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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Corte. Para informações adicionais entre em contato com cnpgc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos; Embrapa Gado de Corte. |
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Data corrente: |
29/09/2011 |
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Data da última atualização: |
23/09/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ÍTAVO, C. C. B. F.; MORAIS, M. G.; COSTA, C.; ÍTAVO, L. C. V.; FRANCO, G. L.; SILVA, J. A. da; REIS, F. A. |
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Afiliação: |
Universidade Federal do Mato Grosso do Sul; Universidade Federal do Mato Grosso do Sul; Universidade Estadual Paulista, Botucatu, SP; Universidade Católica Dom Bosco; Universidade Federal do Mato Grosso do Sul, Campo Grande, MS.; Universidade Federal do Mato Grosso do Sul - Campo Grande, MS.; FERNANDO ALVARENGA REIS, CNPC. |
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Título: |
Addition of propolis or monensin in the diet: behavior and productivity of lambs in feedlot. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Animal Feed Science and Technology, v. 165, n. 3/4, p. 161-166, 2011. |
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Idioma: |
Inglês |
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Conteúdo: |
This study assessed the behavior and the productive performance of lambs finished in feedlot receiving diets added with green propolis, brown propolis or monensin sodium. The experiment used a randomized block design that compared weight gain of 32 male lambs aged four months among four dietary treatments: (1) control, non-enriched diet; (2) with green propolis; (3) with brown propolis; and (4) with monensin sodium. The basic diet provided to all the groups was a total mixed ration (TMR) with a forage:concentrate ratio of 50:50, in which Tifton 85 (Cynodon spp.) grass was used as roughage feed and the concentrate was based on soybean meal, corn meal and minerals. The green propolis diet decreased rumination and increased resting time. The diets provided similar feeding rate (g/min).DM and aNDF intake (g/kg of body weight and g/kg of metabolic weight) were higher in the control treatment. Although the control group had the highest weight gain, the highest feed conversion and feed efficiency were found in lambs fed brown propolis and monensin sodium. Technically, brown propolis can substitute monensin sodium as a dietary additive for feedlot lambs. However, complementary studies are needed to identify the best levels of brown propolis to add to these diets. |
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Palavras-Chave: |
Comportamento alimentar; Monensina sódica. |
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Thesagro: |
Anti-helmíntico; Confinamento; Cordeiro; Hábito alimentar; Nutrição Animal; Ovino; Própolis. |
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Thesaurus Nal: |
Sheep. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02167naa a2200313 a 4500
001 1902422
005 2019-09-23
008 2011 bl uuuu u00u1 u #d
100 1 $aÍTAVO, C. C. B. F.
245 $aAddition of propolis or monensin in the diet$bbehavior and productivity of lambs in feedlot.$h[electronic resource]
260 $c2011
520 $aThis study assessed the behavior and the productive performance of lambs finished in feedlot receiving diets added with green propolis, brown propolis or monensin sodium. The experiment used a randomized block design that compared weight gain of 32 male lambs aged four months among four dietary treatments: (1) control, non-enriched diet; (2) with green propolis; (3) with brown propolis; and (4) with monensin sodium. The basic diet provided to all the groups was a total mixed ration (TMR) with a forage:concentrate ratio of 50:50, in which Tifton 85 (Cynodon spp.) grass was used as roughage feed and the concentrate was based on soybean meal, corn meal and minerals. The green propolis diet decreased rumination and increased resting time. The diets provided similar feeding rate (g/min).DM and aNDF intake (g/kg of body weight and g/kg of metabolic weight) were higher in the control treatment. Although the control group had the highest weight gain, the highest feed conversion and feed efficiency were found in lambs fed brown propolis and monensin sodium. Technically, brown propolis can substitute monensin sodium as a dietary additive for feedlot lambs. However, complementary studies are needed to identify the best levels of brown propolis to add to these diets.
650 $aSheep
650 $aAnti-helmíntico
650 $aConfinamento
650 $aCordeiro
650 $aHábito alimentar
650 $aNutrição Animal
650 $aOvino
650 $aPrópolis
653 $aComportamento alimentar
653 $aMonensina sódica
700 1 $aMORAIS, M. G.
700 1 $aCOSTA, C.
700 1 $aÍTAVO, L. C. V.
700 1 $aFRANCO, G. L.
700 1 $aSILVA, J. A. da
700 1 $aREIS, F. A.
773 $tAnimal Feed Science and Technology$gv. 165, n. 3/4, p. 161-166, 2011.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Agroenergia. |
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Data corrente: |
15/03/2019 |
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Data da última atualização: |
18/11/2019 |
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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: |
VICTOR, P. A.; GONCALVES, S. B.; MACHADO, F. |
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Afiliação: |
Priscilla Araújo Victor, UnB; SILVIA BELEM GONCALVES, CNPAE; Fabricio Machado, UnB. |
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Título: |
Styrene/Lignin-Based polymeric composites obtained through a sequential Mass-Suspension polymerization process. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Journal of Polymers and the Environment, v. 26, p. 1755-1774, 2018. |
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Idioma: |
Português |
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Conteúdo: |
A modified sequential mass-suspension polymerization was employed to ensure adequate dispersion of lignin into the monomeric phase. Due to its complex macromolecular structure and low compatibility with styrene, eucalyptus wood-extracted lignin, via a modified Kraft method, was esterified with methacrylic anhydride to ensure organic phase homogeneity into the reaction medium. Infrared spectroscopy showed a decrease in the hydroxyl band, a characteristic of natural lignin (3200?3400 cm−1) and an increase in the characteristic ester band (1720?1740 cm−1) whereas nuclear magnetic resonance measurements exhibited intense peaks in the range from 1.7 to 2.05 ppm (?CH3) and 5.4 to 6.2 ppm (=CH2), related to methacrylic anhydride. Comparatively, the esterified lignin also displayed an increase of its glass transition temperature for 98 °C, related to natural lignin, whose Tg was determined to be equal to 91 °C. Styrene/lignin-based polymers exhibited higher average molar masses in comparison to the values observed for polystyrene synthesized with similar amounts of benzoyl peroxide, due to the ability of lignin to act as a free-radical scavenger. Composites obtained with styrene and natural or esterified lignin were successfully synthesized, presenting regular morphology and proper lignin dispersion. Based on a very simple polymerization system, it is possible to enhance the final properties of polystyrene through the incorporation of lignin, which represents an important platform for developing attractive polymeric materials from renewable resources. MenosA modified sequential mass-suspension polymerization was employed to ensure adequate dispersion of lignin into the monomeric phase. Due to its complex macromolecular structure and low compatibility with styrene, eucalyptus wood-extracted lignin, via a modified Kraft method, was esterified with methacrylic anhydride to ensure organic phase homogeneity into the reaction medium. Infrared spectroscopy showed a decrease in the hydroxyl band, a characteristic of natural lignin (3200?3400 cm−1) and an increase in the characteristic ester band (1720?1740 cm−1) whereas nuclear magnetic resonance measurements exhibited intense peaks in the range from 1.7 to 2.05 ppm (?CH3) and 5.4 to 6.2 ppm (=CH2), related to methacrylic anhydride. Comparatively, the esterified lignin also displayed an increase of its glass transition temperature for 98 °C, related to natural lignin, whose Tg was determined to be equal to 91 °C. Styrene/lignin-based polymers exhibited higher average molar masses in comparison to the values observed for polystyrene synthesized with similar amounts of benzoyl peroxide, due to the ability of lignin to act as a free-radical scavenger. Composites obtained with styrene and natural or esterified lignin were successfully synthesized, presenting regular morphology and proper lignin dispersion. Based on a very simple polymerization system, it is possible to enhance the final properties of polystyrene through the incorporation of lignin, which represents an importan... Mostrar Tudo |
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Palavras-Chave: |
Compósitos poliméricos; Polimerização sequencial; Polymer composites. |
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Thesaurus NAL: |
Lignin; Styrene. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/194298/1/SILVIA-Victor2018-Article-StyreneLignin-BasedPolymericCo.pdf
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Marc: |
LEADER 02235naa a2200205 a 4500
001 2107112
005 2019-11-18
008 2018 bl uuuu u00u1 u #d
100 1 $aVICTOR, P. A.
245 $aStyrene/Lignin-Based polymeric composites obtained through a sequential Mass-Suspension polymerization process.$h[electronic resource]
260 $c2018
520 $aA modified sequential mass-suspension polymerization was employed to ensure adequate dispersion of lignin into the monomeric phase. Due to its complex macromolecular structure and low compatibility with styrene, eucalyptus wood-extracted lignin, via a modified Kraft method, was esterified with methacrylic anhydride to ensure organic phase homogeneity into the reaction medium. Infrared spectroscopy showed a decrease in the hydroxyl band, a characteristic of natural lignin (3200?3400 cm−1) and an increase in the characteristic ester band (1720?1740 cm−1) whereas nuclear magnetic resonance measurements exhibited intense peaks in the range from 1.7 to 2.05 ppm (?CH3) and 5.4 to 6.2 ppm (=CH2), related to methacrylic anhydride. Comparatively, the esterified lignin also displayed an increase of its glass transition temperature for 98 °C, related to natural lignin, whose Tg was determined to be equal to 91 °C. Styrene/lignin-based polymers exhibited higher average molar masses in comparison to the values observed for polystyrene synthesized with similar amounts of benzoyl peroxide, due to the ability of lignin to act as a free-radical scavenger. Composites obtained with styrene and natural or esterified lignin were successfully synthesized, presenting regular morphology and proper lignin dispersion. Based on a very simple polymerization system, it is possible to enhance the final properties of polystyrene through the incorporation of lignin, which represents an important platform for developing attractive polymeric materials from renewable resources.
650 $aLignin
650 $aStyrene
653 $aCompósitos poliméricos
653 $aPolimerização sequencial
653 $aPolymer composites
700 1 $aGONCALVES, S. B.
700 1 $aMACHADO, F.
773 $tJournal of Polymers and the Environment$gv. 26, p. 1755-1774, 2018.
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Embrapa Agroenergia (CNPAE) |
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