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Registro Completo |
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
26/09/2022 |
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Data da última atualização: |
26/09/2022 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
PAIVA, M. I. de; REIS, N. J. C.; PASCHOAL, J. J.; FERNANDES, L. O.; MACIEL, G. A.; BRAGA, G. J. |
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Afiliação: |
MÁRCIA INGRID DE PAIVA; NÍNIVE JHORS CARNEIRO REIS; JULIANA JORGE PASCHOAL; LEONARDO OLIVEIRA FERNANDES; GIOVANA ALCANTARA MACIEL, CPAC; GUSTAVO JOSE BRAGA, CPAC. |
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Título: |
Growth efficiency of Nellore cattle in the growing and finishing phases. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
In: REUNIÃO DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 57., 2022, Campinas. Tropical animal science and pratice to feed the planet: proceedings. Brasília, DF: SBZ; São Carlos, SP: Embrapa Pecuária Sudeste, 2022. |
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Páginas: |
p. 134 |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this work was to evaluate the growth efficiency of Nellore young bulls in the growing and fattening phases using the Kleiber index (KI). The experiment was carried out in the ABCZ experimental farm Orestes Prata Tibery Júnior, located at the MG-427 highway, Uberaba, MG, Brazil (lat. 19º 47´ 68´´ S; long. 47º 58' 50'' W, 788 m asl). The local climate is tropical semi-humid presenting mean air temperature of 21.4°C, annual rainfall of 1,684 mm and relative humidity of 71.4%. Young bulls (n = 101) were submitted to 280 days of evaluation under grazing in Brachiaria brizantha cv. BRS Paiaguás pastures, 140 days during the wet season and 140 days during the dry season, measuring the weight of the animals and the average daily live weight gain (ADG). After this period, in the feedlot, the same animals were maintained in pens with automated troughs for 109 days to measure live weight and individual intake. It was estimated the feed efficiency (FE), the residual feed intake (RFI), the feed intake (FI), the dry matter intake (DMI) and the KI, dividing the average daily gain (ADG) by the average metabolic live weight (AMLW). Data were analyzed with Pearson's correlation at P < 0.05 using the software Action. Correlated data were observed for Kleiber index (KI) and FI (0.62), and for KI and ADG (0.86). The correlation between KI and gross FE was significant (P < 0.01) and of strong magnitude, with a value of 0.79. The KI did not correlated with RFI (0.012), but correlated negatively with FI (-0.80). There was no correlation between ADG, AMLW and KI, when the values obtained from cattle maintained at different phases were analyzed. Kleiber index can be used as a tool for animal selection in the feedlot, as it has high correlation with ADG and FE. However, studies on the Kleiber Index are still needed to validate this hypothesis, especially with regard to the selection of animals based only on the efficiency presented in confinement and how it will reflect on animals kept under the grazing system that is the most used in this country. MenosThe objective of this work was to evaluate the growth efficiency of Nellore young bulls in the growing and fattening phases using the Kleiber index (KI). The experiment was carried out in the ABCZ experimental farm Orestes Prata Tibery Júnior, located at the MG-427 highway, Uberaba, MG, Brazil (lat. 19º 47´ 68´´ S; long. 47º 58' 50'' W, 788 m asl). The local climate is tropical semi-humid presenting mean air temperature of 21.4°C, annual rainfall of 1,684 mm and relative humidity of 71.4%. Young bulls (n = 101) were submitted to 280 days of evaluation under grazing in Brachiaria brizantha cv. BRS Paiaguás pastures, 140 days during the wet season and 140 days during the dry season, measuring the weight of the animals and the average daily live weight gain (ADG). After this period, in the feedlot, the same animals were maintained in pens with automated troughs for 109 days to measure live weight and individual intake. It was estimated the feed efficiency (FE), the residual feed intake (RFI), the feed intake (FI), the dry matter intake (DMI) and the KI, dividing the average daily gain (ADG) by the average metabolic live weight (AMLW). Data were analyzed with Pearson's correlation at P < 0.05 using the software Action. Correlated data were observed for Kleiber index (KI) and FI (0.62), and for KI and ADG (0.86). The correlation between KI and gross FE was significant (P < 0.01) and of strong magnitude, with a value of 0.79. The KI did not correlated with RFI (0.012), but correla... Mostrar Tudo |
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Thesagro: |
Bovino. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1146834/1/Giovana-Maciel-Growth-efficiency-of-Nellore.pdf
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Marc: |
LEADER 02796nam a2200193 a 4500
001 2146834
005 2022-09-26
008 2022 bl uuuu u00u1 u #d
100 1 $aPAIVA, M. I. de
245 $aGrowth efficiency of Nellore cattle in the growing and finishing phases.$h[electronic resource]
260 $aIn: REUNIÃO DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 57., 2022, Campinas. Tropical animal science and pratice to feed the planet: proceedings. Brasília, DF: SBZ; São Carlos, SP: Embrapa Pecuária Sudeste$c2022
300 $ap. 134
520 $aThe objective of this work was to evaluate the growth efficiency of Nellore young bulls in the growing and fattening phases using the Kleiber index (KI). The experiment was carried out in the ABCZ experimental farm Orestes Prata Tibery Júnior, located at the MG-427 highway, Uberaba, MG, Brazil (lat. 19º 47´ 68´´ S; long. 47º 58' 50'' W, 788 m asl). The local climate is tropical semi-humid presenting mean air temperature of 21.4°C, annual rainfall of 1,684 mm and relative humidity of 71.4%. Young bulls (n = 101) were submitted to 280 days of evaluation under grazing in Brachiaria brizantha cv. BRS Paiaguás pastures, 140 days during the wet season and 140 days during the dry season, measuring the weight of the animals and the average daily live weight gain (ADG). After this period, in the feedlot, the same animals were maintained in pens with automated troughs for 109 days to measure live weight and individual intake. It was estimated the feed efficiency (FE), the residual feed intake (RFI), the feed intake (FI), the dry matter intake (DMI) and the KI, dividing the average daily gain (ADG) by the average metabolic live weight (AMLW). Data were analyzed with Pearson's correlation at P < 0.05 using the software Action. Correlated data were observed for Kleiber index (KI) and FI (0.62), and for KI and ADG (0.86). The correlation between KI and gross FE was significant (P < 0.01) and of strong magnitude, with a value of 0.79. The KI did not correlated with RFI (0.012), but correlated negatively with FI (-0.80). There was no correlation between ADG, AMLW and KI, when the values obtained from cattle maintained at different phases were analyzed. Kleiber index can be used as a tool for animal selection in the feedlot, as it has high correlation with ADG and FE. However, studies on the Kleiber Index are still needed to validate this hypothesis, especially with regard to the selection of animals based only on the efficiency presented in confinement and how it will reflect on animals kept under the grazing system that is the most used in this country.
650 $aBovino
700 1 $aREIS, N. J. C.
700 1 $aPASCHOAL, J. J.
700 1 $aFERNANDES, L. O.
700 1 $aMACIEL, G. A.
700 1 $aBRAGA, G. J.
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Registro original: |
Embrapa Cerrados (CPAC) |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura; Embrapa Milho e Sorgo; Embrapa Tabuleiros Costeiros. |
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Data corrente: |
29/03/2016 |
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Data da última atualização: |
13/04/2017 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
CARVALHO, L. M. de; CARVALHO, H. W. L. de; OLIVEIRA, I. R. de; RANGEL, M. A. S.; SANTOS, V. da S. |
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Afiliação: |
LUCIANA MARQUES DE CARVALHO, CPATC; HELIO WILSON LEMOS DE CARVALHO, CPATC; IVENIO RUBENS DE OLIVEIRA, CNPMS; MARCO ANTONIO SEDREZ RANGEL, CNPMF; VANDERLEI DA SILVA SANTOS, CNPMF. |
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Título: |
Productivity and drought tolerance of cassava cultivars in the Coastal Tablelands of Northeastern Brazil. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Ciência Rural, Santa Maria, v. 46, n. 5, p. 796-801, maio, 2016. |
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Idioma: |
Inglês
Português |
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Conteúdo: |
Ten cassava cultivars were grown in the field and evaluated to identify the most adapted to the Coastal Tablelands of northeast Brazil. The cultivars showed differences in proline and chlorophyll contents, plant height, number of leaves and branches, canopy area and root production, however they did not differ on photosynthetic rates. Cultivars 'Tianguá' and '9783-13' presented lower root yield, whereas 'BRS Tapioqueira' and 'Irará' had the highest root yield. Few leaves coupled with the highest water use efficiency for CO2 assimilation was found in 'BRS Kiriris' in contrast to 'BRS Jarina' and '9783-13'. 'BRS Caipira' had high proline content in both Umbaúba and Frei Paulo areas, traits usually associated to drought tolerance, that contribute to the adaptation. It is also important to consider that cultivar 'BRS Caipira' was the first to present increase in chlorophyll content after extended period of drought, that indicates a faster recovery after dry season. Furthermore, the results indicated that the most adapted cultivars for cultivation in this area are 'Irará', 'BRS Tapioqueira', 'BRS Kiriris' and 'BRS Caipira'. |
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Thesagro: |
Clorofila; Fotossíntese; Mandioca; Manihot esculenta. |
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Thesaurus NAL: |
Cassava; Chlorophyll; Photosynthesis. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/141740/1/Luciana-Marques.pdf
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Marc: |
LEADER 01899naa a2200253 a 4500
001 2041979
005 2017-04-13
008 2016 bl uuuu u00u1 u #d
100 1 $aCARVALHO, L. M. de
245 $aProductivity and drought tolerance of cassava cultivars in the Coastal Tablelands of Northeastern Brazil.$h[electronic resource]
260 $c2016
520 $aTen cassava cultivars were grown in the field and evaluated to identify the most adapted to the Coastal Tablelands of northeast Brazil. The cultivars showed differences in proline and chlorophyll contents, plant height, number of leaves and branches, canopy area and root production, however they did not differ on photosynthetic rates. Cultivars 'Tianguá' and '9783-13' presented lower root yield, whereas 'BRS Tapioqueira' and 'Irará' had the highest root yield. Few leaves coupled with the highest water use efficiency for CO2 assimilation was found in 'BRS Kiriris' in contrast to 'BRS Jarina' and '9783-13'. 'BRS Caipira' had high proline content in both Umbaúba and Frei Paulo areas, traits usually associated to drought tolerance, that contribute to the adaptation. It is also important to consider that cultivar 'BRS Caipira' was the first to present increase in chlorophyll content after extended period of drought, that indicates a faster recovery after dry season. Furthermore, the results indicated that the most adapted cultivars for cultivation in this area are 'Irará', 'BRS Tapioqueira', 'BRS Kiriris' and 'BRS Caipira'.
650 $aCassava
650 $aChlorophyll
650 $aPhotosynthesis
650 $aClorofila
650 $aFotossíntese
650 $aMandioca
650 $aManihot esculenta
700 1 $aCARVALHO, H. W. L. de
700 1 $aOLIVEIRA, I. R. de
700 1 $aRANGEL, M. A. S.
700 1 $aSANTOS, V. da S.
773 $tCiência Rural, Santa Maria$gv. 46, n. 5, p. 796-801, maio, 2016.
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Embrapa Tabuleiros Costeiros (CPATC) |
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