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Registro Completo |
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Biblioteca(s): |
Embrapa Suínos e Aves. |
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Data corrente: |
01/09/1998 |
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Data da última atualização: |
11/07/2007 |
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Autoria: |
COOK, D. A. |
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Título: |
The conceptual analysis of a dynamic mathematical model for the estimation of the amino acid requirements for pigs from weaning to maturity. |
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Ano de publicação: |
1991 |
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Fonte/Imprenta: |
Urbana: University of Illinois at Urbana-Champaign, 1991. |
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Páginas: |
168p. |
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Idioma: |
Inglês |
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Notas: |
Tese Doutorado |
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Conteúdo: |
A deterministic model for the prediction of amino acid requirements ofgrowing pigs was developed. Comparisons between model outputs and literature values indicated that the model adequately predicts amino acid requirements. During the development of the model, limitations in the literature were identified. Therefore, the following experiments were conducted to provide needed components of the model. Two experiments were conduced to characterize the potential gain in body nitrogen (GBN)of growing pigs. In experiment 1, pigs were grow from weaning to 150 kg to characterize protein and fat growth. In experiment 2, proximate analysis of the whole body of pigs raised to maturity provided estimates of the nitrogen content of the body at maturity (NBmx). The following equation was used to characterize GBN: GBN = KNmx* FFBWaN* ((NBmx-BN)/NBmx). From data colleted above, three relationships were used to describe DE intake. Two exponential equations, containing body weight (BW) or body protein (BP) as variables, were used. Use of BP in place ofBW did not improve the statistical fit of the equation. Calculation ofDE intake from estimated utilization of energy provided values that followed a similar pattern but were consistently lower than observed feed intakes. An experiment was conducted to quantify the effect of energy density on DE intake and growth. Four DE levels (2.9, 3.2, 3.5 and 3.8 Mcal DE/kg) were fed. Increasing DE content resulted in a quadraticresponse (P<.01) for ADG and gain/feed and a cubic response (P<.05) for daily DE intake. A response surface regression (R2=.93) was used to describe the change in DE intake relative to DE concentration and BW. In a final experiment, the effect of energy intake on protein and fat growth was investigated. Treatments consisted of four levels of feed intake: ad libitum (100%), 70%, 50% and 30%. Increasing ME intake resulted in a quadratic response (P<.05) for ADG and gain/feed. The response of GBN was dependent upon gender and BW gain in body fat response linearly (P<.001). An equation to describe GBN relative to BW and ME intake was developed. The use of fat-free BW in place of BW did not improve the statistical fit. MenosA deterministic model for the prediction of amino acid requirements ofgrowing pigs was developed. Comparisons between model outputs and literature values indicated that the model adequately predicts amino acid requirements. During the development of the model, limitations in the literature were identified. Therefore, the following experiments were conducted to provide needed components of the model. Two experiments were conduced to characterize the potential gain in body nitrogen (GBN)of growing pigs. In experiment 1, pigs were grow from weaning to 150 kg to characterize protein and fat growth. In experiment 2, proximate analysis of the whole body of pigs raised to maturity provided estimates of the nitrogen content of the body at maturity (NBmx). The following equation was used to characterize GBN: GBN = KNmx* FFBWaN* ((NBmx-BN)/NBmx). From data colleted above, three relationships were used to describe DE intake. Two exponential equations, containing body weight (BW) or body protein (BP) as variables, were used. Use of BP in place ofBW did not improve the statistical fit of the equation. Calculation ofDE intake from estimated utilization of energy provided values that followed a similar pattern but were consistently lower than observed feed intakes. An experiment was conducted to quantify the effect of energy density on DE intake and growth. Four DE levels (2.9, 3.2, 3.5 and 3.8 Mcal DE/kg) were fed. Increasing DE content resulted in a quadraticresponse (P<.01) for ADG and ... Mostrar Tudo |
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Palavras-Chave: |
Amino acid; Growing; Mathematical model; Predicao; Requerimento; Requirements. |
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Thesagro: |
Aminoácido; Crescimento; Modelo Matemático; Suíno; Terminação. |
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Thesaurus Nal: |
finishing; prediction; swine. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03038nam a2200301 a 4500
001 1433532
005 2007-07-11
008 1991 bl uuuu m 00u1 u #d
100 1 $aCOOK, D. A.
245 $aThe conceptual analysis of a dynamic mathematical model for the estimation of the amino acid requirements for pigs from weaning to maturity.
260 $aUrbana: University of Illinois at Urbana-Champaign$c1991
300 $a168p.
500 $aTese Doutorado
520 $aA deterministic model for the prediction of amino acid requirements ofgrowing pigs was developed. Comparisons between model outputs and literature values indicated that the model adequately predicts amino acid requirements. During the development of the model, limitations in the literature were identified. Therefore, the following experiments were conducted to provide needed components of the model. Two experiments were conduced to characterize the potential gain in body nitrogen (GBN)of growing pigs. In experiment 1, pigs were grow from weaning to 150 kg to characterize protein and fat growth. In experiment 2, proximate analysis of the whole body of pigs raised to maturity provided estimates of the nitrogen content of the body at maturity (NBmx). The following equation was used to characterize GBN: GBN = KNmx* FFBWaN* ((NBmx-BN)/NBmx). From data colleted above, three relationships were used to describe DE intake. Two exponential equations, containing body weight (BW) or body protein (BP) as variables, were used. Use of BP in place ofBW did not improve the statistical fit of the equation. Calculation ofDE intake from estimated utilization of energy provided values that followed a similar pattern but were consistently lower than observed feed intakes. An experiment was conducted to quantify the effect of energy density on DE intake and growth. Four DE levels (2.9, 3.2, 3.5 and 3.8 Mcal DE/kg) were fed. Increasing DE content resulted in a quadraticresponse (P<.01) for ADG and gain/feed and a cubic response (P<.05) for daily DE intake. A response surface regression (R2=.93) was used to describe the change in DE intake relative to DE concentration and BW. In a final experiment, the effect of energy intake on protein and fat growth was investigated. Treatments consisted of four levels of feed intake: ad libitum (100%), 70%, 50% and 30%. Increasing ME intake resulted in a quadratic response (P<.05) for ADG and gain/feed. The response of GBN was dependent upon gender and BW gain in body fat response linearly (P<.001). An equation to describe GBN relative to BW and ME intake was developed. The use of fat-free BW in place of BW did not improve the statistical fit.
650 $afinishing
650 $aprediction
650 $aswine
650 $aAminoácido
650 $aCrescimento
650 $aModelo Matemático
650 $aSuíno
650 $aTerminação
653 $aAmino acid
653 $aGrowing
653 $aMathematical model
653 $aPredicao
653 $aRequerimento
653 $aRequirements
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Registro original: |
Embrapa Suínos e Aves (CNPSA) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Hortaliças. |
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Data corrente: |
23/02/2015 |
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Data da última atualização: |
23/02/2015 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
SOARES, D. C.; SILVA, L. R. B.; FONTENELLE, M. R.; LIMA, C. E. P.; LOPES, C. A.; SOUZA, R. B. de; ZANDONADI, D. B. |
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Afiliação: |
D. C. SOARES., Faculdades ICESP/Promove de Brasília, Brasília, DF; L. R. B. SILVA., Faculdades ICESP/Promove de Brasília, Brasília, DF; MARIANA RODRIGUES FONTENELLE, CNPH; CARLOS EDUARDO PACHECO LIMA, CNPH; CARLOS ALBERTO LOPES, CNPH; RONESSA BARTOLOMEU DE SOUZA, CNPH; DANIEL BASILIO ZANDONADI, CNPH. |
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Título: |
Carbono da biomassa microbiana em solos tratados com diferentes bokashis. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
In: JORNADA CIENTÍFICA DA EMBRAPA HORTALIÇAS, 4., 2014, Brasília, DF. Resumos... Brasília: Embrapa Hortaliças, 2014. |
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Idioma: |
Português |
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Notas: |
Resumo 5. |
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Conteúdo: |
Nesse trabalho foi avaliado o Carbono da Biomassa Microbiana (CBM) do solo em vasos tratados com diferentes bokashis (BA, com esterco de ave; BB, com esterco bovino e BC, produzido no CNPH) em dois solos diferentes (um naturalmente infestado com Ralstonia solanacearum coletado em Alexânia e outro artificialmente infestado preparado no CNPH). |
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Thesagro: |
Adubo organico; Carbono; Solo. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/118484/1/5.pdf
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Marc: |
LEADER 01056nam a2200229 a 4500
001 2009425
005 2015-02-23
008 2014 bl uuuu u00u1 u #d
100 1 $aSOARES, D. C.
245 $aCarbono da biomassa microbiana em solos tratados com diferentes bokashis.$h[electronic resource]
260 $aIn: JORNADA CIENTÍFICA DA EMBRAPA HORTALIÇAS, 4., 2014, Brasília, DF. Resumos... Brasília: Embrapa Hortaliças$c2014
500 $aResumo 5.
520 $aNesse trabalho foi avaliado o Carbono da Biomassa Microbiana (CBM) do solo em vasos tratados com diferentes bokashis (BA, com esterco de ave; BB, com esterco bovino e BC, produzido no CNPH) em dois solos diferentes (um naturalmente infestado com Ralstonia solanacearum coletado em Alexânia e outro artificialmente infestado preparado no CNPH).
650 $aAdubo organico
650 $aCarbono
650 $aSolo
700 1 $aSILVA, L. R. B.
700 1 $aFONTENELLE, M. R.
700 1 $aLIMA, C. E. P.
700 1 $aLOPES, C. A.
700 1 $aSOUZA, R. B. de
700 1 $aZANDONADI, D. B.
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Embrapa Hortaliças (CNPH) |
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