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| Registros recuperados : 220 | |
| 161. |  | SANTOS, A. R. dos; ALMEIDA, U. O. de; RAMALHO, A. R.; FERREIRA, F. M.; VIEIRA JUNIOR, J. R.; FERNANDES, C. de F.; ROCHA, R. B. Quantificação da variabilidade genética entre procedências e famílias de pinhão manso (Jatropha curcas L.). In: CONGRESSO NACIONAL DE BOTÂNICA, 61., 2010, Manaus. Diversidade vegetal brasileira: conhecimento, conservação e uso. Manaus: SBB, 2010.| Biblioteca(s): Embrapa Rondônia. |
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| 162. | | BASTOS, T. X.; SÁ, T. D. de A.; SANTOS, A. R. dos; OLIVEIRA, R. P. de; PACHECO, N. A.; KOBAYASHI, L. T. Flutuação das chuvas no nordeste paraense e sua implicação para o calendário agrícola. In: CONGRESSO BRASILEIRO DE AGROMETEOROLOGIA, 8., 1993, Porto Alegre. Resumos. Santa Maria: UFSM, 1993. p. 13.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 163. | | SILVA, D. O. M. da; LIMA, A. C. M.; SILVA, J. A.; SANTOS, A. R. L. dos; BASSOI, L. H.; SILVA, D. J. Fertirrigação e monitoramento nutricional durante a formação do parreiral de videiras Syrah no Submédio do Vale do São Francisco. In: JORNADA DE INICIAÇÃO CIENTÍFICA DA EMBRAPA SEMIÁRIDO, 5., 2010, Petrolina. Anais... Petrolina: Embrapa Semiárido, 2010. p. 55-61. (Embrapa Semiárido. Documentos, 228.).| Biblioteca(s): Embrapa Semiárido. |
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| 164. | | SANTANA, A. S.; SANTOS, V. de J.; SANTOS, A. R. C. dos; SANTANA, G. L. de; SANTOS, A. da S. dos; TAVARES, E. D.; CURADO, F. F. Experiências de transição agroecológica no Assentamento Santa Maria das Lages, Poço Verde, SE. In: CONGRESSO NACIONAL RESIDÊNCIA AGRÁRIA, 1., 2015, Brasília. Universidade, movimentos sociais e produção de conhecimento no campo brasileiro: anais. Santa Maria, RS: UFSM, 2015. p. 103 - 110| Biblioteca(s): Embrapa Tabuleiros Costeiros. |
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| 165. | | SANTOS, A. R. dos; ALMEIDA, U. O. de; SILVA, F. C. G. da; RIBEIRO, R. da S.; RAMALHO, A. R.; MILITÃO, J. L. T. S.; ROCHA, R. B. Avaliação da variabilidade do teor de óleo de matrizes de pinhão manso (Jatropha curcas L.). In: CONGRESSO NACIONAL DE BOTÂNICA, 61., 2010, Manaus. Diversidade vegetal brasileira: conhecimento, conservação e uso. Manaus: SBB, 2010.| Biblioteca(s): Embrapa Rondônia. |
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| 166. | | SANTOS, A. R. dos; BOAVENTURA, G. R.; PINELLI, M. P.; SILVA, J. E. da; DIAS, R. P.; RAMAGEM, R. D.; MEYER, S. T. Avaliacao da concentracao de metais em composto de lixo urbano processado no Distrito Federal. In: CONGRESSO BRASILEIRO DE CIENCIA DO SOLO, 25., 1995, Vicosa, MG. O solo nos grandes dominios morfoclimaticos do Brasil e o desenvolvimento sustentado: resumos expandidos. Vicosa: SBCS, 1995. v.4. p.2388-2389.| Biblioteca(s): Embrapa Cerrados. |
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| 167. | | SANTOS, A. R. dos; BOAVENTURA, G. R.; PINELLI, P.; SILVA, J. E. da; DIAS, R. P.; RAMAGEM, R. D.; MEYER, S. T. Avaliação da concentração de metais em composto de lixo urbano processado no Distrito Federal. IN: CONGRESSO BRASILEIRO DE CIÊNÇIA DO SOLO, 25., Viçosa, MG. Resumos expandidos. Viçosa: UFV, 1995. v.4, p. 2388-2389.| Biblioteca(s): Embrapa Tabuleiros Costeiros. |
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| 170. | | MUNIZ, A. V. C. da S.; MUNIZ, E. N.; FEITOSA, R. B.; ALMEIDA, C. S.; SANTOS, J. S.; SANTOS, A. R. F. dos. Caracterização molecular de mangabeiras nativas. In: CONGRESSO BRASILEIRO DE FISIOLOGIA VEGETAL, 12., 2009, Fortaleza. Desafios para produção de alimentos e bioenergia. Fortaleza: SBFV: UFC: Embrapa Agroindústria Tropical, 2009. 1 CD-ROM. Resumo 25.| Biblioteca(s): Embrapa Tabuleiros Costeiros. |
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| 171. | | SANTOS, A. R. A. dos; SOARES FILHO, W. dos S.; SOUZA, F. V. D.; GIRARDI, E. A.; SOUZA, E. H. de. Caracterização morfológica e avaliação do vírus da tristeza em híbridos ornamentais de citros. In: JORNADA CIENTÍFICA EMBRAPA MANDIOCA E FRUTICULTURA, 8., 2014, Cruz das Almas, Ba. Pesquisa: despertando mentes para a inovação e transformando o futuro: [anais]. Cruz das Almas, BA, Embrapa Mandioca e Fruticultura, 2014.| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 172. | | FADINI, M.; SANTOS, A. R. A. dos; SOARES FILHO, W. dos S.; SOUZA, F. V. D.; GIRARDI, E. A.; PASSOS, O. S. Caracterização de germoplasma de citros para fins ornamentais. In: JORNADA CIENTÍFICA EMBRAPA MANDIOCA E FRUTICULTURA TROPICAL, 7., 2013, Cruz das Almas. Anais... Cruz das Almas: Embrapa Mandioca e Fruticultura, 2013. Publicação online.| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| 173. | | MUNIZ, A. V. C. da S.; PINHEIRO, L. R.; DINIZ, L. E. C.; LEDO, A. da S.; SANTOS, A. R. F. Variabilidade genética de Cattleya labiata em população natural localizada em Maranguape, Ceará. In: CONGRESSO BRASILEIRO DE FLORICULTURA E PLANTAS ORNAMENTAIS, 18.; CONGRESSO BRASILEIRO DE CULTURA DE TECIDOS DE PLANTAS, 5., 2011, Joinville. Resumos... Joinville: Sociedade Brasileira de Plantas Ornamentais e Associação Brasileira de Cultura de Tecidos de Plantas, 2011.| Biblioteca(s): Embrapa Tabuleiros Costeiros. |
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| 174. | | ANDRADAE, L. N. T.; NUNES, M. U. C.; PINHEIRO, L. R.; SANTOS, A. R. F.; MUNIZ, A. V. C. da S.; AMORIM, J. A.; FEITOSA, R. B. Variabilidade genética entre acessos de batata-doce de película e polpa com cores variadas. In: CONGRESSO BRASILEIRO DE OLERICULTURA, 51., 2011, Viçosa, MG. Hortaliças: da origem aos desafios da saúde e sustentabilidade: anais... Viçosa, MG: ABH, 2011.| Biblioteca(s): Embrapa Tabuleiros Costeiros. |
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| 175. | | MUNIZ, A. V. C. da S.; RANGEL, J. H. de A.; MUNIZ, E. N.; RAGEL, S.; SANTOS, A. R. F. dos; ARAGÃO, W. M. Variabilidade genética entre acessos de jureminha (Desmanthus virgatus (L.) Wild). In: CONGRESSO NORDESTINO DE PRODUÇÃO ANIMAL, 5.; SIMPÓSIO NORDESTINO DE ALIMENTAÇÃO DE RUMINANTES, 11.; SIMPÓSIO SERGIPANO DE PRODUÇÃO ANIMAL, 1. 2008, Aracaju. Anais... Aracaju: Sociedade Nordestina de Produção Animal; Embrapa Tabuleiros Costeiros, 2008. Forragicultura. 1 CD-ROM.| Biblioteca(s): Embrapa Tabuleiros Costeiros. |
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| 176. | | SILVA, A. V. C. da; GONÇALVES, L. O.; GÍOS, I. B.; SANTOS, A. R. F. dos; MUNIZ, E. N.; ANDRADE, L. N. T.; MATOS, I. A.; NARAIN, N. Variabilidade genética entre clones de cajueiro. IN: CONGRESSO BRASILEIRO DE FRUTICULTURA, 20.; ANNUAL MEETING OF THE INTERAMERICAN SOCIETY FOR TROPICAL HOTRICULTURE, 54., 2008, Vitória. Frutas para todos: estratégias, tecnologias e visão sustentável. Vitória: Sociedade Brasileira de Fruticultura, 2008. Melhoramento genético - bioestatistica. 1 CD-ROM.| Biblioteca(s): Embrapa Tabuleiros Costeiros. |
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| 177. | | MATOS. I. A.; SILVA, A. V. C. da; GÓIS, I. B.; SANTOS, A. R. F. dos; GONÇALVES, L. O.; ANDRADE, L. N. T. Variabilidade genética entre vinte clones de cajueiro. In: ENCONTRO DE INICIAÇÃO CIENTÍFICA, 18; ENCONTRO DE PÓS-GRADUAÇÃO, 4., 2008, São Cristóvão. Anais... São Cristóvão: UFS, 2008. Ciências agrárias. 1 CD-ROM.| Biblioteca(s): Embrapa Tabuleiros Costeiros. |
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| 178. | | SILVA, J. E. da; MEYER, S. T.; RESCK, D. V. S.; MIRANDA, L. N. de; RAMAGEM, R. D.; SANTOS, A. R. dos. Uso do lodo de esgoto como fonte de fosforo e nitrogenio para milho. In: CONGRESSO BRASILEIRO DE CIENCIA DO SOLO, 25., 1995, Vicosa, MG. O solo nos grandes dominios morfoclimaticos do Brasil e o desenvolvimento sustentado: resumos expandidos. Vicosa: SBCS, 1995. v.4. p.2276-2278.| Biblioteca(s): Embrapa Cerrados; Embrapa Tabuleiros Costeiros. |
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| 180. | | CARNEIRO, M. M. L. C.; SAMPAIO, A. H. R; SOUZA, E. S.; SILVA, A. V. O.; SANTOS, A. R.; COELHO FILHO, M. A. Stomatal density and leaf turgor pressure in Tahiti lime under water deficit In: BRAZILIAN CONGRESS OF PLANT PHYSIOLOGY, 15.; BRAZILIAN-ISRAELI PLANT SCIENCES CONFERENCE, 1., 2015, Foz do Iguaçu. Abstracts... Foz do Iguaçu: Sociedade Brasileira de Fisiologia Vegetal, 2015.| Biblioteca(s): Embrapa Mandioca e Fruticultura. |
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| Registros recuperados : 220 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
16/10/2023 |
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Data da última atualização: |
22/01/2024 |
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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: |
MARCONDES, M. I.; PROVAZZI, F. P.; SILVESTRE, T.; SILVA, A. L.; VALADARES FILHO, S. C.; CAMPOS, M. M.; MACHADO, F. S.; ROTTA, P. P. |
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Afiliação: |
Washington State University; Universidade Federal de Viçosa; Washington State University; Universidade Federal de Viçosa; VALADARES FILHO, Universidade Federal de Viçosa; MARIANA MAGALHAES CAMPOS, CNPGL; FERNANDA SAMARINI MACHADO, CNPGL; Universidade Federal de Viçosa. |
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Título: |
Protein requirements for pregnant dairy cows. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Journal of Dairy Science, v. 106, p. 8821-8834, 2023. |
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DOI: |
https://doi.org/10.3168/jds.2023-23321 |
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Idioma: |
Inglês |
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Conteúdo: |
We aimed to estimate the protein requirements of pregnant Holstein × Gyr cows. Sixty-one Holstein × Gyr (HG) cows were used, with an average initial BW of 480 ± 10.1 kg and 5 ± 0.5 yrs of age. Cows were divided into 3 groups: pregnant (n = 43), non-pregnant (n = 12), and baseline (n = 6). Baseline animals were slaughtered before starting the experiment to estimate the initial body composition of the remaining animals. Pregnant and non-pregnant cows received 2 diets: maintenance and ad libitum. Pregnant cows were slaughtered at 139, 199, 241, and 268 gestation days (GD). First, we used data only from non-pregnant cows to determine the requirements for maintenance and growth in adult cows. The requirements of metabolizable protein for maintenance (MPm; g/EBW0.75/d) were estimated using a linear regression between the metabolizable protein intake (MPI, g/d) and average daily gain (g/d), and the MPm was defined as the intercept divided by the average BW0.75. Net protein requirements for gain (NPg; g/d) were estimated by the first derivative of the allometric equation between final crude protein (CP) in the body (kg) and the final EBW (kg). The efficiency of use of metabolizable protein for gain (k) was calculated from the regression between the retained protein (g/EBW0.75/d) and the MPI (g/EBW0.75/d), and k was the slope of this regression. The MPI was estimated by combining microbial protein synthesis (purine derivatives) with the digestible rumen undegradable protein [(total protein intake minus RDP) × intestinal digestibility]. Second, an exponential model was used to fit the protein accumulation in the gestational components in the function of GD. The first derivative of that model was considered the net requirement for gestation (NPgest). The efficiency of protein utilization for gestation (kgest) was calculated by the iterative method using the equation: ? = MPI - (MPm + NPg/kg + NPgest/kgest). The iteration was performed aiming at a zero deviation between observed MPI and MP estimated by the requirements determined herein. We obtained a value of 3.88 g/EBW0.75/d for MPm. The estimation of NPg can be calculated according to the following equation: NPg = 0.716 × (EBWopen-0.308) × EBGcorrected, where EBWopen is the empty BW (kg) for non-pregnant animals and EBGcorrected is the empty body gain (kg/d) corrected for the gestational component. The k was determined as 0.347. The net protein requirements for gestation (NPgest) were determined as NPgest (g/d) = 0.0008722 × exp(0.01784 × GD) × (calfweight/35). The efficiency of using metabolizable protein for gestation (kgest) was 0.625. It is important to highlight that different methods of MP estimates should not be mixed and that the proposed method requires the estimate of microbial protein (estimate it via urinary estimates) and might be a limitation for practical application. In conclusion, new studies should be conducted to validate our results and the methodology adopted to determine protein requirements for pregnancy in dairy cows. Due to the pattern of protein accumulation in the gestational components, we suggest that exponential model to describe protein requirements for pregnancy for dairy cows. MenosWe aimed to estimate the protein requirements of pregnant Holstein × Gyr cows. Sixty-one Holstein × Gyr (HG) cows were used, with an average initial BW of 480 ± 10.1 kg and 5 ± 0.5 yrs of age. Cows were divided into 3 groups: pregnant (n = 43), non-pregnant (n = 12), and baseline (n = 6). Baseline animals were slaughtered before starting the experiment to estimate the initial body composition of the remaining animals. Pregnant and non-pregnant cows received 2 diets: maintenance and ad libitum. Pregnant cows were slaughtered at 139, 199, 241, and 268 gestation days (GD). First, we used data only from non-pregnant cows to determine the requirements for maintenance and growth in adult cows. The requirements of metabolizable protein for maintenance (MPm; g/EBW0.75/d) were estimated using a linear regression between the metabolizable protein intake (MPI, g/d) and average daily gain (g/d), and the MPm was defined as the intercept divided by the average BW0.75. Net protein requirements for gain (NPg; g/d) were estimated by the first derivative of the allometric equation between final crude protein (CP) in the body (kg) and the final EBW (kg). The efficiency of use of metabolizable protein for gain (k) was calculated from the regression between the retained protein (g/EBW0.75/d) and the MPI (g/EBW0.75/d), and k was the slope of this regression. The MPI was estimated by combining microbial protein synthesis (purine derivatives) with the digestible rumen undegradable protein [(total p... Mostrar Tudo |
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Thesagro: |
Bovino; Gado Leiteiro; Período de Gestação; Proteína; Vaca Leiteira. |
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Thesaurus NAL: |
Gestation period; Holstein; Pregnancy. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/260912/1/Protein-requirements-for-pregnant-dairy-cows.pdf
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Marc: |
LEADER 04078naa a2200313 a 4500
001 2157260
005 2024-01-22
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.3168/jds.2023-23321$2DOI
100 1 $aMARCONDES, M. I.
245 $aProtein requirements for pregnant dairy cows.$h[electronic resource]
260 $c2023
520 $aWe aimed to estimate the protein requirements of pregnant Holstein × Gyr cows. Sixty-one Holstein × Gyr (HG) cows were used, with an average initial BW of 480 ± 10.1 kg and 5 ± 0.5 yrs of age. Cows were divided into 3 groups: pregnant (n = 43), non-pregnant (n = 12), and baseline (n = 6). Baseline animals were slaughtered before starting the experiment to estimate the initial body composition of the remaining animals. Pregnant and non-pregnant cows received 2 diets: maintenance and ad libitum. Pregnant cows were slaughtered at 139, 199, 241, and 268 gestation days (GD). First, we used data only from non-pregnant cows to determine the requirements for maintenance and growth in adult cows. The requirements of metabolizable protein for maintenance (MPm; g/EBW0.75/d) were estimated using a linear regression between the metabolizable protein intake (MPI, g/d) and average daily gain (g/d), and the MPm was defined as the intercept divided by the average BW0.75. Net protein requirements for gain (NPg; g/d) were estimated by the first derivative of the allometric equation between final crude protein (CP) in the body (kg) and the final EBW (kg). The efficiency of use of metabolizable protein for gain (k) was calculated from the regression between the retained protein (g/EBW0.75/d) and the MPI (g/EBW0.75/d), and k was the slope of this regression. The MPI was estimated by combining microbial protein synthesis (purine derivatives) with the digestible rumen undegradable protein [(total protein intake minus RDP) × intestinal digestibility]. Second, an exponential model was used to fit the protein accumulation in the gestational components in the function of GD. The first derivative of that model was considered the net requirement for gestation (NPgest). The efficiency of protein utilization for gestation (kgest) was calculated by the iterative method using the equation: ? = MPI - (MPm + NPg/kg + NPgest/kgest). The iteration was performed aiming at a zero deviation between observed MPI and MP estimated by the requirements determined herein. We obtained a value of 3.88 g/EBW0.75/d for MPm. The estimation of NPg can be calculated according to the following equation: NPg = 0.716 × (EBWopen-0.308) × EBGcorrected, where EBWopen is the empty BW (kg) for non-pregnant animals and EBGcorrected is the empty body gain (kg/d) corrected for the gestational component. The k was determined as 0.347. The net protein requirements for gestation (NPgest) were determined as NPgest (g/d) = 0.0008722 × exp(0.01784 × GD) × (calfweight/35). The efficiency of using metabolizable protein for gestation (kgest) was 0.625. It is important to highlight that different methods of MP estimates should not be mixed and that the proposed method requires the estimate of microbial protein (estimate it via urinary estimates) and might be a limitation for practical application. In conclusion, new studies should be conducted to validate our results and the methodology adopted to determine protein requirements for pregnancy in dairy cows. Due to the pattern of protein accumulation in the gestational components, we suggest that exponential model to describe protein requirements for pregnancy for dairy cows.
650 $aGestation period
650 $aHolstein
650 $aPregnancy
650 $aBovino
650 $aGado Leiteiro
650 $aPeríodo de Gestação
650 $aProteína
650 $aVaca Leiteira
700 1 $aPROVAZZI, F. P.
700 1 $aSILVESTRE, T.
700 1 $aSILVA, A. L.
700 1 $aVALADARES FILHO, S. C.
700 1 $aCAMPOS, M. M.
700 1 $aMACHADO, F. S.
700 1 $aROTTA, P. P.
773 $tJournal of Dairy Science$gv. 106, p. 8821-8834, 2023.
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