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Registros recuperados: 7
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A proposal for the evaluation of the bioeconomic efficiency of beef cattle production systems R. Bras. Zootec.
Marques,Pedro Rocha; Peripolli,Vanessa; Lampert,Vinícius do Nascimento; Dias,Eduardo Antunes; Pereira,Gabriel Ribas; Oliveira,Tamara Esteves de; Rocha,Marcela Kuczynski da; Barcellos,Júlio Otávio Jardim.
ABSTRACT The objective of this study was to identify types of production system and their main indicators on bioeconomic efficiency, using qualitative and quantitative methods to evaluate beef cattle farms in the western region of the state of Rio Grande do Sul. A survey was carried out with 43 farmers operating in the western region of that state. All farms operated with complete cycle production systems in areas larger or equal to 900 ha. A qualitative questionnaire with binary answers and a quantitative questionnaire with numerical answers were applied. Technology and Management drivers were used for the calculation of the efficiency index of farmers obtained by both questionnaires. Farmers were divided into three clusters: low-efficiency level (LEL),...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Beef cattle farmers; Clusters analysis; Efficiency; Evaluation methods.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000100065
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Advantages and challenges for Brazilian export of frozen beef R. Bras. Zootec.
Pereira,Paulo Rodrigo Ramos Xavier; Barcellos,Júlio Otávio Jardim; Federizzi,Luiz Carlos; Lampert,Vinícius do Nascimento; Canozzi,Maria Eugênia Andrighetto; Marques,Pedro Rocha.
The objectives of this research were to analyse data on the international market of frozen boneless beef and to classify its participants into groups according to their trade relationships, identifying the main factors that influence the preference of a country to beef from a determined supplier country. International beef trade is composed of two markets: in one of them, the relationships between supplier and client depend on the lowest price, and Brazil is found in favorable conditions; and the other, the relationships are preferably based on the sanitary quality of the herd and traceability systems recognized by the purchaser, to which Brazilian participation is low.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bovine spongiform encephalopaty (BSE); Cluster analysis; Data mining; Foot and mouth disease; International trade beef.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000100028
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Bioeconomic impact of bull breeding soundness examination in cow-calf systems R. Bras. Zootec.
Menegassi,Sílvio Renato Oliveira; Barcellos,Júlio Otávio Jardim; Lampert,Vinícius do Nascimento; Borges,João Batista Souza; Peripolli,Vanessa.
It was evaluated the bioeconomic impact of the breeding soundness evaluation on beef cattle production in southern Brazil. Two similar production systems, with and without the use of breeding soundness evaluation, were compared during 4 years in the municipality of Júlio e Castilhos. The rate of unsound bulls in the first examination was 22.8%. By performing the examination, calf production increased by 31%, 13.8 calves/bull/year and 24 kg of calves/cow/year. The benefit/cost ratio on the investment with the breeding soundness evaluation was R$ 35.84. The breeding soundness evaluation improves bioeconomic aspects of beef cow-calf systems.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Beef cattle; Efficiency; Fertility; Productivity.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000200028
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Competitiveness levels in cattle herd farms Ciência Rural
Marques,Pedro Rocha; Barcellos,Júlio Otávio Jardim; Dill,Matheus Dhein; Dias,Eduardo Antunes; Azevedo,Eduardo Vaz Torres; Lampert,Vinícius do Nascimento; McManus,Concepta Margaret.
The aim of this experiment was to identify improvement demands for farms with different levels of competitiveness in the west of Rio Grande do Sul state, Brazil. A total of 63 owners of large farms were interviewed (farms with an area greater than 900ha) by applying a semi-structured questionnaire, guided by four drivers: technology (TEC), management (MAN), market relations (MR) and the institutional environment (IE).It was used the Statistical Analysis System 9.2 software to perform the cluster analysis and identify farmers' characteristics. Three random clusters with different levels of competitiveness were observed: low competitiveness level (LCL), middle competitiveness level (MCL) and high competitiveness level (HCL). The 29 variables (sub factors)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cluster; Level of impact; Management; Ranking; Stratification.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000300480
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Development and application of a bioeconomic efficiency index for beef cattle production in Rio Grande do Sul, Brazil R. Bras. Zootec.
Lampert,Vinícius do Nascimento; Barcellos,Júlio Otávio Jardim; Kliemann Neto,Francisco José; Canellas,Leonardo Canali; Dill,Matheus Dhein; Canozzi,Maria Eugênia Andrighetto.
An index was developed to estimate the bioeconomic efficiency of production systems, identifying alternative scenarios that could improve their efficiency, and building isoefficiency relations in beef cattle production systems in Rio Grande do Sul. The concept of return on investment was used to develop the indicator. Scenarios regarded as efficient showed values higher than 3. The bioeconomic efficiency index for beef cattle production in the theoretical reference scenario was considered inefficient. At least four modifications in the variables method made it a bioeconomically efficient activity. These circumstances were studied using sensitivity analyses, with theoretical changes in the scenarios by changing variables two by two, while the others were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Capital; Cattle farming; Productivity.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000300042
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Fontes alternativas e doses de nitrogênio no milho safrinha em sucessão à soja Rev. Ciênc. Agron.
Soratto,Rogério Peres; Pereira,Magno; Costa,Tiago Aparecido Mingotti da; Lampert,Vinícius do Nascimento.
A produtividade do milho safrinha pode ser aumentada com a adubação nitrogenada em cobertura mesmo quando cultivado em sucessão à soja. No entanto, existem inconsistências dos resultados especialmente quanto às fontes e doses a serem empregadas nessa modalidade de cultivo. Com o objetivo de avaliar o efeito de fontes e doses de nitrogênio em cobertura no milho safrinha, cultivado após soja no sistema plantio direto, conduziu-se o experimento em um Latossolo Vermelho distrófico, em Chapadão do Céu (GO). O delineamento experimental foi o de blocos ao acaso, em esquema fatorial 4 x 4, com quatro repetições. Os tratamentos foram constituídos pela combinação de quatro fontes (uréia, sulfato de amônio, uréia extrusada com produtos amiláceos (Amiréia® 180S) e...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Zea mays; Plantas-Efeito do nitrogênio; Plantio direto.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902010000400002
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Modelling beef cattle production systems from the Pampas in Brazil to assess intensification options Scientia Agricola
Lampert,Vinícius do Nascimento; Canozzi,Maria Eugênia Andrighetto; McManus,Concepta Margaret; Dill,Matheus Dhein; Oliveira,Tamara Esteves de; Mercio,Thomaz Zara; Teixeira,Odilene de Souza; Barcellos,Júlio Otávio Jardim.
ABSTRACT 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...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Adoption of technology; Animal production; Management; Stocking rate.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000400502
Registros recuperados: 7
Primeira ... 1 ... Última
 

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