Modelling beef cattle production systems from the Pampas in Brazil to assess intensification options

Detalhes bibliográficos
Autor(a) principal: Lampert, Vinícius do Nascimento
Data de Publicação: 2019
Outros Autores: Canozzi, Maria Eugênia Andrighetto, Pimentel, Concepta Margaret McManus, Dill, Matheus Dhein, Oliveira, Tamara Esteves de, Mercio, Thomaz Zara, Teixeira, Odilene de Souza, Barcellos, Julio Otavio Jardim
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/203694
Resumo: 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.
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spelling Lampert, Vinícius do NascimentoCanozzi, Maria Eugênia AndrighettoPimentel, Concepta Margaret McManusDill, Matheus DheinOliveira, Tamara Esteves deMercio, Thomaz ZaraTeixeira, Odilene de SouzaBarcellos, Julio Otavio Jardim2019-12-24T03:59:42Z20200103-9016http://hdl.handle.net/10183/203694001106787Traditional 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.application/pdfengScientia Agricola [recurso eletrônico]. Piracicaba. Vol. 77, n. 4 (2020), e20180263, 13 p.Bovinos de corteProdução animalPampa, RegiãoModelling beef cattle production systems from the Pampas in Brazil to assess intensification optionsinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT001106787.pdf.txt001106787.pdf.txtExtracted Texttext/plain56970http://www.lume.ufrgs.br/bitstream/10183/203694/2/001106787.pdf.txtfd76c70475dd959ad4e44cc37f939821MD52ORIGINAL001106787.pdfTexto completo (inglês)application/pdf554441http://www.lume.ufrgs.br/bitstream/10183/203694/1/001106787.pdfcfe05e873bf43ee77114a4052c4e1695MD5110183/2036942019-12-25 05:05:04.648257oai:www.lume.ufrgs.br:10183/203694Repositório InstitucionalPUBhttps://lume.ufrgs.br/oai/requestlume@ufrgs.bropendoar:2019-12-25T07:05:04Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Modelling beef cattle production systems from the Pampas in Brazil to assess intensification options
title Modelling beef cattle production systems from the Pampas in Brazil to assess intensification options
spellingShingle Modelling beef cattle production systems from the Pampas in Brazil to assess intensification options
Lampert, Vinícius do Nascimento
Bovinos de corte
Produção animal
Pampa, Região
title_short Modelling beef cattle production systems from the Pampas in Brazil to assess intensification options
title_full Modelling beef cattle production systems from the Pampas in Brazil to assess intensification options
title_fullStr Modelling beef cattle production systems from the Pampas in Brazil to assess intensification options
title_full_unstemmed Modelling beef cattle production systems from the Pampas in Brazil to assess intensification options
title_sort Modelling beef cattle production systems from the Pampas in Brazil to assess intensification options
author Lampert, Vinícius do Nascimento
author_facet Lampert, Vinícius do Nascimento
Canozzi, Maria Eugênia Andrighetto
Pimentel, Concepta Margaret McManus
Dill, Matheus Dhein
Oliveira, Tamara Esteves de
Mercio, Thomaz Zara
Teixeira, Odilene de Souza
Barcellos, Julio Otavio Jardim
author_role author
author2 Canozzi, Maria Eugênia Andrighetto
Pimentel, Concepta Margaret McManus
Dill, Matheus Dhein
Oliveira, Tamara Esteves de
Mercio, Thomaz Zara
Teixeira, Odilene de Souza
Barcellos, Julio Otavio Jardim
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Lampert, Vinícius do Nascimento
Canozzi, Maria Eugênia Andrighetto
Pimentel, Concepta Margaret McManus
Dill, Matheus Dhein
Oliveira, Tamara Esteves de
Mercio, Thomaz Zara
Teixeira, Odilene de Souza
Barcellos, Julio Otavio Jardim
dc.subject.por.fl_str_mv Bovinos de corte
Produção animal
Pampa, Região
topic Bovinos de corte
Produção animal
Pampa, Região
description 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.
publishDate 2019
dc.date.accessioned.fl_str_mv 2019-12-24T03:59:42Z
dc.date.issued.fl_str_mv 2020
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dc.relation.ispartof.pt_BR.fl_str_mv Scientia Agricola [recurso eletrônico]. Piracicaba. Vol. 77, n. 4 (2020), e20180263, 13 p.
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