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Registro Completo |
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Biblioteca(s): |
Embrapa Suínos e Aves. |
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Data corrente: |
22/09/2017 |
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Data da última atualização: |
22/09/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BERTOL, T. M.; ZANOTTO, D. L.; COLDEBELLA, A.; LUDKE, J. V. |
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Afiliação: |
TERESINHA MARISA BERTOL, CNPSA; DIRCEU LUIS ZANOTTO, CNPSA; ARLEI COLDEBELLA, CNPSA; JORGE VITOR LUDKE, CNPSA. |
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Título: |
Development and validation of equations to predict the metabolizable energy value of corn for pigs. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Journal of Animal Science, v. 95, p. 291-301. 2017. |
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DOI: |
10.2527/jas2016.0832 |
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Idioma: |
Inglês |
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Conteúdo: |
ABSTRACT: Three experiments were conducted with the aim of developing and validating an equation to predict the ME of corn for pigs from its chemical composition, physical characteristics and particle size. Exp. 1: Eight lots of corn were ground in a hammer mill, using 5 sieves with different screen opening sizes, generating 40 batches of ground corn. The chemical composition (DM, CP, ether extract, crude fiber, ADF, NDF, and ash) and physical characteristics (bulk density? BD and 1,000-kernel weight- TKW) were determined in the 8 lots and geometric mean diameter (GMD) and N-corrected ME (AMEn) were determined in the 40 batches of corn. The AMEn values were determined in 16 metabolism assays with pigs. Mathematical models were adjusted by regression analysis, based on the Akaike Information Criterion. Based on statistical parameters (R2 = 0.76 and prediction error = 1.05%), number of predictor variables, and easiness of measurements, an equation with 2 segments was chosen: y = 2845.41 + 0.9385 × BD ? 20.8784 × CP, if GMD ? 522.98 and y = 3105.75 ? 0.4978 × GMD + 0.9385 × BD ? 20.8784 × CP, if GMD > 522.98. Exp. 2 and 3: Sixty four gilts (Exp. 1; 29.5 ± 3.8 kg) and 64 barrows (Exp. 2; 29.3 ± 3.6 kg), 1 lot of corn, and 3 particle sizes (GMD = 483, 632, and 904 ?m) were used in a 3 × 2 factorial arrangement with 2 methods of diet formulation, differing in ME value of corn: ?FIX? (value from nutrient composition table) vs. ?ESTIMATED? (estimated for each particle size using the equation developed in Exp. 1). In Exp. 2, ADFI was greater (P < 0.05) and feed efficiency was lower (P < 0.05) in the diet with GMD of 904 ?m compared to the diets with GMD of 632 or 483 ?m, but only for diet formulation by the FIX method. In the treatments with GMD of 483 ?m, gilts fed with the diet formulated by the ESTIMATED method had greater (P < 0.10) ADFI, backfat, fat area, and fat:meat ratio than gilts fed the diet formulated by the FIX method. In Exp. 3, particle size and formulation method did not affect (P > 0.10) growth performance and carcass traits of barrows. The equation developed was effective to adjust the ME value of corn, considering particle size variation. However, improvement to the proposed equation is necessary to achieve greater precision for predicting corn ME. Validation of the equation with more lots of corn of different chemical compositions and densities appears necessary to assess the efficacy of the equation regarding the variation of the other predicting variables. MenosABSTRACT: Three experiments were conducted with the aim of developing and validating an equation to predict the ME of corn for pigs from its chemical composition, physical characteristics and particle size. Exp. 1: Eight lots of corn were ground in a hammer mill, using 5 sieves with different screen opening sizes, generating 40 batches of ground corn. The chemical composition (DM, CP, ether extract, crude fiber, ADF, NDF, and ash) and physical characteristics (bulk density? BD and 1,000-kernel weight- TKW) were determined in the 8 lots and geometric mean diameter (GMD) and N-corrected ME (AMEn) were determined in the 40 batches of corn. The AMEn values were determined in 16 metabolism assays with pigs. Mathematical models were adjusted by regression analysis, based on the Akaike Information Criterion. Based on statistical parameters (R2 = 0.76 and prediction error = 1.05%), number of predictor variables, and easiness of measurements, an equation with 2 segments was chosen: y = 2845.41 + 0.9385 × BD ? 20.8784 × CP, if GMD ? 522.98 and y = 3105.75 ? 0.4978 × GMD + 0.9385 × BD ? 20.8784 × CP, if GMD > 522.98. Exp. 2 and 3: Sixty four gilts (Exp. 1; 29.5 ± 3.8 kg) and 64 barrows (Exp. 2; 29.3 ± 3.6 kg), 1 lot of corn, and 3 particle sizes (GMD = 483, 632, and 904 ?m) were used in a 3 × 2 factorial arrangement with 2 methods of diet formulation, differing in ME value of corn: ?FIX? (value from nutrient composition table) vs. ?ESTIMATED? (estimated for each particle size using the... Mostrar Tudo |
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Palavras-Chave: |
Energia metabolizável. |
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Thesagro: |
Milho; Nutrição animal; Suíno. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03180naa a2200217 a 4500
001 2076155
005 2017-09-22
008 2017 bl uuuu u00u1 u #d
024 7 $a10.2527/jas2016.0832$2DOI
100 1 $aBERTOL, T. M.
245 $aDevelopment and validation of equations to predict the metabolizable energy value of corn for pigs.$h[electronic resource]
260 $c2017
520 $aABSTRACT: Three experiments were conducted with the aim of developing and validating an equation to predict the ME of corn for pigs from its chemical composition, physical characteristics and particle size. Exp. 1: Eight lots of corn were ground in a hammer mill, using 5 sieves with different screen opening sizes, generating 40 batches of ground corn. The chemical composition (DM, CP, ether extract, crude fiber, ADF, NDF, and ash) and physical characteristics (bulk density? BD and 1,000-kernel weight- TKW) were determined in the 8 lots and geometric mean diameter (GMD) and N-corrected ME (AMEn) were determined in the 40 batches of corn. The AMEn values were determined in 16 metabolism assays with pigs. Mathematical models were adjusted by regression analysis, based on the Akaike Information Criterion. Based on statistical parameters (R2 = 0.76 and prediction error = 1.05%), number of predictor variables, and easiness of measurements, an equation with 2 segments was chosen: y = 2845.41 + 0.9385 × BD ? 20.8784 × CP, if GMD ? 522.98 and y = 3105.75 ? 0.4978 × GMD + 0.9385 × BD ? 20.8784 × CP, if GMD > 522.98. Exp. 2 and 3: Sixty four gilts (Exp. 1; 29.5 ± 3.8 kg) and 64 barrows (Exp. 2; 29.3 ± 3.6 kg), 1 lot of corn, and 3 particle sizes (GMD = 483, 632, and 904 ?m) were used in a 3 × 2 factorial arrangement with 2 methods of diet formulation, differing in ME value of corn: ?FIX? (value from nutrient composition table) vs. ?ESTIMATED? (estimated for each particle size using the equation developed in Exp. 1). In Exp. 2, ADFI was greater (P < 0.05) and feed efficiency was lower (P < 0.05) in the diet with GMD of 904 ?m compared to the diets with GMD of 632 or 483 ?m, but only for diet formulation by the FIX method. In the treatments with GMD of 483 ?m, gilts fed with the diet formulated by the ESTIMATED method had greater (P < 0.10) ADFI, backfat, fat area, and fat:meat ratio than gilts fed the diet formulated by the FIX method. In Exp. 3, particle size and formulation method did not affect (P > 0.10) growth performance and carcass traits of barrows. The equation developed was effective to adjust the ME value of corn, considering particle size variation. However, improvement to the proposed equation is necessary to achieve greater precision for predicting corn ME. Validation of the equation with more lots of corn of different chemical compositions and densities appears necessary to assess the efficacy of the equation regarding the variation of the other predicting variables.
650 $aMilho
650 $aNutrição animal
650 $aSuíno
653 $aEnergia metabolizável
700 1 $aZANOTTO, D. L.
700 1 $aCOLDEBELLA, A.
700 1 $aLUDKE, J. V.
773 $tJournal of Animal Science$gv. 95, p. 291-301. 2017.
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Embrapa Suínos e Aves (CNPSA) |
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Biblioteca |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
04/04/2019 |
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Data da última atualização: |
06/11/2019 |
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Tipo da produção científica: |
Boletim de Pesquisa e Desenvolvimento |
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Autoria: |
MENEZES, C. B. de; BATISTA, P. S. C.; JÚLIO, M. P. M.; TORRES, L. T.; JÚLIO, B. H. M.; PORTUGAL, A. F.; RODRIGUES, J. A. S.; PARRELLA, R. A. da C.; SCHAFFERT, R. E. |
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Afiliação: |
CICERO BESERRA DE MENEZES, CNPMS; Paulo Sérgio Cardoso Batista, Universidade Federal dos Vales do Jequitinhonha e Mucuri; Marcos Paulo Mingote Júlio, Universidade Federal de São João del-Rei; Luciane Gonçalves Torres, Universidade Federal de São João del-Rei; Bruno Henrique Mingote Julio, Universidade Federal de São João del-Rei; ARLEY FIGUEIREDO PORTUGAL, CNPMS; JOSE AVELINO SANTOS RODRIGUES, CNPMS; RAFAEL AUGUSTO DA COSTA PARRELLA, CNPMS; ROBERT EUGENE SCHAFFERT, CNPMS. |
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Título: |
Cultivares de sorgo tolerantes ao estresse hídrico em pós-florescimento. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Sete Lagoas: Embrapa Milho e Sorgo, 2019. |
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Páginas: |
19 p. |
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Série: |
(Embrapa Milho e Sorgo. Boletim de Pesquisa e Desenvolvimento, 185). |
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Idioma: |
Português |
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Conteúdo: |
O sorgo é uma cultura com potencial para o cultivo em áreas com chuvas irregulares, mal distribuídas ou inadequadas, e o cultivo de sorgo pode mitigar esses efeitos climáticos por meio do desenvolvimento de cultivares mais tolerantes. O objetivo deste trabalho foi avaliar trinta cultivares de sorgo em ambientes com e sem estresse hídrico no estádio de pós-floração. O trabalho foi realizado na Estação Experimental de Gorutuba, em Nova Porteirinha-MG, durante as safras de 2013 e 2014. O delineamento experimental utilizado foi o de blocos ao acaso, com três repetições e dois regimes hídricos (com e sem restrição hídrica). O rendimento de grãos foi avaliado. O estresse hídrico reduziu o rendimento de grãos em 50,1% na média dos dois anos de cultivo. As cultivares com melhor rendimento e estabilidade de grãos foram B.Tx635, SC720, BR012RxSC566, SC971, P898012, BR012RxCMSXS225, Lian Tang Ai e BR012RxSC549. Estas cultivares podem ser usadas como linhagem parental para híbridos tolerantes à seca ou como variedades cultivadas no Nordeste. |
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Palavras-Chave: |
Rendimento de grão; Restrição de água; Tolerância à seca. |
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Thesagro: |
Rendimento; Resistência a Seca; Sorghum Bicolor; Variedade. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/195456/1/bol-185.pdf
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Marc: |
LEADER 02020nam a2200313 a 4500
001 2107936
005 2019-11-06
008 2019 bl uuuu u0uu1 u #d
100 1 $aMENEZES, C. B. de
245 $aCultivares de sorgo tolerantes ao estresse hídrico em pós-florescimento.$h[electronic resource]
260 $aSete Lagoas: Embrapa Milho e Sorgo$c2019
300 $a19 p.
490 $a(Embrapa Milho e Sorgo. Boletim de Pesquisa e Desenvolvimento, 185).
520 $aO sorgo é uma cultura com potencial para o cultivo em áreas com chuvas irregulares, mal distribuídas ou inadequadas, e o cultivo de sorgo pode mitigar esses efeitos climáticos por meio do desenvolvimento de cultivares mais tolerantes. O objetivo deste trabalho foi avaliar trinta cultivares de sorgo em ambientes com e sem estresse hídrico no estádio de pós-floração. O trabalho foi realizado na Estação Experimental de Gorutuba, em Nova Porteirinha-MG, durante as safras de 2013 e 2014. O delineamento experimental utilizado foi o de blocos ao acaso, com três repetições e dois regimes hídricos (com e sem restrição hídrica). O rendimento de grãos foi avaliado. O estresse hídrico reduziu o rendimento de grãos em 50,1% na média dos dois anos de cultivo. As cultivares com melhor rendimento e estabilidade de grãos foram B.Tx635, SC720, BR012RxSC566, SC971, P898012, BR012RxCMSXS225, Lian Tang Ai e BR012RxSC549. Estas cultivares podem ser usadas como linhagem parental para híbridos tolerantes à seca ou como variedades cultivadas no Nordeste.
650 $aRendimento
650 $aResistência a Seca
650 $aSorghum Bicolor
650 $aVariedade
653 $aRendimento de grão
653 $aRestrição de água
653 $aTolerância à seca
700 1 $aBATISTA, P. S. C.
700 1 $aJÚLIO, M. P. M.
700 1 $aTORRES, L. T.
700 1 $aJÚLIO, B. H. M.
700 1 $aPORTUGAL, A. F.
700 1 $aRODRIGUES, J. A. S.
700 1 $aPARRELLA, R. A. da C.
700 1 $aSCHAFFERT, R. E.
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Embrapa Milho e Sorgo (CNPMS) |
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