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| Ojeda-Rojas,Oscar Alejandro; Gonella-Diaza,Angela Maria; Sá Filho,Manoel Francisco de; Nunes,Rubens; Gameiro,Augusto Hauber. |
| ABSTRACT The objective of this study was to develop a simulation model to analyse the technical, economic, and financial performance of using different reproductive strategies in dairy herds. Strategies simulated were: artificial insemination (AI) using conventional semen after oestrus detection (AIC), AI using sex-sorted semen after oestrus detection (AIS), timed artificial insemination (TAI) using conventional semen (TAIC), and TAI using sex-sorted semen (TAIS). The total time horizon analysed corresponded to 25 years, divided into 425 periods of 21 days. The model simulates the biological cycle that takes place within the bovine herd, and uses input information (productive parameters, investments, and reproductive program) to calculate output... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Herd management; Internal rate of return; Net present value; Payback; Reproduction performance. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100710 |
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| Raineri,Camila; Stivari,Thayla Sara Soares; Gameiro,Augusto Hauber. |
| ABSTRACT The objective of this study was to develop a model for calculation and analysis of production costs of lamb and, from that, to elaborate a production cost index. Panel meetings were held in five regions of the state of São Paulo, Brazil, to define technical features of representative properties of lamb production, taken as a basis for the preparation of the cost calculation model. Then the model for production cost calculation was built. The third step consisted of monitoring prices of inputs used, calculating production costs along the studied period, and generating the cost index, by the Laspeyres model. Lastly, questionnaires were applied to sheep producers, to validate the cost index. The model for production cost calculation was planned to be... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agribusiness; Economy; Economic indicator; Farm management; Lamb. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015001200443 |
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| Mendonça,Gabriela Geraldi; Simili,Flávia Fernanda; Augusto,Jeferson Garcia; Bonacim,Pedro Mielli; Menegatto,Leonardo Sartori; Gameiro,Augusto Hauber. |
| ABSTRACT The objective with this study was to calculate the total cost of maize production and beef cattle in permanent pasture activities in separate production systems (conventional) and integrated systems (maize production plus beef cattle), as well as to verify economic gains explained by the economy of scope. The first step for the development of the research was to obtain field experimental data. Six experimental treatments were studied: corn grain production, beef cattle in permanent pasture, and four integrated systems based on different crop and pasture sowings. The second step consisted in the collection, calculation, and allocation of variable and fixed costs to estimate costs of production in the systems. The crop-livestock integration showed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Economic analysis; Economy of scope; Integrated systems. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982020000100101 |
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| Afonso,Esther Ramalho; Nacimento,Rafael Araujo; Palhares,Julio Cesar Pascale; Gameiro,Augusto Hauber. |
| ABSTRACT The objective with this study was to evaluate the impact of different swine nutritional strategies and technologies, as well as the land spread system, on logistical costs of pig manure distribution. For this, pigs were fed a conventional diet (C0) or a diet supplemented with 0.01% phytase (C1); organic minerals (40% substitution; C2); synthetic amino acids at reduced dietary crude protein levels (C3); or a combination of the three strategies (C4). All pig manure was weighed, then its chemical composition was determined. The mineral values and volume of manure produced were extrapolated to corresponding pig farm sizes in Sao Paulo state (300, 650, and 1000 sows) from real pig manure levels to produce simulations. To determine the logistical cost... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Enzyme; Organic mineral; Swine; Waste. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982020000100100 |
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| Gameiro,Augusto Hauber; Gameiro,Mariana Bombo Perozzi. |
| Apesar da idéia consagrada de que arroz é uma commodity e, portanto, pouco passível de diferenciação, há um grande número de produtos, com variação de tipo, classe, padrão, embalagem, marca etc. Observa-se significativa variabilidade nos preços, tanto entre diferentes marcas, fabricantes, lojas, como também para um mesmo produto, em um curto intervalo de tempo. Diante dessas constatações, questiona-se qual o efeito da estratégia de compra de arroz por parte dos consumidores sobre seus dispêndios. Este trabalho utiliza modelos matemáticos para simular o processo de decisão de compra dos consumidores com diferentes perfis de preferência, diante dos produtos nas gôndolas dos supermercados em uma cidade no estado do Rio Grande do Sul e outra em São Paulo. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Arroz; Marca; Varejo; Preferência; Consumidor. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-20032008000400006 |
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| Martins,Simone Maria Massami Kitamura; Afonso,Esther Ramalho; Parazzi,Larissa José; Andrade,André Furugen Cesar de; Leal,Diego Feitosa; Gameiro,Augusto Hauber; Moretti,Aníbal de Sant'Anna; Arruda,Rubens Paes de. |
| ABSTRACT The present experiment was carried out to evaluate the economic viability of supplementing boar diets with organic selenium aiming to increase the number of seminal doses of sexually mature boars. Twelve boars were divided into three groups: control group received 0.3 mg kg−1 Se from sodium selenite (n = 4), inorganic group received 0.5 mg kg−1 Se from sodium selenite (n = 4), and organic group received 0.5 mg kg−1 Se from Sel-PlexTM (Alltech, Inc., n = 4). The experiment was conducted within 10 weeks and analysis was performed fortnightly. No interaction was observed between treatments and weeks for any of the variables analyzed. Boars fed diet supplemented with 0.5 mg kg−1 of organic selenium exhibited a 23% increase in the seminal doses, which... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cost production; Organic mineral; Swine. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100503 |
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| Botaro,Bruno Garcia; Gameiro,Augusto Hauber; Santos,Marcos Veiga dos. |
| Programs designed to enhance milk quality have been used to motivate dairy farmers to improve the quality of the raw milk they produce. The objective of this study was to evaluate the association between a milk quality payment program and four indicative variables of milk quality, by testing bulk tank somatic cell count (SCC), bulk tank total bacterial count (TBC), fat (FAT) and protein (PROT) percentages over three years in four dairy cooperatives in Southern Brazil. We used a multiple regression econometric model estimated from market data of milk delivered by farmers to the cooperatives. Bulk tank milk samples (n = 19,644) were monthly collected. The data set was analyzed for the effects of seasonality, average daily volume of milk, the award/penalty,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacterial count; Somatic cell count; Premium payment; Milk composition; Milk production. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000100004 |
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