| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Gado de Corte. |
|
Data corrente: |
07/03/2013 |
|
Data da última atualização: |
07/03/2013 |
|
Autoria: |
GOMES, R. da C.; SAINZ, R. D.; LEME, P. R. |
|
Afiliação: |
RODRIGO DA COSTA GOMES, CNPGC; Roberto Daniel Sainz, Faculdade de Zootecnia e Engenharia de Alimentos, Universidade de São Paulo.; Paulo Roberto Leme, Department of Animal Science, University of California. |
|
Título: |
Protein metabolism, feed energy partitioning, behavior patterns and plasma cortisol in Nellore steers with high and low residual feed intake. |
|
Ano de publicação: |
2013 |
|
Fonte/Imprenta: |
Revista Brasileira de Zootecnia, v.42, n.1, p.44-50, 2013. |
|
Idioma: |
Inglês |
|
Conteúdo: |
The objective was to evaluate protein turnover, nitrogen balance, feed energy partitioning, behavior patterns and plasma cortisol in Nellore (B. indicus) cattle with high and low residual feed intake (RFI = actual minus expected dry matter intake). Seventy-two Nellore steers (16 to 21 months-old, 334±19 kg initial body weight) were fed a feedlot diet for 70 days ad libitum. Daily dry matter intake (DMI) and average daily gain (ADG) were recorded individually and RFI was calculated. The 12 steers of lowest (Low-RFI, most efficient) RFI and the 12 ones of highest RFI (High-RFI, least efficient) were evaluated with respect to their behavior patterns and plasma cortisol concentration. Urine was collected for determination of daily 3-methylhistidine excretion (3MH) and myofibrillar protein breakdown rates. Urinary, gaseous and fecal energy losses were determined as well as the N retention and excretion. High-RFI steers tended to have shorter lying and idle periods and greater feeding time and plasma cortisol levels than low-RFI cattle. No RFI effects were seen for urine 3MH excretion and for rates of protein degradation and synthesis. No effects of efficiency class were observed for N excretion or N retention. No RFI effects were observed for dry matter digestibility, digestible energy (DE) and metabolizable energy (ME) content and DE/ME ratio. Methane energy losses were lower for low- compared with high-RFI steers. Protein turnover seems not to affect feed efficiency in Nellore steers. Improved RFI in Nellore steers is probably associated with lower degrees of activity and responsiveness to stress and lower losses of dietary energy as methane. MenosThe objective was to evaluate protein turnover, nitrogen balance, feed energy partitioning, behavior patterns and plasma cortisol in Nellore (B. indicus) cattle with high and low residual feed intake (RFI = actual minus expected dry matter intake). Seventy-two Nellore steers (16 to 21 months-old, 334±19 kg initial body weight) were fed a feedlot diet for 70 days ad libitum. Daily dry matter intake (DMI) and average daily gain (ADG) were recorded individually and RFI was calculated. The 12 steers of lowest (Low-RFI, most efficient) RFI and the 12 ones of highest RFI (High-RFI, least efficient) were evaluated with respect to their behavior patterns and plasma cortisol concentration. Urine was collected for determination of daily 3-methylhistidine excretion (3MH) and myofibrillar protein breakdown rates. Urinary, gaseous and fecal energy losses were determined as well as the N retention and excretion. High-RFI steers tended to have shorter lying and idle periods and greater feeding time and plasma cortisol levels than low-RFI cattle. No RFI effects were seen for urine 3MH excretion and for rates of protein degradation and synthesis. No effects of efficiency class were observed for N excretion or N retention. No RFI effects were observed for dry matter digestibility, digestible energy (DE) and metabolizable energy (ME) content and DE/ME ratio. Methane energy losses were lower for low- compared with high-RFI steers. Protein turnover seems not to affect feed efficiency in Nellore ... Mostrar Tudo |
|
Palavras-Chave: |
Bovino de corte. |
|
Thesagro: |
Nutrição Animal. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/78369/1/0000007017-Gomes-et-al-2013-RBZ.pdf
|
|
Marc: |
LEADER 02239naa a2200169 a 4500
001 1952472
005 2013-03-07
008 2013 bl uuuu u00u1 u #d
100 1 $aGOMES, R. da C.
245 $aProtein metabolism, feed energy partitioning, behavior patterns and plasma cortisol in Nellore steers with high and low residual feed intake.$h[electronic resource]
260 $c2013
520 $aThe objective was to evaluate protein turnover, nitrogen balance, feed energy partitioning, behavior patterns and plasma cortisol in Nellore (B. indicus) cattle with high and low residual feed intake (RFI = actual minus expected dry matter intake). Seventy-two Nellore steers (16 to 21 months-old, 334±19 kg initial body weight) were fed a feedlot diet for 70 days ad libitum. Daily dry matter intake (DMI) and average daily gain (ADG) were recorded individually and RFI was calculated. The 12 steers of lowest (Low-RFI, most efficient) RFI and the 12 ones of highest RFI (High-RFI, least efficient) were evaluated with respect to their behavior patterns and plasma cortisol concentration. Urine was collected for determination of daily 3-methylhistidine excretion (3MH) and myofibrillar protein breakdown rates. Urinary, gaseous and fecal energy losses were determined as well as the N retention and excretion. High-RFI steers tended to have shorter lying and idle periods and greater feeding time and plasma cortisol levels than low-RFI cattle. No RFI effects were seen for urine 3MH excretion and for rates of protein degradation and synthesis. No effects of efficiency class were observed for N excretion or N retention. No RFI effects were observed for dry matter digestibility, digestible energy (DE) and metabolizable energy (ME) content and DE/ME ratio. Methane energy losses were lower for low- compared with high-RFI steers. Protein turnover seems not to affect feed efficiency in Nellore steers. Improved RFI in Nellore steers is probably associated with lower degrees of activity and responsiveness to stress and lower losses of dietary energy as methane.
650 $aNutrição Animal
653 $aBovino de corte
700 1 $aSAINZ, R. D.
700 1 $aLEME, P. R.
773 $tRevista Brasileira de Zootecnia$gv.42, n.1, p.44-50, 2013.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Gado de Corte (CNPGC) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Meio-Norte; Embrapa Milho e Sorgo; Embrapa Unidades Centrais. |
|
Data corrente: |
26/07/2001 |
|
Data da última atualização: |
11/12/2021 |
|
Autoria: |
CARVALHO, H. W. L. de; LEAL, M. de L. da S.; CARDOSO, M. J.; SANTOS, M. X. dos; CARVALHO, B. C. L. de; TABOSA, J. N.; LIRA, M. A.; ALBUQUERQUE, M. M. |
|
Afiliação: |
HELIO WILSON LEMOS DE CARVALHO, CPATC; EMBRAPA-CNPMS. |
|
Título: |
Adaptabilidade e estabilidade de cultivares e hibridos de milho no Nordeste brasileiro no ano agricola de 1998. |
|
Ano de publicação: |
2001 |
|
Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, v. 36, n. 4, p. 637-644, 2001. |
|
Idioma: |
Português |
|
Conteúdo: |
Durante o ano agricola de 1998, na Regiao Nordeste do Brasil, foram realizados experimentos em rede, em blocos casualizados com tres repeticoes, envolvendo a avaliacao de 25 cultivares (cultivares e populacoes) e de 30 hibridos de milho em dezenove e dezesseis ambientes, respectivamente, objetivando conhecer adaptabilidade e estabilidade dessas cultivares para fins de recomendacao. Os hibridos apresentaram maiores rendimentos, em media, 21,4% mais que as cultivares. Nos ensaios envolvendo cultivares e populacoes, o hibrido Cargill 909, utilizado como testemunha, teve um rendimento superior, tanto nos ambientes desfavoraveis quanto nos favoraveis. As cultivares AL 30, BR 5028, BR 106, BR 5011, BR 5033, Sintetico Dentado, Sintetico Duro e a populacao CMS 50 expressaram boa adaptacao e estabilidade de producao no Nordeste brasileiro. Nos ensaios envolvendo hibridos, Dina 1000, Cargill 333 B, Dina 270, Braskalb XL 360, Master, AG 1051, AG 4051 e Pioneer 3041 apresentaram maior adaptacao com estabilidade de producao nos ambientes considerados. Para recomendacao especifica a ambientes favoraveis destacaram-se os hibridos AG 4051 e Pioneer X 1296 B. Apesar de nao se encontrarem hibridos com adaptação especifica a ambientes desfavoraveis, a recomendacao de materiais com maiores rendimentos nesses ambientes e de interesse para o agricultor, a exemplo do Dina 1000, Cargill 333 B e Braskalb XL 360. |
|
Palavras-Chave: |
adaptability-; Adaptacao; Adaptation; crop-yield; Cultivares; cultivars-; Genotipo-ambiente; Genotype environment interaction; genotype-environment-interaction; hybrids-; Interacao; maize-; stability-. |
|
Thesagro: |
Interação Genética; Variedade; Zea Mays. |
|
Thesaurus NAL: |
Cultivars. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/121208/1/Adaptabilidade-estabilidade.pdf
https://www.scielo.br/pdf/pab/v36n4/5145.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/188001/1/Adaptabilidade-e-estabilidade-de-cultivares-de-hibridos.pdf
|
|
Marc: |
LEADER 02576naa a2200409 a 4500
001 1489184
005 2021-12-11
008 2001 bl uuuu u00u1 u #d
100 1 $aCARVALHO, H. W. L. de
245 $aAdaptabilidade e estabilidade de cultivares e hibridos de milho no Nordeste brasileiro no ano agricola de 1998.
260 $c2001
520 $aDurante o ano agricola de 1998, na Regiao Nordeste do Brasil, foram realizados experimentos em rede, em blocos casualizados com tres repeticoes, envolvendo a avaliacao de 25 cultivares (cultivares e populacoes) e de 30 hibridos de milho em dezenove e dezesseis ambientes, respectivamente, objetivando conhecer adaptabilidade e estabilidade dessas cultivares para fins de recomendacao. Os hibridos apresentaram maiores rendimentos, em media, 21,4% mais que as cultivares. Nos ensaios envolvendo cultivares e populacoes, o hibrido Cargill 909, utilizado como testemunha, teve um rendimento superior, tanto nos ambientes desfavoraveis quanto nos favoraveis. As cultivares AL 30, BR 5028, BR 106, BR 5011, BR 5033, Sintetico Dentado, Sintetico Duro e a populacao CMS 50 expressaram boa adaptacao e estabilidade de producao no Nordeste brasileiro. Nos ensaios envolvendo hibridos, Dina 1000, Cargill 333 B, Dina 270, Braskalb XL 360, Master, AG 1051, AG 4051 e Pioneer 3041 apresentaram maior adaptacao com estabilidade de producao nos ambientes considerados. Para recomendacao especifica a ambientes favoraveis destacaram-se os hibridos AG 4051 e Pioneer X 1296 B. Apesar de nao se encontrarem hibridos com adaptação especifica a ambientes desfavoraveis, a recomendacao de materiais com maiores rendimentos nesses ambientes e de interesse para o agricultor, a exemplo do Dina 1000, Cargill 333 B e Braskalb XL 360.
650 $aCultivars
650 $aInteração Genética
650 $aVariedade
650 $aZea Mays
653 $aadaptability-
653 $aAdaptacao
653 $aAdaptation
653 $acrop-yield
653 $aCultivares
653 $acultivars-
653 $aGenotipo-ambiente
653 $aGenotype environment interaction
653 $agenotype-environment-interaction
653 $ahybrids-
653 $aInteracao
653 $amaize-
653 $astability-
700 1 $aLEAL, M. de L. da S.
700 1 $aCARDOSO, M. J.
700 1 $aSANTOS, M. X. dos
700 1 $aCARVALHO, B. C. L. de
700 1 $aTABOSA, J. N.
700 1 $aLIRA, M. A.
700 1 $aALBUQUERQUE, M. M.
773 $tPesquisa Agropecuária Brasileira, Brasília$gv. 36, n. 4, p. 637-644, 2001.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
