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Registro Completo |
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Biblioteca(s): |
Embrapa Rondônia. |
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Data corrente: |
18/09/2018 |
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Data da última atualização: |
18/09/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PFEIFER, L. F. M.; ANDRADE, J. de S.; MOREIRA, E. M.; SILVA, R. R. da; NEVES, P. M. A.; SILVA, G. M. da S.; LEMOS, I. C.; SCHNEIDER, A. |
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Afiliação: |
LUIZ FRANCISCO MACHADO PFEIFER, CPAF-RO; Jéssica de Souza Andrade, Bionorte, Programa de Pós-Graduação em Biodiversidade e Biotecnologia; Elizângela Mírian Moreira; RENATA REIS DA SILVA, CPAF-RO; Paulo Marcos Araújo Neves, UNIR; George Moreira da Silva, UNIR; Izabela Cristina Lemos, UNIR; Augusto Schneider, UFPel. |
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Título: |
Uterine inflammation and fertility of beef cows subjected to timed AI at different days postpartum. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Animal Reproduction Science, v. 197, p. 268-277, 2018. |
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DOI: |
https://doi.org/10.1016/j.anireprosci.2018.08.039 |
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Idioma: |
Inglês |
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Conteúdo: |
The aim of this study was to evaluate the uterine health and fertility of postpartum beef cows subjected to timed AI (TAI) protocols at different days from calving. Lactating Nelore cows (Bos indicus; n = 244) were used in this study. The TAI protocols were initiated between 20 and 60 days postpartum (DPP). Cows were subjected to an estradiol-progesterone based TAI protocol. The cows were divided into three groups according to the days postpartum at the time the hormonal treatment was initiated: 1) Early (n = 64), cows between 20 and 30 DPP; 2) Middle (n = 115), cows between 31 and 45 DPP; and 3) Late (n = 65), cows between 46 and 60 DPP. At Day 0 of the protocol, endometrial cytobrush samples were collected. Slides for polymorphonuclear (PMN) cell counting were prepared and cytobrush was used for RNA extraction and analysis of relative abundance of il1, il6, il8, and tnf mRNA. Cows from the Early group had less (P < 0.05) pregnancies per AI (P/AI) than cows from Middle and Late groups; 29.7% (19/64), 45.2% (52/115), and 52.31% (34/65), respectively. Accordingly, the Early group had a greater (P < 0.05) proportion of PMN cells in the uterus than Middle and Late groups; 9.0%, 3.8%, and 2.2%, respectively. Relative abundances of il1 and il8 mRNA were greater (P < 0.05) in the Early group than Middle and Late groups. These results indicate that beef cows subjected to TAI protocols early postpartum (< 30 DPP) are less likely to become pregnant, which is associated with increased inflammation and relative abundance of mRNA for the proinflammatory cytokines il1 and il8. MenosThe aim of this study was to evaluate the uterine health and fertility of postpartum beef cows subjected to timed AI (TAI) protocols at different days from calving. Lactating Nelore cows (Bos indicus; n = 244) were used in this study. The TAI protocols were initiated between 20 and 60 days postpartum (DPP). Cows were subjected to an estradiol-progesterone based TAI protocol. The cows were divided into three groups according to the days postpartum at the time the hormonal treatment was initiated: 1) Early (n = 64), cows between 20 and 30 DPP; 2) Middle (n = 115), cows between 31 and 45 DPP; and 3) Late (n = 65), cows between 46 and 60 DPP. At Day 0 of the protocol, endometrial cytobrush samples were collected. Slides for polymorphonuclear (PMN) cell counting were prepared and cytobrush was used for RNA extraction and analysis of relative abundance of il1, il6, il8, and tnf mRNA. Cows from the Early group had less (P < 0.05) pregnancies per AI (P/AI) than cows from Middle and Late groups; 29.7% (19/64), 45.2% (52/115), and 52.31% (34/65), respectively. Accordingly, the Early group had a greater (P < 0.05) proportion of PMN cells in the uterus than Middle and Late groups; 9.0%, 3.8%, and 2.2%, respectively. Relative abundances of il1 and il8 mRNA were greater (P < 0.05) in the Early group than Middle and Late groups. These results indicate that beef cows subjected to TAI protocols early postpartum (< 30 DPP) are less likely to become pregnant, which is associated with increased... Mostrar Tudo |
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Palavras-Chave: |
Bovino de corte; Células polimorfonucleares; Cytobrush; Fertilidade uterina; PMN cell. |
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Thesagro: |
Fertilidade Animal. |
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Thesaurus Nal: |
Calving; Cytokines. |
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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/item/183175/1/ARS-saude-uterina-2018.pdf
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Marc: |
LEADER 02544naa a2200313 a 4500
001 2095927
005 2018-09-18
008 2018 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.anireprosci.2018.08.039$2DOI
100 1 $aPFEIFER, L. F. M.
245 $aUterine inflammation and fertility of beef cows subjected to timed AI at different days postpartum.$h[electronic resource]
260 $c2018
520 $aThe aim of this study was to evaluate the uterine health and fertility of postpartum beef cows subjected to timed AI (TAI) protocols at different days from calving. Lactating Nelore cows (Bos indicus; n = 244) were used in this study. The TAI protocols were initiated between 20 and 60 days postpartum (DPP). Cows were subjected to an estradiol-progesterone based TAI protocol. The cows were divided into three groups according to the days postpartum at the time the hormonal treatment was initiated: 1) Early (n = 64), cows between 20 and 30 DPP; 2) Middle (n = 115), cows between 31 and 45 DPP; and 3) Late (n = 65), cows between 46 and 60 DPP. At Day 0 of the protocol, endometrial cytobrush samples were collected. Slides for polymorphonuclear (PMN) cell counting were prepared and cytobrush was used for RNA extraction and analysis of relative abundance of il1, il6, il8, and tnf mRNA. Cows from the Early group had less (P < 0.05) pregnancies per AI (P/AI) than cows from Middle and Late groups; 29.7% (19/64), 45.2% (52/115), and 52.31% (34/65), respectively. Accordingly, the Early group had a greater (P < 0.05) proportion of PMN cells in the uterus than Middle and Late groups; 9.0%, 3.8%, and 2.2%, respectively. Relative abundances of il1 and il8 mRNA were greater (P < 0.05) in the Early group than Middle and Late groups. These results indicate that beef cows subjected to TAI protocols early postpartum (< 30 DPP) are less likely to become pregnant, which is associated with increased inflammation and relative abundance of mRNA for the proinflammatory cytokines il1 and il8.
650 $aCalving
650 $aCytokines
650 $aFertilidade Animal
653 $aBovino de corte
653 $aCélulas polimorfonucleares
653 $aCytobrush
653 $aFertilidade uterina
653 $aPMN cell
700 1 $aANDRADE, J. de S.
700 1 $aMOREIRA, E. M.
700 1 $aSILVA, R. R. da
700 1 $aNEVES, P. M. A.
700 1 $aSILVA, G. M. da S.
700 1 $aLEMOS, I. C.
700 1 $aSCHNEIDER, A.
773 $tAnimal Reproduction Science$gv. 197, p. 268-277, 2018.
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Registro original: |
Embrapa Rondônia (CPAF-RO) |
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| 2. |  | SILVA, P. P. G. da; ANDRADE, C. de L. T. de; AMARAL, T. A.; CASTRO, A. A. de; TEIXEIRA, T. C.; PAIXAO, J. S. Análise da sensibilidade da cultura do milho às mudanças climáticas empregando modelos de simulação: 1 - resposta às alterações na temperatura do ar. In: CONGRESSO NACIONAL DE MILHO E SORGO, 30.; SIMPÓSIO SOBRE LEPDÓPTEROS COMUNS A MILHO, SOJA E ALGODÃO, 1., 2014, Salvador. Eficiência nas cadeias produtivas e o abastecimento global: resumos expandidos. Sete Lagoas: Associação Brasileira de Milho e Sorgo, 2014. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Milho e Sorgo. |
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| Registros recuperados : 2 | |
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