| |
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Gado de Leite. |
|
Data corrente: |
17/06/2013 |
|
Data da última atualização: |
09/02/2024 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
PINNA, A.; MARTINS, G.; SOUZA, G. N. de; LILENBAUM, W. |
|
Afiliação: |
A. PINNA, UFF; G. MARTINS, UFF; GUILHERME NUNES DE SOUZA, CNPGL; W. LILENBAUM, UFF. |
|
Título: |
Influence of Seroreactivity to Leptospira and reproductive failures in recipient mares of equine embryo transfer programmes. |
|
Ano de publicação: |
2013 |
|
Fonte/Imprenta: |
Reproduction in Domestic Animals, v. 48, n. 4, e55-e57, 2013. |
|
DOI: |
https://doi.org/10.1111/rda.12166 |
|
Idioma: |
Inglês |
|
Notas: |
Disponível em: <http://onlinelibrary.wiley.com/doi/10.1111/rda.12166/pdf> |
|
Conteúdo: |
The aim of this study was to demonstrate that seroreactivity against Leptospira is significantly associated to the reproductive efficiency of recipient mares of an embryo transfer (ET) programme. A serosurvey was conducted from August 2007 to March 2009 in five herds from Rio de Janeiro, Brazil, with high rates of reproductive failure, as early embryonic death (>12%), abortion (>12%) and perinatal death. Detailed information about the losses was obtained from practitioner. A total of 338 recipient mares were tested by microscopic agglutination test, and 226 (66.9%) were seroreactive, mainly against serovars Bratislava and Copenhageni. Seroreactivity could be associated to reproductive failure (p < 0.001), and it was demonstrated that a seroreactive mare is 1.8 times more likely (relative risk - RR) to present reproductive failure than a seronegative one, particularly in relation to early embryonic death (p < 0.0001; RR 8.4) but also to abortions (p < 0.0001; RR 3.5), and to perinatal death (p < 0.05; RR 7.3). Therefore, seroreactivity to Leptospira is associated to reproductive failure in all phases of pregnancy in recipient mares, impairing equine ET programmes. |
|
Palavras-Chave: |
Parametros reprodutivos; Sorologia. |
|
Thesagro: |
Estatística. |
|
Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
|
Marc: |
null
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Gado de Leite (CNPGL) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
| Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
|
Data corrente: |
23/01/2017 |
|
Data da última atualização: |
23/01/2017 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 2 |
|
Autoria: |
CALVI, G. P.; AUD, F. F.; FERRAZ, I. D. K.; PRITCHARD, H. W.; KRANNER, I. |
|
Afiliação: |
G. P. CALVI, INPA; FABIANA FERRAZ AUD, CNPMF; I. D. K. FERRAZ, INPA; H. W. PRITCHARD, Royal Botanic Gardens; I. KRANNER, Royal Botanic Gardens. |
|
Título: |
Analyses of several seed viability markers in individual recalcitrant seeds of Eugenia stipitata McVaugh with totipotent germination. |
|
Ano de publicação: |
2017 |
|
Fonte/Imprenta: |
Plant Biology, n. 19, p. 6-13, German Botanical Society; d The Royal Botanical Society of the Netherlands, 2017. |
|
ISSN: |
1435-8603 |
|
Idioma: |
Inglês |
|
Conteúdo: |
The use of biochemical seed viability markers is often compromised by the unknown partitioning of analytes in bulk seed lots consisting of inseparable populations of viable and nonviable seeds. We took advantage of an unusual morphological syndrome found in the recalcitrant, undifferentiated seeds of Eugenia stipitata: one seed can be cut into several parts, each of which can germinate and develop into seedlings. We used four seed parts from one individual seed to analyse seed moisture content (MC), seed viability and the antioxidant glutathione (c-glutamyl-cysteinyl-glycine; GSH), glutathione disulphide (GSSG) and intermediates of glutathione synthesis and breakdown. Seeds were exposed to different environmental MC to induce various levels of desiccation stress. Upon storage at high seed MC, seed viability was maintained, while GSH concentration increased and the glutathione half-cell reduction potential (EGSSG/2GSH) was less negative than 215 mV, indicating GSH production and highly reducing conditions. Storage at low seed MC led to loss of GSH, resulting in a shift in EGSSG/2GSH, and seed death. In contrast, the cyst(e)ine half-cell reduction potential (ECySS/2CYS) could not distinguish between the viability categories. Previous studies on seed populations revealed that the probability for a seed being alive is 50% at EGSSG/2GSH values between 180 and 160 mV. The single seed approach revealed that the window in which seed viability was lost could be slightly shifted towards more negative values. We discuss the contribution of cellular pH to EGSSG/2GSH and recommend E. stipitata as a recalcitrant seed model to study stress response on a single seed basis. MenosThe use of biochemical seed viability markers is often compromised by the unknown partitioning of analytes in bulk seed lots consisting of inseparable populations of viable and nonviable seeds. We took advantage of an unusual morphological syndrome found in the recalcitrant, undifferentiated seeds of Eugenia stipitata: one seed can be cut into several parts, each of which can germinate and develop into seedlings. We used four seed parts from one individual seed to analyse seed moisture content (MC), seed viability and the antioxidant glutathione (c-glutamyl-cysteinyl-glycine; GSH), glutathione disulphide (GSSG) and intermediates of glutathione synthesis and breakdown. Seeds were exposed to different environmental MC to induce various levels of desiccation stress. Upon storage at high seed MC, seed viability was maintained, while GSH concentration increased and the glutathione half-cell reduction potential (EGSSG/2GSH) was less negative than 215 mV, indicating GSH production and highly reducing conditions. Storage at low seed MC led to loss of GSH, resulting in a shift in EGSSG/2GSH, and seed death. In contrast, the cyst(e)ine half-cell reduction potential (ECySS/2CYS) could not distinguish between the viability categories. Previous studies on seed populations revealed that the probability for a seed being alive is 50% at EGSSG/2GSH values between 180 and 160 mV. The single seed approach revealed that the window in which seed viability was lost could be slightly shifted towar... Mostrar Tudo |
|
Thesagro: |
Semente. |
|
Categoria do assunto: |
-- |
|
Marc: |
null
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
