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| 40. |  | SÁ, I. B.; CORREA, R. C.; SOUZA, R. A. de; RICHÉ, G. R.; FOTIUS, G. A. Avaliação e ações prioritárias para conservação do bioma Caatinga. Petrolina: Embrapa Semi-Árido, 2000. 30 p. Documento para discussão em Grupo de Trabalho-GT fatores abióticos, apresentado no Seminário Biodiversidade da Caatinga, 2000, Petrolina,PE.| Biblioteca(s): Embrapa Unidades Centrais. |
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| Registros recuperados : 68 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sul. |
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Data corrente: |
11/10/2019 |
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Data da última atualização: |
17/12/2019 |
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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: |
LAMPERT, V. do N.; ANDRIGHETTO CANOZZI, M. E.; MCMANUS, C. M.; DILL, M. D.; OLIVEIRA, T. E. de; MERCIO, T. Z.; TEIXEIRA, O. de S.; BARCELLOS, J. O. J. |
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Afiliação: |
VINICIUS DO NASCIMENTO LAMPERT, CPPSUL; Maria Eugênia Andrighetto Canozzi, INIA; Concepta Margaret McManus, UNB; Matheus Dhein Dill, UFRGS; Tamara Esteves de Oliveira, UFRGS; Thomaz Zara Mercio, UFRGS; Odilene de Souza Teixeira, UFRGS; Júlio Otávio Jardim Barcellos, UFRGS. |
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Título: |
Modelling beef cattle production systems from the Pampas in Brazil to assess intensification options. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Scientia Agricola, v. 77, n. 4, e20180263, 2020. |
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DOI: |
dx.doi.org/10.1590/1678-992X-2018-0263 |
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Idioma: |
Inglês |
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Conteúdo: |
Traditional livestock productivity is hard to estimate, since it depends on a gamut of animal production indicators that are difficult to measure for many farms. Thus, we propose an analytical method for estimating productivity and understanding the importance of animal production indicators under different full-cycle cattle production systems in Brazil. To evaluate the impact of these indicators, equations were derived from a comutational model of herd evolution for estimating the output parameters of the system as follows: productivity per hectare (PH) and offtake rate (COR), as a function of the indicators; calving rate (CR), mating age (AM), age of slaughter (AS) and stocking rate (SR). For this analysis, twenty-seven scenarios (simulation data) of low to high productivity were used, resulting from the combination of the following factors and levels: 1) calving rate of 50, 65 and 80 %; 2) mating age of heifers of one, two and three, years of age; and 3) age at slaughter of one, two and three year old steers. The scenario with the highest impact for each parameter and the indicator of highest impact for each scenario were identified for the production conditions in the region. Under most scenarios, a reduction in mating age had a greater impact on the productivity indexes compared to a reduction in slaughter age. Appropriate management of available technologies enables farmers to compare the marginal impacts of specific indicators on full-cycle production systems for beef cattle. Keywords: adoption of technology, animal production, management, stocking rate MenosTraditional livestock productivity is hard to estimate, since it depends on a gamut of animal production indicators that are difficult to measure for many farms. Thus, we propose an analytical method for estimating productivity and understanding the importance of animal production indicators under different full-cycle cattle production systems in Brazil. To evaluate the impact of these indicators, equations were derived from a comutational model of herd evolution for estimating the output parameters of the system as follows: productivity per hectare (PH) and offtake rate (COR), as a function of the indicators; calving rate (CR), mating age (AM), age of slaughter (AS) and stocking rate (SR). For this analysis, twenty-seven scenarios (simulation data) of low to high productivity were used, resulting from the combination of the following factors and levels: 1) calving rate of 50, 65 and 80 %; 2) mating age of heifers of one, two and three, years of age; and 3) age at slaughter of one, two and three year old steers. The scenario with the highest impact for each parameter and the indicator of highest impact for each scenario were identified for the production conditions in the region. Under most scenarios, a reduction in mating age had a greater impact on the productivity indexes compared to a reduction in slaughter age. Appropriate management of available technologies enables farmers to compare the marginal impacts of specific indicators on full-cycle production systems for beef... Mostrar Tudo |
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Thesagro: |
Gado de Corte; Produção Animal. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/202830/1/v77n4a05-SA-2018-0263.pdf
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Marc: |
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001 2113060
005 2019-12-17
008 2020 bl uuuu u00u1 u #d
024 7 $adx.doi.org/10.1590/1678-992X-2018-0263$2DOI
100 1 $aLAMPERT, V. do N.
245 $aModelling beef cattle production systems from the Pampas in Brazil to assess intensification options.$h[electronic resource]
260 $c2020
520 $aTraditional livestock productivity is hard to estimate, since it depends on a gamut of animal production indicators that are difficult to measure for many farms. Thus, we propose an analytical method for estimating productivity and understanding the importance of animal production indicators under different full-cycle cattle production systems in Brazil. To evaluate the impact of these indicators, equations were derived from a comutational model of herd evolution for estimating the output parameters of the system as follows: productivity per hectare (PH) and offtake rate (COR), as a function of the indicators; calving rate (CR), mating age (AM), age of slaughter (AS) and stocking rate (SR). For this analysis, twenty-seven scenarios (simulation data) of low to high productivity were used, resulting from the combination of the following factors and levels: 1) calving rate of 50, 65 and 80 %; 2) mating age of heifers of one, two and three, years of age; and 3) age at slaughter of one, two and three year old steers. The scenario with the highest impact for each parameter and the indicator of highest impact for each scenario were identified for the production conditions in the region. Under most scenarios, a reduction in mating age had a greater impact on the productivity indexes compared to a reduction in slaughter age. Appropriate management of available technologies enables farmers to compare the marginal impacts of specific indicators on full-cycle production systems for beef cattle. Keywords: adoption of technology, animal production, management, stocking rate
650 $aGado de Corte
650 $aProdução Animal
700 1 $aANDRIGHETTO CANOZZI, M. E.
700 1 $aMCMANUS, C. M.
700 1 $aDILL, M. D.
700 1 $aOLIVEIRA, T. E. de
700 1 $aMERCIO, T. Z.
700 1 $aTEIXEIRA, O. de S.
700 1 $aBARCELLOS, J. O. J.
773 $tScientia Agricola$gv. 77, n. 4, e20180263, 2020.
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Registro original: |
Embrapa Pecuária Sul (CPPSUL) |
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