| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Gado de Corte; Embrapa Pecuária Sudeste. |
|
Data corrente: |
13/10/2015 |
|
Data da última atualização: |
20/02/2018 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
CHAVES, A. S.; NASCIMENTO, M. L.; TULLIO, R. R.; ROSA, A. do N.; ALENCAR, M. M. de; LANNA, D. P. |
|
Afiliação: |
RYMER RAMIZ TULLIO, CPPSE; ANTONIO DO NASCIMENTO FERREIRA ROSA, CNPGC; MAURICIO MELLO DE ALENCAR, CPPSE. |
|
Título: |
Relationship of efficiency indices with performance, heart rate, oxygen consumption, blood parameters, and estimated heat production in Nellore steers. |
|
Ano de publicação: |
2015 |
|
Fonte/Imprenta: |
Journal of Animal Science, v. 93, n. 10, p. 5036?5046, October 2015 |
|
DOI: |
doi:10.2527/jas2015-9066 |
|
Idioma: |
Inglês |
|
Conteúdo: |
The objective of this study was to examine the relationship of efficiency indices with performance, heart rate, oxygen consumption, blood parameters, and estimated heat production (EHP) in Nellore steers. Eighteen steers were individually lotfed diets of 2.7 Mcal ME/kg DM for 84 d. Estimated heat production was determined using oxygen pulse (O2P) methodology, in which heart rate (HR) was monitored for 4 consecutive days. Oxygen pulse was obtained by simultaneously measuring HR and oxygen consumption during a 10- to 15-min period. Efficiency traits studied were feed efficiency (G:F) and residual feed intake (RFI) obtained by regression of DMI in relation to ADG and midtest metabolic BW (RFIREG). Alternatively, RFI was also obtained based on equations reported by the NRC?s Nutrient Requirements of Beef Cattle to estimate individual requirement and DMI (RFI calculated by the NRC [1996] equation [RFINRC]). The slope of the regression equation and its significance was used to evaluate the effect of efficiency indices (RFIREG, RFINRC, or G:F) on the traits studied. A mixed model was used considering RFIREG, RFINRC, or G:F and pen type as fixed effects and initial age as a covariate. For HR and EHP variables, day was included as a random effect. There was no relationship between efficiency indices and back fat depth measured by ultrasound or daily HR and EHP (P > 0.05). Because G:F is obtained in relation to BW, the slope of G:F was positive and significant (P < 0.05). Regardless of the method used, efficient steers had lower DMI (P < 0.05). The initial LM area was indirectly related to RFIREG and RFINRC (P < 0.05); however, the final muscle area was related to only RFINRC. Oxygen consumption per beat was not related to G:F; however, it was lower for RFIREG? and RFINRC?efficient steers, and consequently, oxygen volume (mL·min?1·kg?0.75) and O2P (μL O2·beat?1·kg?0.75) were also lower (P < 0.05). Blood parameters were not related to RFIREG and RFINRC (P > 0.05); however, G:F-efficient steers showed lower hematocrit and hemoglobin concentrations (P < 0.05). Differences in EHP between efficient and inefficient animals were not directly detected. Nevertheless, differences in oxygen consumption and O2P were detected, indicating that the O2P methodology may be useful to predict growth efficiency. MenosThe objective of this study was to examine the relationship of efficiency indices with performance, heart rate, oxygen consumption, blood parameters, and estimated heat production (EHP) in Nellore steers. Eighteen steers were individually lotfed diets of 2.7 Mcal ME/kg DM for 84 d. Estimated heat production was determined using oxygen pulse (O2P) methodology, in which heart rate (HR) was monitored for 4 consecutive days. Oxygen pulse was obtained by simultaneously measuring HR and oxygen consumption during a 10- to 15-min period. Efficiency traits studied were feed efficiency (G:F) and residual feed intake (RFI) obtained by regression of DMI in relation to ADG and midtest metabolic BW (RFIREG). Alternatively, RFI was also obtained based on equations reported by the NRC?s Nutrient Requirements of Beef Cattle to estimate individual requirement and DMI (RFI calculated by the NRC [1996] equation [RFINRC]). The slope of the regression equation and its significance was used to evaluate the effect of efficiency indices (RFIREG, RFINRC, or G:F) on the traits studied. A mixed model was used considering RFIREG, RFINRC, or G:F and pen type as fixed effects and initial age as a covariate. For HR and EHP variables, day was included as a random effect. There was no relationship between efficiency indices and back fat depth measured by ultrasound or daily HR and EHP (P > 0.05). Because G:F is obtained in relation to BW, the slope of G:F was positive and significant (P < 0.05). Regardless o... Mostrar Tudo |
|
Palavras-Chave: |
BIOENERGETIC; Bioenergética; Consumo de alimentação; Consumo de oxigênio; Eficiência alimentar dos alimentos utilização; FEED EFFICIENCY OF FEED UTILIZATION; HEAT RATE; RESIDUAL FEED INTAKE; Taxa de calor. |
|
Thesagro: |
Gado nelore; Novilho de corte. |
|
Thesaurus Nal: |
Energy metabolism; oxygen consumption. |
|
Categoria do assunto: |
--
L Ciência Animal e Produtos de Origem Animal |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/172863/1/8-Relationship-of-efficiency-indices-with-performance-heart-rate-oxygen-consumption-2015.pdf
|
|
Marc: |
LEADER 03493naa a2200349 a 4500
001 2087883
005 2018-02-20
008 2015 bl uuuu u00u1 u #d
024 7 $adoi:10.2527/jas2015-9066$2DOI
100 1 $aCHAVES, A. S.
245 $aRelationship of efficiency indices with performance, heart rate, oxygen consumption, blood parameters, and estimated heat production in Nellore steers.$h[electronic resource]
260 $c2015
520 $aThe objective of this study was to examine the relationship of efficiency indices with performance, heart rate, oxygen consumption, blood parameters, and estimated heat production (EHP) in Nellore steers. Eighteen steers were individually lotfed diets of 2.7 Mcal ME/kg DM for 84 d. Estimated heat production was determined using oxygen pulse (O2P) methodology, in which heart rate (HR) was monitored for 4 consecutive days. Oxygen pulse was obtained by simultaneously measuring HR and oxygen consumption during a 10- to 15-min period. Efficiency traits studied were feed efficiency (G:F) and residual feed intake (RFI) obtained by regression of DMI in relation to ADG and midtest metabolic BW (RFIREG). Alternatively, RFI was also obtained based on equations reported by the NRC?s Nutrient Requirements of Beef Cattle to estimate individual requirement and DMI (RFI calculated by the NRC [1996] equation [RFINRC]). The slope of the regression equation and its significance was used to evaluate the effect of efficiency indices (RFIREG, RFINRC, or G:F) on the traits studied. A mixed model was used considering RFIREG, RFINRC, or G:F and pen type as fixed effects and initial age as a covariate. For HR and EHP variables, day was included as a random effect. There was no relationship between efficiency indices and back fat depth measured by ultrasound or daily HR and EHP (P > 0.05). Because G:F is obtained in relation to BW, the slope of G:F was positive and significant (P < 0.05). Regardless of the method used, efficient steers had lower DMI (P < 0.05). The initial LM area was indirectly related to RFIREG and RFINRC (P < 0.05); however, the final muscle area was related to only RFINRC. Oxygen consumption per beat was not related to G:F; however, it was lower for RFIREG? and RFINRC?efficient steers, and consequently, oxygen volume (mL·min?1·kg?0.75) and O2P (μL O2·beat?1·kg?0.75) were also lower (P < 0.05). Blood parameters were not related to RFIREG and RFINRC (P > 0.05); however, G:F-efficient steers showed lower hematocrit and hemoglobin concentrations (P < 0.05). Differences in EHP between efficient and inefficient animals were not directly detected. Nevertheless, differences in oxygen consumption and O2P were detected, indicating that the O2P methodology may be useful to predict growth efficiency.
650 $aEnergy metabolism
650 $aoxygen consumption
650 $aGado nelore
650 $aNovilho de corte
653 $aBIOENERGETIC
653 $aBioenergética
653 $aConsumo de alimentação
653 $aConsumo de oxigênio
653 $aEficiência alimentar dos alimentos utilização
653 $aFEED EFFICIENCY OF FEED UTILIZATION
653 $aHEAT RATE
653 $aRESIDUAL FEED INTAKE
653 $aTaxa de calor
700 1 $aNASCIMENTO, M. L.
700 1 $aTULLIO, R. R.
700 1 $aROSA, A. do N.
700 1 $aALENCAR, M. M. de
700 1 $aLANNA, D. P.
773 $tJournal of Animal Science$gv. 93, n. 10, p. 5036?5046, October 2015
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Gado de Corte (CNPGC) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Agropecuária Oeste. Para informações adicionais entre em contato com cpao.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Agropecuária Oeste. |
|
Data corrente: |
24/07/2006 |
|
Data da última atualização: |
11/02/2009 |
|
Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
|
Circulação/Nível: |
-- - -- |
|
Autoria: |
SCAPIM, C. A.; SAGRILO, E.; RIMOLDI, F.; PEQUENO, M. G.; KRITSCHAL, M. V.; VIDIGAL, M. C. G.; VIDIGAL FILHO, P. S.; MAIA, R. R. |
|
Afiliação: |
Embrapa Agropecuária Oeste. |
|
Título: |
Produção de folhas e teores de massa seca em frações de cinco cultivares de mandioca, no segundo ciclo vegetativo |
|
Ano de publicação: |
2005 |
|
Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE MANDIOCA, 11., 2005, Campo Grande. Ciência e tecnologia para a raiz do Brasil: anais. Campo Grande: Governo do Estado; Dourados: Embrapa Agropecuária Oeste, 2005. |
|
Descrição Física: |
1 CD-ROM. |
|
Idioma: |
Português |
|
Thesagro: |
Mandioca. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 00786naa a2200217 a 4500
001 1253082
005 2009-02-11
008 2005 bl uuuu u00u1 u #d
100 1 $aSCAPIM, C. A.
245 $aProdução de folhas e teores de massa seca em frações de cinco cultivares de mandioca, no segundo ciclo vegetativo
260 $c2005
300 $c1 CD-ROM.
650 $aMandioca
700 1 $aSAGRILO, E.
700 1 $aRIMOLDI, F.
700 1 $aPEQUENO, M. G.
700 1 $aKRITSCHAL, M. V.
700 1 $aVIDIGAL, M. C. G.
700 1 $aVIDIGAL FILHO, P. S.
700 1 $aMAIA, R. R.
773 $tIn: CONGRESSO BRASILEIRO DE MANDIOCA, 11., 2005, Campo Grande. Ciência e tecnologia para a raiz do Brasil: anais. Campo Grande: Governo do Estado; Dourados: Embrapa Agropecuária Oeste, 2005.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Agropecuária Oeste (CPAO) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Expressão de busca inválida. Verifique!!! |
|
|
