aSILVA, T. V. G.
700 1 $aSOUZA, E. B. DE
700 1 $aSANTOS, S. DO S. D.
700 1 $aOHASHI, O. M.
773 $tJournal of Thermal Biology$gv.96, feb. 2021, 102842.
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Embrapa Pecuária Sudeste (CPPSE) |
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