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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
31/03/2005 |
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Data da última atualização: |
31/03/2005 |
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Autoria: |
BEN SALEM, H.; ATTI, N.; PRIOLO, A.; NEFZAOUI, A. |
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Título: |
Polyethylene glycol in concentrate or feedblocks to deactivate condensed tannins in Acacia cyanophylla Lindl. foliage 1. Effects on intake, digestion and growth of Barbarine lambs. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Animal Science, v. 75, pt 1, p. 127-135, 2002. |
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Idioma: |
Inglês |
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Conteúdo: |
Thirty young male sheep were given air-dried foliage of Acacia cyanophylla Lindl. ad libitum and 400 goat hay. Animals were divided into five equal groups each of which was supplemented with either 300 g concentrate with (CPEG) or without (C) 20 g polyethylene glycol 4000 (PEG) or urea-containing feedblocks with (BUPEG) or without (BU) PEG. One other treatment was PEG-containing feedblock without urea (BPEG) PEG was used to preferentially bind A. cyanophylla condensed tannins (CT). Feedblocks (BU, BPEG and BUPEG respectively) were made from olive cake (395, 376 and 353), wheat bran (263, 250 and 235), wheatfeeds (132, 125 and 118), quicklime (88, 83 and 78), salt (44, 42 and 39), mineral and vitamin supplement (12, 10 and 10), urea (66,0 and 59) and PEG (0, 114 and 107 g/kg). These diets were used in growth (60 days) and metabolism (7 days) studies. Urea-containing feedblocks, as compared with concentra te, were higher in crude protein (CP; 235 v. 116 g/kg DM) and lower in metabolizable energy (6 v. 10 MJ/kg DM). The type of supplement (i.e. concentrate v. feedblocks) had no effect (P> 0.05) on A. cyanophylla DM intake, CP and neutral-detergent fibre (NDF) digestibilities and nitrogen (N) retention. However, concentrate-containing diets exhibited higher DM and organic matter (OM) digestibilities (P < 0.05), urinary excretion of allantoin (P < 0.05), microbial N supply (P < 0.001) and average daily gain (P < 0.001). PEG supply increased DM intake of A. cyanophylla, CP digestibility, N retention, allantoin voided in urine, microbial N supply and lamb growth. PEG-containing feedblocks enriched (BUPEG) or not (BPEG) with urea had similar effect on A. cyanophylla intake, DM, OM and NDF digestibilities, allantoin in urine, microbial N supply and average daily gain. These findings suggested that urea inclusion in feedblocks are not necessary and thus lhe feeding cosi may be reduced. The higher amount of microbial N and daily gain in lambs given concentrate as compared with those on feedblock-supplemented diets was ascribed to lhe leveI of energy which was low in lhe latter diets. Enrichment of feedblocks with energy-rich ingredients such as molasses or cactus fruits could be a solution. This work confirmed that tannins depressed lhe nutritive value of this shrub species and lamb growth. However, lhe reduction was not drastic in lhe absence of PEG in lhe diet. Feedblock diet (BU) matched maintenance requirements of lambs while lambs on concentrate-supplemented diet (C) grew at a raie of 78 g/day. The choice between these two supplements will depend upon farm conditions and objectives. MenosThirty young male sheep were given air-dried foliage of Acacia cyanophylla Lindl. ad libitum and 400 goat hay. Animals were divided into five equal groups each of which was supplemented with either 300 g concentrate with (CPEG) or without (C) 20 g polyethylene glycol 4000 (PEG) or urea-containing feedblocks with (BUPEG) or without (BU) PEG. One other treatment was PEG-containing feedblock without urea (BPEG) PEG was used to preferentially bind A. cyanophylla condensed tannins (CT). Feedblocks (BU, BPEG and BUPEG respectively) were made from olive cake (395, 376 and 353), wheat bran (263, 250 and 235), wheatfeeds (132, 125 and 118), quicklime (88, 83 and 78), salt (44, 42 and 39), mineral and vitamin supplement (12, 10 and 10), urea (66,0 and 59) and PEG (0, 114 and 107 g/kg). These diets were used in growth (60 days) and metabolism (7 days) studies. Urea-containing feedblocks, as compared with concentra te, were higher in crude protein (CP; 235 v. 116 g/kg DM) and lower in metabolizable energy (6 v. 10 MJ/kg DM). The type of supplement (i.e. concentrate v. feedblocks) had no effect (P> 0.05) on A. cyanophylla DM intake, CP and neutral-detergent fibre (NDF) digestibilities and nitrogen (N) retention. However, concentrate-containing diets exhibited higher DM and organic matter (OM) digestibilities (P < 0.05), urinary excretion of allantoin (P < 0.05), microbial N supply (P < 0.001) and average daily gain (P < 0.001). PEG supply increased DM intake of A. cyanophylla, CP digesti... Mostrar Tudo |
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Palavras-Chave: |
Acacia cyanophylla; Polietileno glicol. |
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Thesagro: |
Consumo; Cordeiro; Crescimento; Digestibilidade; Ovino; Tanino. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03388naa a2200253 a 4500
001 1531038
005 2005-03-31
008 2002 bl uuuu u00u1 u #d
100 1 $aBEN SALEM, H.
245 $aPolyethylene glycol in concentrate or feedblocks to deactivate condensed tannins in Acacia cyanophylla Lindl. foliage 1. Effects on intake, digestion and growth of Barbarine lambs.
260 $c2002
520 $aThirty young male sheep were given air-dried foliage of Acacia cyanophylla Lindl. ad libitum and 400 goat hay. Animals were divided into five equal groups each of which was supplemented with either 300 g concentrate with (CPEG) or without (C) 20 g polyethylene glycol 4000 (PEG) or urea-containing feedblocks with (BUPEG) or without (BU) PEG. One other treatment was PEG-containing feedblock without urea (BPEG) PEG was used to preferentially bind A. cyanophylla condensed tannins (CT). Feedblocks (BU, BPEG and BUPEG respectively) were made from olive cake (395, 376 and 353), wheat bran (263, 250 and 235), wheatfeeds (132, 125 and 118), quicklime (88, 83 and 78), salt (44, 42 and 39), mineral and vitamin supplement (12, 10 and 10), urea (66,0 and 59) and PEG (0, 114 and 107 g/kg). These diets were used in growth (60 days) and metabolism (7 days) studies. Urea-containing feedblocks, as compared with concentra te, were higher in crude protein (CP; 235 v. 116 g/kg DM) and lower in metabolizable energy (6 v. 10 MJ/kg DM). The type of supplement (i.e. concentrate v. feedblocks) had no effect (P> 0.05) on A. cyanophylla DM intake, CP and neutral-detergent fibre (NDF) digestibilities and nitrogen (N) retention. However, concentrate-containing diets exhibited higher DM and organic matter (OM) digestibilities (P < 0.05), urinary excretion of allantoin (P < 0.05), microbial N supply (P < 0.001) and average daily gain (P < 0.001). PEG supply increased DM intake of A. cyanophylla, CP digestibility, N retention, allantoin voided in urine, microbial N supply and lamb growth. PEG-containing feedblocks enriched (BUPEG) or not (BPEG) with urea had similar effect on A. cyanophylla intake, DM, OM and NDF digestibilities, allantoin in urine, microbial N supply and average daily gain. These findings suggested that urea inclusion in feedblocks are not necessary and thus lhe feeding cosi may be reduced. The higher amount of microbial N and daily gain in lambs given concentrate as compared with those on feedblock-supplemented diets was ascribed to lhe leveI of energy which was low in lhe latter diets. Enrichment of feedblocks with energy-rich ingredients such as molasses or cactus fruits could be a solution. This work confirmed that tannins depressed lhe nutritive value of this shrub species and lamb growth. However, lhe reduction was not drastic in lhe absence of PEG in lhe diet. Feedblock diet (BU) matched maintenance requirements of lambs while lambs on concentrate-supplemented diet (C) grew at a raie of 78 g/day. The choice between these two supplements will depend upon farm conditions and objectives.
650 $aConsumo
650 $aCordeiro
650 $aCrescimento
650 $aDigestibilidade
650 $aOvino
650 $aTanino
653 $aAcacia cyanophylla
653 $aPolietileno glicol
700 1 $aATTI, N.
700 1 $aPRIOLO, A.
700 1 $aNEFZAOUI, A.
773 $tAnimal Science$gv. 75, pt 1, p. 127-135, 2002.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
01/02/2006 |
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Data da última atualização: |
01/02/2006 |
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Autoria: |
SIMÕES, M. L.; MARTIN NETO, L.; FERREIRA, J.; SILVA, W. T. L.; MILORI, D.; NASCIMENTO, O. R.; COSTA FILHO, A. J. da. |
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Título: |
Hydrophobic sites in humic substances as detected by spin-label probes. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
In: [ENVIRONMENTAL MOLECULAR SCIENCE INSTITUTE] EMSI/NORTH CENTRAL NOM WORKSHOP, 2005, Columbus. [Abstracts...]. Columbus: EMSI, 2005. p. 32. |
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Idioma: |
Inglês |
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Conteúdo: |
Applications of spectroscopic tools to humic materials reserach are very useful bringing molecular evidences of structure and reactivity of these molecules. In this paper will be presented recent contributions on the use of different spin-label molecules, detected by electron spin resonance (ESR) spectroscopy, as probe to identy hydrophobic interactions of humic substances. |
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Palavras-Chave: |
ESR; HA; Spectroscopic tools; Spin-label. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01107naa a2200241 a 4500
001 1029330
005 2006-02-01
008 2005 bl --- 0-- u #d
100 1 $aSIMÕES, M. L.
245 $aHydrophobic sites in humic substances as detected by spin-label probes.
260 $c2005
520 $aApplications of spectroscopic tools to humic materials reserach are very useful bringing molecular evidences of structure and reactivity of these molecules. In this paper will be presented recent contributions on the use of different spin-label molecules, detected by electron spin resonance (ESR) spectroscopy, as probe to identy hydrophobic interactions of humic substances.
653 $aESR
653 $aHA
653 $aSpectroscopic tools
653 $aSpin-label
700 1 $aMARTIN NETO, L.
700 1 $aFERREIRA, J.
700 1 $aSILVA, W. T. L.
700 1 $aMILORI, D.
700 1 $aNASCIMENTO, O. R.
700 1 $aCOSTA FILHO, A. J. da
773 $tIn: [ENVIRONMENTAL MOLECULAR SCIENCE INSTITUTE] EMSI/NORTH CENTRAL NOM WORKSHOP, 2005, Columbus. [Abstracts...]. Columbus: EMSI, 2005. p. 32.
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