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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pecuária Sul. Para informações adicionais entre em contato com cppsul.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sul. |
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Data corrente: |
31/07/2019 |
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Data da última atualização: |
08/10/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SIMÕES, M. R. S.; LEAL, J. J. B.; MINHO, A. P.; GULIAS GOMES, C. C.; MACNEIL, M. D.; COSTA, R. F.; JUNQUEIRA, V. S.; SCHMIDT, P. I.; CARDOSO, F. F.; BOLIGON, A. A.; YOKOO, M. J. I. |
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Afiliação: |
Michele R. S. Simões, UFPEL; JOAL JOSE BRAZZALE LEAL, CPPSUL; ALESSANDRO PELEGRINE MINHO, CPPSE; CLAUDIA CRISTINA GULIAS GOMES, CPPSUL; Michael D. MacNeil, University of the Free State; Rodrigo F. Costa, UFPEL; Vinícius S. Junqueira, UFV; Patrícia I. Schmidt, UFPEL; FERNANDO FLORES CARDOSO, CPPSUL; Arione A. Boligon, UFPEL; MARCOS JUN ITI YOKOO, CPPSUL. |
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Título: |
Breeding objectives of Brangus cattle in Brazil. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Journal of Animal Breeding and Genetics, v. 137, n. 2, p. 177-188, Mar. 2020. |
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DOI: |
10.1111/jbg.12415 |
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Idioma: |
Inglês |
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Conteúdo: |
Our goal was to define a breeding objective for Brangus beef cattle in Brazil. Bioeconomic models were produced and used to estimate economic values (EVs). The scenarios simulated were typical full-cycle beef production systems that are used in tropical and subtropical regions. The breeding objective contained pregnancy rate (PR), warm carcass weight (WCW), mature cow weight (MCW), number of nematode eggs per gram of faeces (EPG) and tick count (TICK). Two models were used in series to estimate the EV. A deterministic model was used to simulate effects of PR, WCW and MCW on profitability with a constant parasite load. Subsequently, stochastic models were used to estimate economic values for TICK and EPG as consequences of their environmental effects on weight gains, mortality and health costs. The EV of PR, WCW, MCW, EPG and TICK, was US$1.59, US$2.11, -US$0.24, -US$5.35 and -US$20.88, respectively. Results indicate positive emphasis should be placed on PR (12.49%) and WCW (65.07%) with negative emphasis on MCW (13.92%), EPG (2.77%) and TICK (5.75%). In comparison with the indexes usually used, these results suggest a reformulation in the selection indexes of the beef production system in tropical and subtropical regions in order to obtain greater profitability. |
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Palavras-Chave: |
Gado Brangus. |
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Thesagro: |
Bovino; Bovinocultura; Gado de Corte; Seleção. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 02149naa a2200313 a 4500
001 2111027
005 2020-10-08
008 2020 bl uuuu u00u1 u #d
024 7 $a10.1111/jbg.12415$2DOI
100 1 $aSIMÕES, M. R. S.
245 $aBreeding objectives of Brangus cattle in Brazil.$h[electronic resource]
260 $c2020
520 $aOur goal was to define a breeding objective for Brangus beef cattle in Brazil. Bioeconomic models were produced and used to estimate economic values (EVs). The scenarios simulated were typical full-cycle beef production systems that are used in tropical and subtropical regions. The breeding objective contained pregnancy rate (PR), warm carcass weight (WCW), mature cow weight (MCW), number of nematode eggs per gram of faeces (EPG) and tick count (TICK). Two models were used in series to estimate the EV. A deterministic model was used to simulate effects of PR, WCW and MCW on profitability with a constant parasite load. Subsequently, stochastic models were used to estimate economic values for TICK and EPG as consequences of their environmental effects on weight gains, mortality and health costs. The EV of PR, WCW, MCW, EPG and TICK, was US$1.59, US$2.11, -US$0.24, -US$5.35 and -US$20.88, respectively. Results indicate positive emphasis should be placed on PR (12.49%) and WCW (65.07%) with negative emphasis on MCW (13.92%), EPG (2.77%) and TICK (5.75%). In comparison with the indexes usually used, these results suggest a reformulation in the selection indexes of the beef production system in tropical and subtropical regions in order to obtain greater profitability.
650 $aBovino
650 $aBovinocultura
650 $aGado de Corte
650 $aSeleção
653 $aGado Brangus
700 1 $aLEAL, J. J. B.
700 1 $aMINHO, A. P.
700 1 $aGULIAS GOMES, C. C.
700 1 $aMACNEIL, M. D.
700 1 $aCOSTA, R. F.
700 1 $aJUNQUEIRA, V. S.
700 1 $aSCHMIDT, P. I.
700 1 $aCARDOSO, F. F.
700 1 $aBOLIGON, A. A.
700 1 $aYOKOO, M. J. I.
773 $tJournal of Animal Breeding and Genetics$gv. 137, n. 2, p. 177-188, Mar. 2020.
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Registro original: |
Embrapa Pecuária Sul (CPPSUL) |
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Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
14/12/2005 |
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Data da última atualização: |
31/08/2017 |
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Autoria: |
BLANCHART, E.; ALBRECHT, A.; BROWN, G.; DECAENS, T.; DUBOISSET, A.; LAVELLE, P.; MARIANI, L.; ROOSE, E. |
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Título: |
Effects of tropical endogeic earthworms on soil erosion. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Agriculture, Ecosystems & Environment, v. 104, n. 2, p. 303-315, Oct. 2004. |
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Idioma: |
Inglês |
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Notas: |
Nome correto do terceiro autor: BROWN, G. G. |
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Conteúdo: |
Soil biota play a crucial role in influencing soil structure and related soil physical properties. In particular, an abundant literature shows that earthworms, through their burrowing and feeding activities, influence particle size distribution, organic matter content, organic matter location, soil aggregation, aggregate stability and tensile strength, soil roughness, and water infiltration. All those properties greatly influence soil erodibility and soil erosion. Nevertheless, there are few quantitative studies of the influence of earthworms on soil erosion. In some cases, earthworms are said to increase soil losses while other studies emphasize their control on structural stability inducing a reduction in soil erosion. This paper analyses the effects of endogeic earthworms on soil erosion, using recently published data collected in the humid tropics. Endogeics comprise two separate functional groups regarding their effects on soil physical properties, i.e. "compacting" and "decompacting" species whose effects on soil erosion may differ substantially. The effects of these earthworms on soil erodibility and erosion in the tropics ultimately depend on soil types and on the organic matter content in soils. In kaolinitic soils, irrespective of clay content, endogeics greatly influence aggregation, aggregate stability, total porosity and pore size distribution; whereas in smectitic soils (such as vertisols), earthworms have a smaller effect on soil erodibility than soil organic matter and cations. Some options for managing earthworms and organic matter in order to limit soil erosion are also discussed in this paper. MenosSoil biota play a crucial role in influencing soil structure and related soil physical properties. In particular, an abundant literature shows that earthworms, through their burrowing and feeding activities, influence particle size distribution, organic matter content, organic matter location, soil aggregation, aggregate stability and tensile strength, soil roughness, and water infiltration. All those properties greatly influence soil erodibility and soil erosion. Nevertheless, there are few quantitative studies of the influence of earthworms on soil erosion. In some cases, earthworms are said to increase soil losses while other studies emphasize their control on structural stability inducing a reduction in soil erosion. This paper analyses the effects of endogeic earthworms on soil erosion, using recently published data collected in the humid tropics. Endogeics comprise two separate functional groups regarding their effects on soil physical properties, i.e. "compacting" and "decompacting" species whose effects on soil erosion may differ substantially. The effects of these earthworms on soil erodibility and erosion in the tropics ultimately depend on soil types and on the organic matter content in soils. In kaolinitic soils, irrespective of clay content, endogeics greatly influence aggregation, aggregate stability, total porosity and pore size distribution; whereas in smectitic soils (such as vertisols), earthworms have a smaller effect on soil erodibility than soil organic ... Mostrar Tudo |
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Thesagro: |
Solo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02271naa a2200229 a 4500
001 1468644
005 2017-08-31
008 2004 bl --- 0-- u #d
100 1 $aBLANCHART, E.
245 $aEffects of tropical endogeic earthworms on soil erosion.
260 $c2004
500 $aNome correto do terceiro autor: BROWN, G. G.
520 $aSoil biota play a crucial role in influencing soil structure and related soil physical properties. In particular, an abundant literature shows that earthworms, through their burrowing and feeding activities, influence particle size distribution, organic matter content, organic matter location, soil aggregation, aggregate stability and tensile strength, soil roughness, and water infiltration. All those properties greatly influence soil erodibility and soil erosion. Nevertheless, there are few quantitative studies of the influence of earthworms on soil erosion. In some cases, earthworms are said to increase soil losses while other studies emphasize their control on structural stability inducing a reduction in soil erosion. This paper analyses the effects of endogeic earthworms on soil erosion, using recently published data collected in the humid tropics. Endogeics comprise two separate functional groups regarding their effects on soil physical properties, i.e. "compacting" and "decompacting" species whose effects on soil erosion may differ substantially. The effects of these earthworms on soil erodibility and erosion in the tropics ultimately depend on soil types and on the organic matter content in soils. In kaolinitic soils, irrespective of clay content, endogeics greatly influence aggregation, aggregate stability, total porosity and pore size distribution; whereas in smectitic soils (such as vertisols), earthworms have a smaller effect on soil erodibility than soil organic matter and cations. Some options for managing earthworms and organic matter in order to limit soil erosion are also discussed in this paper.
650 $aSolo
700 1 $aALBRECHT, A.
700 1 $aBROWN, G.
700 1 $aDECAENS, T.
700 1 $aDUBOISSET, A.
700 1 $aLAVELLE, P.
700 1 $aMARIANI, L.
700 1 $aROOSE, E.
773 $tAgriculture, Ecosystems & Environment$gv. 104, n. 2, p. 303-315, Oct. 2004.
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