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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
17/04/2019 |
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Data da última atualização: |
24/01/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CUNHA, C. S.; MARCONDES MI; VELOSO, C. M.; MANTOVANI, H. C.; PEREIRA, L. G. R.; TOMICH, T. R.; DILL-MCFARLAND, K. A.; SUEN, G. |
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Afiliação: |
C. S. CUNHA, UFV; M. I. MARCONDES, UFV; C. M. VELOSO, UFV; H. C. MANTOVANI, UFV; LUIZ GUSTAVO RIBEIRO PEREIRA, CNPGL; THIERRY RIBEIRO TOMICH, CNPGL; K. A. DILL-MCFARLAND, University of Wisconsin-Madison, Madison, WI, USA; G. SUEN, University of Wisconsin-Madison, Madison, WI, USA. |
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Título: |
Compositional and structural dynamics of the ruminal microbiota in dairy heifers and its relationship to methane production. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Journal of the Science of Food and Agriculture, n. 99, p. 210-218, 2019. |
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DOI: |
10.1002/jsfa.9162 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract BACKGROUND: Heifers emit more enteric methane (CH4) than adult cows and these emissions tend to decrease per unit feed intake as they age. However, common mitigation strategies like expensive high-quality feeds are not economically feasible for these pre-production animals.Given its direct role in CH4 production, altering the rumenmicrobiota is another potential avenue for reducing CH4 production by ruminants. However, to identify effective microbial targets, a better understanding of the rumen microbiota and its relationship to CH4 production across heifer development is needed. RESULTS: Here, we investigate the relationship between rumen bacterial, archaeal, and fungal communities as well as CH4 emissions and a number of production traits in prepubertal (PP), pubertal (PB), and pregnant heifers (PG). Overall, PG heifers emitted the most CH4, followed by PB and PP heifers. The bacterial genus Acetobacter and the archaeal genus Methanobrevibacter were positively associated, while Eubacterium and Methanosphaera were negatively associated with raw CH4 production by heifers. When corrected for dietary intake, both Eubacterium and Methanosphaera remained negatively associated with CH4 production. CONCLUSION:We suggest that Eubacterium and Methanosphaera represent likely targets for CH4 mitigation efforts in heifers as they were negatively associated with CH4 production and not significantly associated with production traits. |
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Palavras-Chave: |
16S rRNA; Microbiota; Next generation sequencing; Rumen microbiology. |
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Thesaurus Nal: |
Greenhouse gases; Methane. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02340naa a2200289 a 4500
001 2108299
005 2023-01-24
008 2019 bl uuuu u00u1 u #d
024 7 $a10.1002/jsfa.9162$2DOI
100 1 $aCUNHA, C. S.
245 $aCompositional and structural dynamics of the ruminal microbiota in dairy heifers and its relationship to methane production.$h[electronic resource]
260 $c2019
520 $aAbstract BACKGROUND: Heifers emit more enteric methane (CH4) than adult cows and these emissions tend to decrease per unit feed intake as they age. However, common mitigation strategies like expensive high-quality feeds are not economically feasible for these pre-production animals.Given its direct role in CH4 production, altering the rumenmicrobiota is another potential avenue for reducing CH4 production by ruminants. However, to identify effective microbial targets, a better understanding of the rumen microbiota and its relationship to CH4 production across heifer development is needed. RESULTS: Here, we investigate the relationship between rumen bacterial, archaeal, and fungal communities as well as CH4 emissions and a number of production traits in prepubertal (PP), pubertal (PB), and pregnant heifers (PG). Overall, PG heifers emitted the most CH4, followed by PB and PP heifers. The bacterial genus Acetobacter and the archaeal genus Methanobrevibacter were positively associated, while Eubacterium and Methanosphaera were negatively associated with raw CH4 production by heifers. When corrected for dietary intake, both Eubacterium and Methanosphaera remained negatively associated with CH4 production. CONCLUSION:We suggest that Eubacterium and Methanosphaera represent likely targets for CH4 mitigation efforts in heifers as they were negatively associated with CH4 production and not significantly associated with production traits.
650 $aGreenhouse gases
650 $aMethane
653 $a16S rRNA
653 $aMicrobiota
653 $aNext generation sequencing
653 $aRumen microbiology
700 1 $aMARCONDES MI
700 1 $aVELOSO, C. M.
700 1 $aMANTOVANI, H. C.
700 1 $aPEREIRA, L. G. R.
700 1 $aTOMICH, T. R.
700 1 $aDILL-MCFARLAND, K. A.
700 1 $aSUEN, G.
773 $tJournal of the Science of Food and Agriculture$gn. 99, p. 210-218, 2019.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
30/12/2016 |
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Data da última atualização: |
29/12/2017 |
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Autoria: |
SEPÚLVEDA, R V.; VALENTE, F. L.; REIS, E. C. C.; ARAÚJO, F. R.; ELEOTÉRIO R. B.; QUEIROZ, P. V. S.; BORGES, A. P. B. |
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Afiliação: |
RODRIGO V. SEPÚLVEDA, UFV; FABRÍCIO L. VALENTE, UFV; EMILY C. C. REIS, UFV; FABIANA R ARAÚJO, UFV; RENATO B. ELEOTÉRIO, UFV; PAULO V. S. QUEIROZ, UFV; ANDRÉA P. B. BORGES, UFV. |
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Título: |
Bacterial cellulose and bacterial cellulose/polycaprolactone composites as tissue substitutes in rabbits' cornea. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Pesquisa Veterinária Brasileira, Rio de Janeiro, v. 36, n. 10, p. 986-992, out. 2016. |
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Idioma: |
Inglês |
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Conteúdo: |
In order to test the performance of bacterial cellulose/polycaprolactone composite (BC/PCL) and pure bacterial cellulose (BC) as tissue substitutes in rabbits? cornea, a superficial ulcer containing 5mm in diameter and 0.2mm deep was made in the right cornea of 36 rabbits, then a interlayer pocket was created from the basis of this ulcer. Twelve rabbits received BC/PCL membrane and 12 were treated with BC membranes, both membranes with 8mm in diameter. The remaining rabbits received no membrane constituting the control group. The animals were clinically followed up for 45 days. Three animals of each group were euthanized at three, seven, 21, and 45 days after implantation for histological examination of the cornea along with the implant. Clinical observation revealed signs of moderate inflammatory process, decreasing from day 20th in the implanted groups. Histology showed absence of epithelium on the membranes, fibroplasia close to the implants, lymph inflammatory infiltrate with giant cells, collagen disorganization, with a predominance of immature collagen fibers in both groups with implants. Although inflammatory response is acceptable, the membranes used does not satisfactorily played the role of tissue substitute for the cornea during the study period. |
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Palavras-Chave: |
Bacterial cellulose; Bacterial cellulose/polycaprolactone composite; Biomaterial; Celulose bacteriana; Corneal ulcer; Engenharia de tecido; Modelo animal; Tissue substitutes; Úlcera de córnea. |
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Thesagro: |
Coelho. |
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Thesaurus NAL: |
Animal models; Biocompatible materials; Cornea; Gluconacetobacter xylinus; Rabbits; Tissue engineering. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/152581/1/Bacterial-cellulose-and-bacterial.pdf
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Marc: |
LEADER 02466naa a2200385 a 4500
001 2059677
005 2017-12-29
008 2016 bl uuuu u00u1 u #d
100 1 $aSEPÚLVEDA, R V.
245 $aBacterial cellulose and bacterial cellulose/polycaprolactone composites as tissue substitutes in rabbits' cornea.$h[electronic resource]
260 $c2016
520 $aIn order to test the performance of bacterial cellulose/polycaprolactone composite (BC/PCL) and pure bacterial cellulose (BC) as tissue substitutes in rabbits? cornea, a superficial ulcer containing 5mm in diameter and 0.2mm deep was made in the right cornea of 36 rabbits, then a interlayer pocket was created from the basis of this ulcer. Twelve rabbits received BC/PCL membrane and 12 were treated with BC membranes, both membranes with 8mm in diameter. The remaining rabbits received no membrane constituting the control group. The animals were clinically followed up for 45 days. Three animals of each group were euthanized at three, seven, 21, and 45 days after implantation for histological examination of the cornea along with the implant. Clinical observation revealed signs of moderate inflammatory process, decreasing from day 20th in the implanted groups. Histology showed absence of epithelium on the membranes, fibroplasia close to the implants, lymph inflammatory infiltrate with giant cells, collagen disorganization, with a predominance of immature collagen fibers in both groups with implants. Although inflammatory response is acceptable, the membranes used does not satisfactorily played the role of tissue substitute for the cornea during the study period.
650 $aAnimal models
650 $aBiocompatible materials
650 $aCornea
650 $aGluconacetobacter xylinus
650 $aRabbits
650 $aTissue engineering
650 $aCoelho
653 $aBacterial cellulose
653 $aBacterial cellulose/polycaprolactone composite
653 $aBiomaterial
653 $aCelulose bacteriana
653 $aCorneal ulcer
653 $aEngenharia de tecido
653 $aModelo animal
653 $aTissue substitutes
653 $aÚlcera de córnea
700 1 $aVALENTE, F. L.
700 1 $aREIS, E. C. C.
700 1 $aARAÚJO, F. R.
700 1 $aELEOTÉRIO R. B.
700 1 $aQUEIROZ, P. V. S.
700 1 $aBORGES, A. P. B.
773 $tPesquisa Veterinária Brasileira, Rio de Janeiro$gv. 36, n. 10, p. 986-992, out. 2016.
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