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Na atual conjuntura da rela????o sociedade e natureza, inserida na racionalidade econ??mica do mundo contempor??neo, a busca de maximizar os lucros em detrimento dos recursos da natureza tem promovido um desequil??brio ambiental em diferentes escalas. Dessa forma objetivou-se analisar o processo de uso e ocupa????o da terra no munic??pio de Riach??o do Jacu??pe - Bahia, para identificar as implica????es ambientais que contribuem para a deteriora????o da paisagem. O estudo qualitativo e quantitativo pautou-se no uso e na aplica????o de indicadores socioambientais definidos e fundamentados por meio de levantamento bibliogr??fico, documental e estat??stico, trabalho de campo (com a transcri????o dos dados ambientais em planilhas e registrados em fotografias) e entrevistas com quest??es abertas a produtores rurais locais. Parte desses dados foi integrada, manipulada e analisada em ambiente SIG, pelo qual resultaram em mapas ambientais, como o de uso e cobertura da terra, que evidenciam cen??rios de deteriora????o do meio ambiente. Al??m deste procedimento, tabelas, gr??ficos e fotografias foram produzidas, analisadas e comentadas, para que melhor se compreendam os indicadores socioambientais do munic??pio. De acordo com as informa????es da pesquisa, percebeu-se a grande e extensiva utiliza????o da pecu??ria, que suprimiu a cobertura vegetal das caatingas, e ampliou os cen??rios de deteriora????o ambiental, identificados nas manchas de solo exposto, na inexist??ncia das matas ciliares, nos processos erosivos em curso. As pastagens ocorrem em praticamente 90% das terras do munic??pio, ao contr??rio das ??reas de fei????es vegetais com diferentes graus de conserva????o, que se distribuem em 5,4% do territ??rio.

ABSTRACT In the current scenario of the relationship between society and nature, which is set in the contemporary world economic rationality, the maximization of profits at the expense of natural resources has promoted an environmental imbalance at different scales. Thus, this study aimed to analyze the process of occupation and use of the land in the municipality of Riach??o do Jacu??pe, State of Bahia, to identify the environmental implications, which contribute to the deterioration of the landscape. This qualitative and quantitative study was based on the application of environmental indicators defined and supported by literature review, documentary research and…

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Coordena????o de Aperfei??oamento de Pessoal de N??vel Superior e Conselho Nacional de Desenvolvimento Cient??fico e Tecnol??gico.

A produ????o agr??cola e florestal no Brasil se destaca em rela????o a outros pa??ses devido ??s condi????es edafoclim??ticas brasileiras, aproveitamento de ??reas degradadas e uso de tecnologias agr??cola e florestal. No entanto, ocorre uma s??rie de opera????es de manejo que provocam impactos ambientais, decorrentes principalmente do uso indiscriminado de fertilizantes sint??ticos, combust??veis f??sseis, ??gua e energia el??trica. Conhecer o desempenho ambiental desses processos agr??colas e ambientais, possibilita identificar novas rotas de materiais e produtos para atender requisitos ambientais cada vez mais rigorosos, restringindo o uso de recursos naturais e emiss??es para o ambiente. Essa tese est?? organizada em quatro cap??tulos, cada um com introdu????o, desenvolvimento, refer??ncias e ap??ndices independentes. O cap??tulo I apresenta uma revis??o abordando os principais efeitos ambientais da produ????o agr??cola e florestal, enfocando as emiss??es de CO2 para a atmosfera. O cap??tulo II no formato de artigo ?? o extrato de uma publica????o no Journal of Cleaner Production avaliando o desempenho ambiental e econ??mico da produ????o de cenoura irrigada no Semi??rido brasileiro. O cap??tulo III, tamb??m do formato de artigo, n??o publicado at?? a defesa desta tese, ?? um estudo do desempenho ambiental e econ??mico da produ????o de eucalipto de ciclo curto, incluindo a an??lise de um sistema alternativo de produ????o florestal integrada com lavoura e pecu??ria. No cap??tulo IV s??o apresentadas as…

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Na atual conjuntura da rela????o sociedade e natureza, inserida na racionalidade econ??mica do mundo contempor??neo, a busca de maximizar os lucros em detrimento dos recursos da natureza tem promovido um desequil??brio ambiental em diferentes escalas. Dessa forma objetivou-se analisar o processo de uso e ocupa????o da terra no munic??pio de Riach??o do Jacu??pe - Bahia, para identificar as implica????es ambientais que contribuem para a deteriora????o da paisagem. O estudo qualitativo e quantitativo pautou-se no uso e na aplica????o de indicadores socioambientais definidos e fundamentados por meio de levantamento bibliogr??fico, documental e estat??stico, trabalho de campo (com a transcri????o dos dados ambientais em planilhas e registrados em fotografias) e entrevistas com quest??es abertas a produtores rurais locais. Parte desses dados foi integrada, manipulada e analisada em ambiente SIG, pelo qual resultaram em mapas ambientais, como o de uso e cobertura da terra, que evidenciam cen??rios de deteriora????o do meio ambiente. Al??m deste procedimento, tabelas, gr??ficos e fotografias foram produzidas, analisadas e comentadas, para que melhor se compreendam os indicadores socioambientais do munic??pio. De acordo com as informa????es da pesquisa, percebeu-se a grande e extensiva utiliza????o da pecu??ria, que suprimiu a cobertura vegetal das caatingas, e ampliou os cen??rios de deteriora????o ambiental, identificados nas manchas de solo exposto, na inexist??ncia das matas ciliares, nos processos erosivos em curso. As pastagens ocorrem em praticamente 90% das terras do munic??pio, ao contr??rio das ??reas de fei????es vegetais com diferentes graus de conserva????o, que se distribuem em 5,4% do territ??rio.

ABSTRACT In the current scenario of the relationship between society and nature, which is set in the contemporary world economic rationality, the maximization of profits at the expense of natural resources has promoted an environmental imbalance at different scales. Thus, this study aimed to analyze the process of occupation and use of the land in the municipality of Riach??o do Jacu??pe, State of Bahia, to identify the environmental implications, which contribute to the deterioration of the landscape. This qualitative and quantitative study was based on the application of environmental indicators defined and supported by literature review, documentary research and…

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Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior, CAPES, Brasil.

The results obtained in this study in crossbred dairy cattle, Gir x Holstein) in organic creation regime in subtropical region in Brazil indicated improvement in performance of the animals studied even with the presence of subclinical infection of Eimeria species when comparing two consecutive periods. Regardless of the study period from July 2013 to May 2014 or from June 2014 to May 2015 the highest number of Eimeria species was observed in the weaning category; however, Eimeria zuernii and Eimeria bovis, although they are considered more pathogenic than other species, they were the most frequent species in the present study, Eimeria cylindrica; Eimeria bukidnonensis; Eimeria canadensis; Eimeria pelita, Eimeria auburnensis, Eimeria ildefonsoi and Eimeria subspherica, they were present in small amounts. Although the body difference in kilograms of the animals in categories: lactation and weaned, subclinical infection by species of the genus Eimeria, although significant, was not indicative of changes in the average weight of the animals, which in turn, kept within the limits expected to dairy Gir and his mixed breeding. The clinical coccidiosis were only observed in some animals during the 2013 assessment period to 2015 when it was modified in the category lactation the amount of milk offered in the daily diet for each animal and the category weaned calves when were mixed to adult animals. Featuring sudden change in the handling of animals where coccidiosis served as change indicator (stress) in the handling of animals in the herd studied. After treatment with homeopathic medicine and reestablishment of handling routine, in both categories, clinical signs disappeared and all animals were recovered, thus, coccidiosis was a good change indicator in the management of the studied herd. Even affected by subclinical infection of the genus Eimeria, the cows had lower interval between births to those observed for dairy Gir and its crossbreeds which indicates be, this management method, important in the development of a dairy organic livestock in our country, where the proposed management system did not make use of any allopathic medicine as control by coccidia infection levels, regardless of the category studied in dairy cattle under organic production system.

Os resultados obtidos no presente estudo, em bovinos leiteiros mesti?os, Gir x Holand?s em regime de cria??o org?nica em regi?o tropical no Brasil, indicaram melhoria no desempenho dos animais estudados mesmo com a presen?a de infec??o subcl?nica por esp?cies do…

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Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES)

Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq)

Funda??o de Amparo ? Pesquisa do Estado de Minas Gerais (FAPEMIG)

Este trabalho foi conduzido na Fazenda Experimental do Moura, em Curvelo-MG, pertencente ? Universidade Federal dos Vales do Jequitinhonha e Mucuri. Foram realizados dois experimentos: o primeiro objetivou realizar a fitossociologia em pastagem de Brachiaria decumbens (capim-braqui?ria) antes e ap?s a renova??o com a implanta??o de sistemas agrossilvipastoris; eo segundo experimento visou avaliar o uso do bentazon para o manejo de plantas daninhas na cultura do milho em cons?rcio com as forrageiras Brachiaria brizantha cv. Marandu (capim-marandu) e Macrotyloma axillare (java) com eucalipto em sistemas agrossilvipastoris implantados em dezembro de 2014. No primeiro experimento,em novembro de 2014, realizou-se o levantamento fitossociol?gico na pastagem de capim-braqui?ria, antecedendo a implanta??o dos sistemas integrados; e o segundo foi feito um ano ap?s a implanta??o dos sistemas, em dezembro de 2015. O segundo experimento teve por base parcelas que foram compostas por arranjos de cultivos consorciados com milho e B. brizantha cv. Marandu (capim-marandu), ou M. axillare (java) ou capim-marandu+java, al?m de eucalipto, nos espa?amentos de 12?2 e 12?3 m. Nas subparcelas, foram avaliados os manejos de plantas daninhas com e sem o uso de bentazon. Observou-se no primeiro experimento que houve redu??o no n?mero de esp?cies de plantas daninhas ap?s a implanta??o dos diferentes sistemas agrossilvipastoris, e o capim-marandu foi capaz de inibir a incid?ncia de outras plantas, formando pasto produtivo, ao contr?rio da java. No segundo experimento, p?de-se observar que o herbicida n?o foi eficiente no controle de plantas daninhas, mesmo entre os diferentes arranjos de plantio; tamb?m n?o houve interfer?ncia destes sobre a produtividade de milho.

Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2016.

This study was conducted at the Experimental Farm of Moura, in Curvelo-MG, belonging to the Federal University of…

Data de aprova??o ausente.

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Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES)

Objetivou-se com este trabalho avaliar economicamente a implanta??o de sistemas de integra??o Lavoura-Pecu?ria-Floresta (iLPF) em ?reas de pastagem de baixa produtividade nas cidades de Francisco S? e Montes Claros (Norte de Minas Gerais) e Datas (Alto Jequitinhonha). A partir do fluxo de caixa foram calculados os indicadores Valor Presente L?quido (VPL), Taxa Interna de Retorno (TIR), Raz?o Benef?cio Custo (B/C), Payback e Valor Peri?dico Equivalente (VPE) para analisar a viabilidade econ?mica. Fez-se uma an?lise de risco pelo m?todo de Monte Carlo com aux?lio do software @RISK. Os tr?s sistemas geraram lucro, ou seja, as receitas superaram os custos. Os sistemas de iLPF de Datas e iPF de Montes Claros proporcionaram VPL e VPE positivos, TIR maior que a taxa de juros e B/C maior que 1, apresentando viabilidade econ?mica, enquanto a iLPF de Francisco S? apresentou VPL e VPE negativos, TIR menor que a taxa de juros e B/C menor que 1, sendo invi?vel economicamente. Os tr?s sistemas apresentaram Payback dentro do horizonte de planejamento, implicando viabilidade econ?mica por este indicador. A iLPF de Datas apresentou viabilidade econ?mica e um baixo risco de investimento, n?o apresentou nenhuma chance de o VPL ser negativo. A iPF de Montes Claros apresentou viabilidade econ?mica e um baixo risco de investimento, com 3,4% de chance de apresentar VPL negativo. A iLPF de Francisco S? n?o apresentou viabilidade econ?mica e um alto risco de investimento, com 68% de chance de apresentar VPL negativo. Nos tr?s sistemas a vari?vel de entrada pre?o de venda do eucalipto aos 6 anos foi a que apresentou maior influ?ncia sobre a vari?vel de sa?da VPL. Na iLPF de Datas a vari?vel de entrada pre?o do feij?o foi a que apresentou menor influ?ncia sobre a var?vel de sa?da VPL. Nos sistemas de iPF de Montes Claros e iLPF de Francisco S?, a vari?vel de entrada produ??o do eucalipto aos 10 anos foi a que apresentou menor influ?ncia sobre a var?vel de sa?da VPL. Recomenda-se a produ??o consorciada, principalmente em se tratando de um mercado agropecu?rio inst?vel e oscilante, como o atual mercado…

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CAPES

Existe um posicionamento atual dos pesquisadores e professores sobre a necessidade de curr??culos que proporcionem um ensino cr??tico, participativo e cidad??o, levando em considera????o o contexto socioambiental, cient??fico e tecnol??gico em que vivemos. Esta abordagem somente ?? poss??vel a partir da discuss??o e da inser????o nos curr??culos de temas que permitam ao estudante uma reflex??o acerca do cotidiano em que vivem e do seu papel enquanto cidad??o. As propostas curriculares sob enfoque das rela????es entre ci??ncia, tecnologia, sociedade e ambiente buscam trazer ao contexto de ensino de ci??ncias temas que mobilizem, de modo integrado, conhecimentos cient??ficos, sociais, ??ticos, pol??ticos e ambientais relacionados ?? ci??ncia e ?? tecnologia. As Quest??es Sociocient??ficas (QSC) s??o um meio para realizar o estudo das rela????es entre Ci??ncia, Tecnologia, Sociedade e Ambiente em sala de aula. Justamente porque as QSC s??o problemas controversos que, para sua solu????o ou compreens??o, exigem a mobiliza????o de conte??dos cient??ficos, sociais, pol??ticos e econ??micos, al??m de conhecimentos provenientes de tradi????es culturais, valores ??ticos e ambientais. Ao privilegiar esta perspectiva, aponta-se a necessidade de aproxima????o com o tema argumenta????o. Este trabalho teve por objetivo geral avaliar a dimens??o ??tica dos argumentos produzidos por estudantes a partir de uma QSC sobre pecu??ria. Este estudo foi realizado na Universidade Federal da Bahia, no curso superior de Biologia, com o professor titular da disciplina. De acordo com as escolhas metodol??gicas, os procedimentos adotados nesta investiga????o foram de natureza qualitativa. A aplica????o da sequ??ncia did??tica permitiu a constru????o de argumentos pelos estudantes; a mobiliza????o da dimens??o ??tica nos argumentos constru??dos e sua posterior avalia????o; favoreceu o entendimento do que vem a ser uma QSC, mostrando que a resolu????o do problema esteve relacionada ?? aproxima????o do tema proposto com o cotidiano dos alunos; ?? busca no contexto de assuntos que possam dar significado aos conte??dos em sala de aula e ?? interdisciplinaridade na abordagem dos temas. A abordagem da QSC no contexto da educa????o CTSA possibilitou, por meio da mobiliza????o destes conte??dos, argumentos estruturados no modelo de Toulmin por cada grupo de estudantes e sua respectiva dimens??o ??tica, posteriormente avaliada. A avalia????o dessa dimens??o leva-nos…

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CNPq

This research aimed to understand the territorial impacts generated by the activity in beef cattle in the mesoregion Tri?ngulo Mineiro / Alto Parana?ba, during the period 1990-2010. The proposal was to identify through the programs, projects and agricultural policies, the way that agribusiness cattle emerged in mining lands and to analyze its impact social, political and economic into the territory. From the study, we explored the forms of assistance provided by the state and by large institutions such as the Brazilian Association of Zebu Breeders (ABCZ), which led to the expansion and strengthening of livestock in this region in particular. So even being considered by other agribusiness sectors, such as the soy and cane sugar - the latter being one of the most significant in terms of production and extension within triangulino since the 1990s - as a segment late, politically conservative and environmentally destructive, the cattle still remains representative across meso, possessing even one of the best productivity rates in the state of Minas Gerais. Finally, the study sought to understand the way the agrarian elites come settling and re-organizing, meeting the new requirements posed by agribusiness economy while perpetuating its power relations historically established site.

A presente pesquisa teve como objetivo geral compreender os impactos territoriais gerados pela atividade pecu?ria bovina de corte na mesorregi?o Tri?ngulo Mineiro/Alto Parana?ba, durante o per?odo de 1990 a 2010. A proposta foi identificar, por meio dos programas, projetos e pol?ticas p?blicas agropecu?rias, a forma com que o agroneg?cio do gado emergiu em terras mineiras, bem como analisar seus reflexos sociais, pol?ticos e econ?micos no territ?rio. A partir do estudo, foram exploradas as formas de interven??o dadas pelo Estado e por grandes institui??es, como a Associa??o Brasileira de Criadores de Zebu (ABCZ), que propiciaram a expans?o e o fortalecimento da pecu?ria nesta regi?o em espec?fico. Assim, mesmo sendo considerado por outros setores do agroneg?cio, como o da soja e o da cana-de-a??car - sendo este ?ltimo um dos mais significativos em termos de produ??o e extens?o no territ?rio triangulino desde os anos 1990 - como um segmento atrasado, politicamente conservador e ambientalmente destrutivo, a pecu?ria bovina ainda se mant?m representativa em toda mesorregi?o, possuindo, inclusive, um dos melhores ?ndices de produtividade no estado de Minas Gerais. Por fim, o trabalho buscou compreender a forma com que as elites agr?rias v?m se estabelecendo e se re-organizando, atendendo ?s novas necessidades colocadas pela…

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Made available in DSpace on 2020-06-18T21:40:30Z (GMT). No. of bitstreams: 1 2012 - Sidinei Julio Beutler.pdf: 1997272 bytes, checksum: 920a633903c3a2a4fc118a32ff6d600d (MD5) Previous issue date: 2012-02-23

Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior, CAPES, Brasil.

The system crop-livestock integration (CLI), associated with the no-tillage has being highlighted as an important alternative for agriculture, aiming the land usage efficiency and soil conservation by maintaining organic matter. The objective of this study was to evaluate the pattern of soil organic matter (SOM) and organic phosphorus (Po) attributes in areas of crop-livestock system and pasture in the Cerrado of Goi?s State, Brazil. Soil samples and crop residues were collected in three areas, namely: Urochloa decumbens pasture with 15 years of implantation; CLI with 13 years of annual rotation with Urochloa ruziziensis; and native vegetation, used as a comparative area. Soil bulk density (Ds), total organic carbon (TOC) and total nitrogen (Nt) were evaluated in samples taken at 0-5, 5-10, 10-20, and 20-40 cm depths; and aggregate stability, humic fractions of SOM, light organic matter (LOM), granulometric fractions, respirometry CO2, remaining phosphorus (Prem) and fractional Po from samples taken at 0-5 and 5-10 cm depths. They were determined 13C and 15N in the soil and in the fractions of SOM, and also the 13C of plant residues. The highest values of aggregate stability, TOC, Nt, mass MOL, physical and granulometric fractions of SOM and Po were observed in the Cerrado area. The pasture area showed the highest CO2 respirometry. The CLI and pasture areas showed similarities in most of the attributes. Soil bulk density in the surface layer (0-5 cm) was similar in the three areas. The aggregate stability in the CLI area was affected most in the 0-5 cm. In the CLI area the quantified values of TOC and N were similar and/or higher in all layers from 0 to 40 cm depth, when compared to pasture. The CLI and pasture areas had lower P fixation in the 0-5 and 5-10 cm layers. The CLI area had the highest values of P inorganic forms. The Po-H (moderately labile Po) was related to the CO2 respirometry rates. The mass of LOM was an important indicator of SOM management. The 15N proved appropriate in studies concerning the degree of SOM humification. The granulometric fractionation of SOM was more sensitive to identify variations in the SOM availability compared to the chemical fractionation. The residues with highest C/N ratios showed highest rates of CO2 respirometry. The well managed pastures, with more years of cultivation showed potential to transform the inorganic phosphorus into organic sources of this nutrient. The SOM fractions (physical and chemical) and the organic P fractions were associated with the least…

Submitted by Jorge Silva ([email protected]) on 2018-09-04T21:51:00Z No. of bitstreams: 1 2013 - Ana Luiza Clementino da Silva.pdf: 4524611 bytes, checksum: a4b311efe071f79539552ceee96e3784 (MD5)

Made available in DSpace on 2018-09-04T21:51:00Z (GMT). No. of bitstreams: 1 2013 - Ana Luiza Clementino da Silva.pdf: 4524611 bytes, checksum: a4b311efe071f79539552ceee96e3784 (MD5) Previous issue date: 2013-08-30

The present study lies in the context of ongoing discussions concerning the possibilities of preventing and controlling illegal deforestation in the Brazilian Amazon, started with the Decree 6321/07. Therefore, the current study has as its purpose investigating the theme, which involves the cattle-raising-deforestation connection, through the aforementioned economic activity in the city of Paragominas, in Eastern Par?, Brazil. More precisely, it analyzes the project ?Paragominas, A Green Cattle-Raising Model ? Socio-environmental and Production Adequacy,? also known as Green Cattle-Raising. The inquiry into the theme was performed by means of a qualitative approach: interviews with agents directly involved in the study case, in a total of nine interviews. Thus, the research has proposed the analysis of the process of change in the region which, once symbol of deforestation, is currently considered a model of sustainable development to other cities in the Amazon. Hence, the study displays the leading role of the rural farmers and producers union, since the mentioned institution turns out to have a key position in this study, as it is not only the leading agent responsible for the Green Cattle-Raising Project, but also represents society involved in this change. Finally, the study analyzes the assumption Paragominas is effectively a Green City but concludes that it still undergoes a transition process, being on the way to such an achievement.

Este trabalho se insere no contexto das discuss?es sobre as possibilidades de conter e controlar o desmatamento ilegal na Amaz?nia brasileira, iniciada com o decreto 6321/07. Neste sentido, a proposta deste trabalho ? estudar o tema que envolve a quest?o do bin?mio pecu?ria-desmatamento atrav?s desta atividade econ?mica no munic?pio de Paragominas, no leste do Par?, mas especificamente do projeto ?Paragominas, Modelo de Agropecu?ria Verde - Adequa??o socioambiental e produtiva?, mais conhecido como Pecu?ria Verde. A investiga??o do tema foi realizada por meio de m?todos qualitativos, no caso entrevistas com os atores diretamente envolvidos no estudo de caso, totalizando nove entrevistas. Dessa forma, a pesquisa prop?s a an?lise do processo de mudan?a na regi?o, que j? foi sin?nimo de desmatamento, hoje ? tida como modelo de desenvolvimento sustent?vel para outras cidades da Amaz?nia. O trabalho mostra assim, o protagonismo do sindicato de produtores rurais, de tal modo que esta ser? uma institui??o chave neste estudo, uma vez que ao mesmo tempo ? o ator respons?vel pelo projeto Pecu?ria Verde e representa tamb?m a sociedade envolvida com esta mudan?a. Por fim, o…

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Made available in DSpace on 2018-10-05T19:51:28Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) dailiene_costa_martins.pdf: 912491 bytes, checksum: 33139be95a4396938cbad99798e74ac2 (MD5) Previous issue date: 2018

Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES)

Os sistemas de integra??o s?o modelos de produ??o sustent?veis que visam melhor uso dos recursos naturais e insumos, gerando maior diversidade de produtos para o produtor rural aumentar sua renda. Estes sistemas s?o mais complexos, pois agregam o componente agr?cola, pecu?rio, e, tamb?m, o florestal em uma mesma ?rea, exigem maior controle do manejo das forrageiras e intera??es com o ambiente, que t?m efeito na produ??o de produtos de origem animal. Objetivou-se avaliar as caracter?sticas da pastagem e o desempenho produtivo de bovinos da ra?a Nelore, em dois sistemas de integra??o, ILP e ILPF, nas esta??es de ver?o e inverno. O experimento foi conduzido na Embrapa Gado de Corte, Campo Grande-MS, em ?rea experimental com dois sistemas, um de integra??o lavoura-pecu?ria-floresta (ILPF) com 227 ?rvores/ha de Eucalyptus urograndis e outro de integra??o lavoura-pecu?ria (ILP) com ?rvores nativas remanescentes, ambos com pastagens de Brachiaria brizantha cv. BRS Piat?. O delineamento experimental utilizado foi o de blocos completos ao acaso em esquema de parcelas subdivididas, em que as parcelas consistiram em dois sistemas de integra??o (ILP e ILPF) e, as subparcelas, nas esta??es do ano (inverno e ver?o). A produ??o de massa seca (PMS) de forragem foi maior no ILP (3.412 kg/ha) que no ILPF (2.308 kg/ha). Para o ganho de peso vivo (GPV) e o ganho m?dio di?rio, n?o foram encontradas diferen?as significativas (P>0,05) entre os tratamentos ILP 238,6 kg/ha; 475,4 g/cab. dia) e ILPF (268,7 kg/ha; 581,4 g/cab. dia). O desempenho animal n?o foi prejudicado pela menor massa seca de forragem no ILPF, na esta??o de ver?o. Os valores de prote?na e DIVMO da folha foram maiores no ILPF.

Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2018.

Integrated systems are sustainable production models that aim at better use of natural resources, generating greater diversity of products for the rural producer to increase their income. These systems are more complex, since they add the agricultural component, livestock, and also the forest in the same area,…

Submitted by Suelen Reis ([email protected]) on 2013-04-22T19:38:03Z No. of bitstreams: 1 Dissertacao Rodrigo Lopesseg.pdf: 6101495 bytes, checksum: b7c89ccd1c5eda9de5eec5c37b07bb18 (MD5)

Approved for entry into archive by Rodrigo Meirelles([email protected]) on 2013-05-24T11:27:10Z (GMT) No. of bitstreams: 1 Dissertacao Rodrigo Lopesseg.pdf: 6101495 bytes, checksum: b7c89ccd1c5eda9de5eec5c37b07bb18 (MD5)

Made available in DSpace on 2013-05-24T11:27:10Z (GMT). No. of bitstreams: 1 Dissertacao Rodrigo Lopesseg.pdf: 6101495 bytes, checksum: b7c89ccd1c5eda9de5eec5c37b07bb18 (MD5) Previous issue date: 2009

Esta disserta????o analisa o abastecimento de carne verde em Salvador, no s??culo XIX, tendo como objetos principais de an??lise, a Superintend??ncia do Matadouro P??blico da Bahia - criada em 1866, sob administra????o provincial e municipal - e a pr??tica de atravessamento e forma????o de monop??lio sobre o com??rcio de carne verde, referendados freq??entemente nas fontes documentais, como principais fatores respons??veis, pelo alto custo da carne vendida em Salvador. Para tanto, busca as origens das dificuldades que cercavam o abastecimento, nos caminhos percorridos pelos rebanhos, na fiscaliza????o deficiente dos Registros de gado e nos abusos cometidos pelas pessoas que negociavam diretamente a carne verde no mercado de Salvador.

Salvador

p. 1-105

Submitted by Santiago Fabio ([email protected]) on 2013-04-08T18:37:01Z No. of bitstreams: 1 Dissert Guilherme_seg.pdf: 2462232 bytes, checksum: 87997b616c7f4b2eaee0089ea872f5b1 (MD5)

Approved for entry into archive by Rodrigo Meirelles([email protected]) on 2013-04-09T16:01:59Z (GMT) No. of bitstreams: 1 Dissert Guilherme_seg.pdf: 2462232 bytes, checksum: 87997b616c7f4b2eaee0089ea872f5b1 (MD5)

Made available in DSpace on 2013-04-09T16:01:59Z (GMT). No. of bitstreams: 1 Dissert Guilherme_seg.pdf: 2462232 bytes, checksum: 87997b616c7f4b2eaee0089ea872f5b1 (MD5) Previous issue date: 2006

A demanda pela qualidade do leite vem aumentando a cada dia em todas as bacias leiteiras do pa??s, e os produtores, para atender ?? ind??stria e aos consumidores, al??m do pre??o competitivo, precisam enfrentar o desafio de manter e garantir a qualidade do leite ap??s a sa??da da fazenda. O presente estudo teve por objetivos: 1) Caracterizar as condi????es locais de obten????o do leite de uma fazenda no Estado da Bahia; 2) Propor e recomendar procedimentos operacionais de higiene; 3) Realizar an??lises microbiol??gicas e do pH da ??gua utilizada na propriedade; 4) Realizar an??lises microbiol??gicas do leite cru refrigerado armazenadas no tanque de expans??o; 5) Isolar e identificar as bact??rias presentes no tanque de expans??o; 6) Avaliar a efici??ncia do uso de um detergente (alcalino clorado) e tr??s sanificantes (hipoclorito de s??dio, clorexidina e ??cido perac??tico no tanque de expans??o. Como resultados, para cada um dos itens obteve-se: 1) A caracteriza????o da fazenda revelou condi????es que variaram de insatisfat??rias a satisfat??rias para produ????o de leite cru resfriado, contudo, diversas defici??ncias quanto ao contexto higi??nico-sanit??rio foram identificadas; 2) Na medida em que a higiene constitui fator primordial na determina????o da qualidade inicial do leite, os resultados evidenciam necessidades, tanto para o estabelecimento de crit??rios na ado????o de programas de higieniza????o quanto de investimentos em atividades de apoio e orienta????o aos produtores, com o prop??sito de corrigir os problemas encontrados e alcan??ar maior efici??ncia nos m??todos de obten????o do leite nas propriedades; 3) Foram isoladas bact??rias aer??bias mes??filas, coliformes totais e fecais da agua proveniente da fonte e da torneira da propriedade, apresentando um pH de 4,0 e 4,2 na ??gua da fonte e torneira respectivamente; 4) Foram isoladas bact??rias aer??bias mes??filas, coliformes totais e fecais do leite cru refrigerado; 5) Foram isoladas do tanque de expans??o as bact??rias: Enterobacter spp.; Enterobacter hafnia; Pseudomonas spp.; Streptococcus spp.; Micrococcus spp Staphylococcus spp e Bacillus spp.; 6) Apesar dos resultados estat??sticos n??o apresentarem diferen??as significativas quanto a efici??ncia do produtos, observou-se uma m??dia de 4,09 redu????es decimais para o produto ?? base de hipoclorito de s??dio, enquanto que o detergente clorado apresentou a menor m??dia com 2,18…

Submitted by Carolina Neves ([email protected]) on 2020-01-10T22:29:11Z No. of bitstreams: 1 DISSERTA??O ANTONIO IMPRIMIR 01.pdf: 2642345 bytes, checksum: e3c3202f1bd44261affb5de97d5cee6d (MD5)

Made available in DSpace on 2020-01-10T22:29:11Z (GMT). No. of bitstreams: 1 DISSERTA??O ANTONIO IMPRIMIR 01.pdf: 2642345 bytes, checksum: e3c3202f1bd44261affb5de97d5cee6d (MD5) Previous issue date: 2012-10-24

Funda??o de Amparo ? Pesquisa do Estado da Bahia - FAPEB

The watershed of the River Wetlands is inserted in one of the most threatened of the world: the Atlantic forest. Due to its importance, mainly to meet part of the Porto Seguro - BA city, this study aimed to relate the influence of the socio-economic and environmental water in their behavior. The completion of the research will apply the following activities: use mapping and land use through pre-processing of satellite imagery, high resolution, and support software that work with Geographic Information System (GIS), and, characterization of the profile of farmers under the socioeconomic and environmental aspects. The work also seeks to show that saving the environment can be as interesting to the owner as agriculture and animal husbandry, especially for small farmers, promoting the generation of economic revenue to the conservation of natural resources on the property, as well as the environmental suitability the rural properties. The water with land use more intense suffered constant oscillation, confirming the importance of forest resources for biodiversity conservation and maintenance of the quantity and quality of water resources.

A microbacia hidrogr?fica do Rio dos Mangues (MHRM) est? inserida em um dos biomas mais amea?ados do planeta: a Mata Atl?ntica. O Rio dos Mangues localiza-se no munic?pio de Porto Seguro, extremo Sul do Estado da Bahia, nordeste brasileiro. A import?ncia da pesquisa justifica-se, principalmente, por este rio abastecer ? com ?gua pot?vel ? a maior parte do munic?pio de Porto Seguro. O objetivo principal desta disserta??o foi analisar os aspectos socioecon?micos e ambientais existentes na MHRM, al?m de propor um modelo de gest?o para esta microbacia, visando ? conserva??o dos recursos naturais e minimizar os conflitos entre os atores inseridos na ?rea. Dados prim?rios obtidos a partir de question?rios foram utilizados para constru??o do perfil ambiental e econ?mico dos agricultores inseridos nesta microbacia, al?m de analisar a percep??o desses agricultores quanto ?s quest?es ambientais. A metodologia utilizada para o desenvolvimento da pesquisa foi de car?ter quali-quantitativa e explorat?ria; constando de pesquisa bibliogr?fica, aplica??o de question?rio e utiliza??o de t?cnicas de geoprocessamento. O mapa de uso e cobertura da terra obtido a partir das geotecnologias foi utilizado para conhecer as formas de uso agr?cola das terras e mensurar o grau de antropiza??o da ?rea. Os dados secund?rios foram utilizados para fundamenta??o da pesquisa e a an?lise da gest?o, feita com base na legisla??o vigente. Essas informa??es…

Submitted by Jorge Silva ([email protected]) on 2017-05-26T19:30:47Z No. of bitstreams: 1 2014 - Sabrina da Costa de Oliveira.pdf: 7923454 bytes, checksum: 7e0abeab415ea68ffa06cabc394dceeb (MD5)

Made available in DSpace on 2017-05-26T19:30:47Z (GMT). No. of bitstreams: 1 2014 - Sabrina da Costa de Oliveira.pdf: 7923454 bytes, checksum: 7e0abeab415ea68ffa06cabc394dceeb (MD5) Previous issue date: 2014-12-22

Given the importance of the Rio dairy farming and aimed at ensuring the sustainability of the activity in the state of Rio de Janeiro, as well as the satisfaction and well-being of the producer, it is essential to develop policies and incentive programs created by state government in partnership with the Rio de Janeiro dairy cooperatives. These partnerships can promote effective actions and boosters, to develop the technical assistance activities and placement of information directed to the adoption of a set of conservation practices that ensure environmental sustainability of the activity. This study aimed to identify and characterize the fluminense dairy cooperatives registered in the system OCB / SESCOOP-RJ, diagnosing the availability of technical assistance from these, the average volume of milk picked up monthly, the adoption of soil conservation practices and feelings and ideas of producers regarding the use of conservation techniques in environmental terms. The work was carried out in the North /Northwest; Mountain and South Central regions of Rio de Janeiro estate, through semi-structured interviews with 14 administrative managers from 14 different cooperatives located in 12 municipalities in the state, as well as a total of 21 producers of 3 selected cooperatives. For these same cooperative focus group meetings were held by the 109 cooperative of three municipalities on different dates. It was identified by the diagnosis that dairy cooperatives registered until the month of December 2011 represent 10% of all registered cooperatives in the OCB / SESCOOP-RJ System, but this total only 4% is in full operation. It was found that the highest average monthly volumes of milk received by cooperating, in the considered period of study, are related to cooperatives who reported participating in rational use of natural resources programs, developed in partnership with the State Technical Assistance Company (EMATER - RJ). In both Regions were identified that cooperative farmers using soil conservation techniques, but require instruction on the importance of adopting a set of practices for the system sustainability production. Due to a deficient information system by the cooperatives, producers demonstrate the need for information tools availability for sharing the experiences and ideas that encourage the adoption of these environmental practices.

Diante da relev?ncia da pecu?ria leiteira fluminense e visando a garantia da sustentabilidade da atividade no estado do Rio de Janeiro, assim como a satisfa??o e o bem estar do produtor, torna-se indispens?vel o desenvolvimento de pol?ticas e programas de…

Submitted by Celso Magalhaes ([email protected]) on 2018-09-03T15:24:29Z No. of bitstreams: 1 2017 - Deumara Galdino de Oliveira.pdf: 1019700 bytes, checksum: 4721a816da519b1d051c792477ad01f0 (MD5)

Made available in DSpace on 2018-09-03T15:24:29Z (GMT). No. of bitstreams: 1 2017 - Deumara Galdino de Oliveira.pdf: 1019700 bytes, checksum: 4721a816da519b1d051c792477ad01f0 (MD5) Previous issue date: 2017-01-19

The sustainability in agriculture can be hampered by inadequate management, such as in the practice of monocultures, or by degradation of pastures. In both situations, the productivity drops. In contrast, the production system based on the adoption of Crop-Livestock Integration rotation of crops has many benefits, such as the diversified food production, improvement of the physical, chemical and biological soil properties, increased stability production, replenishment of organic matter, reducing costs of agricultural activity due to the optimization of the use of inputs, control weeds, pests and diseases. It is noted the need for planning actions that have to be implemented in the adoption of this management, because the system of production based on the ILP is complex, in order for the framer to obtain success. The objective of this thesis is to develop and to implement a linear programming model (PL) that will provide as a result a schedule with the best selection of crops in each glebe per period and with the greatest weight gain of each animal. As well as in other areas, the PL in agriculture aims to obtain a solution that provides the best efficiency in the use of resources, since they are increasingly scarce. Thus, it is important to search for solutions that provide as a result the ideal combination between them and that will lead to better performances in agriculture, generating higher productivity and profitability. The linear programming model was developed from empirical work conducted by Alvarenga and Neto (2008) at Embrapa Maize and Sorghum research center (Sete Lagoas, MG) in an area of 24 hectares. For the implementation of the computational model data on agricultural suitability and weight gain of the animal in each period and in each glebe were needed. In order to test the mathematical model developed, values for agricultural suitability and of weight gain of animal were generated at random using the solver of MATLAB 7.4. With this, it was possible to perform the implementation of the computational linear programming model in MATLAB. There were conducted two trials; the first considering four periods, four tracts and transit of two animals, and the second with ten periods, four tracts and transit of three animals. The results show that the linear programming model is consistent with the empirical work conducted by Alvarenga and Neto (2008). The linear programming model satisfies all the restrictions imposed, maximizes the weight gain of each animal and provides the best selection of crops

A sustentabilidade na agropecu?ria pode ser prejudicada pelo manejo inadequado como a…

Submitted by Sandra Pereira ([email protected]) on 2018-05-09T13:59:39Z No. of bitstreams: 1 2010 - Marcos Pinheiro Franque.pdf: 14895648 bytes, checksum: 175b19f715efd4282c83347a6d0ce674 (MD5)

Made available in DSpace on 2018-05-09T13:59:39Z (GMT). No. of bitstreams: 1 2010 - Marcos Pinheiro Franque.pdf: 14895648 bytes, checksum: 175b19f715efd4282c83347a6d0ce674 (MD5) Previous issue date: 2010-03-19

Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico, CNPq, Brasil.

This work describes the dairy farms profile and of its owners, as well as the epidemiological condition of the herd to Babesia bovis, Babesia bigemina and Anaplasma marginale infection in the south mesorregi?o Espirito-santense, with base in a serologic study. Owners or manager of 38 dairy farms were interviewed with a semi-structured questionnaire and the data analyzed by descriptive statistics. In 97% of the dairy farms, the herd was formed by animals with different degrees of blood girolando. Of all producers, 61% were exclusively dairy farms owners and 34% were also coffee producer. The extensive creation system is used in 61% of dairy farms. The dairy farms management, in 89% and 11% of the cases were accomplished by the owners and administrators, respectively. The serologic study was accomplished using indirect ELISA of 756 samples of bovine serum, 380 of dairy cows and 376 of calves in breast feeding phase. The mesorregi?o studied was classified in situation of stability for B. bovis (98,4%), B. bigemina (96,7%) and A. marginale (96,6%) to dairy cows. In relation to the calves was observed prevalence of 75,5% to Babesia bovis, 78,5% to B. bigemina and 69,2% to A. marginale. In general, the results demonstrated that is possible to increase the production and productivity of these dairy farms, but is necessary the owners adapts to the current competitive productive milk system, mainly about the managerial aspect. In the south mesorregi?o Esp?rito-santense the risk of occurrence of outbreaks of babesiosis or anaplasmosis in adult animals is low. However, preventive measured should be adopted for the calves, mainly for those with less to three months of age.

Este trabalho descreve o perfil de propriedades leiteiras e dos produtores, bem como a situa??o epidemiol?gica do rebanho da mesorregi?o sul Esp?rito-santense em rela??o ? Babesia bovis, Babesia bigemina e Anaplasma marginale, com base em um estudo sorol?gico. Propriet?rios ou administradores de 38 estabelecimentos produtores foram entrevistados com uso de um question?rio semi-estruturado e os dados analisados atrav?s de estat?stica descritiva. Em 97% das propriedades visitadas, o rebanho leiteiro era formado por animais com diferentes graus de sangue girolando. Dentre os produtores, 61% se dedicavam exclusivamente a produ??o leiteira e 34% tamb?m se dedicavam ? cafeicultura. O sistema de cria??o extensiva foi utilizado em 61% das propriedades. Foi observado que o gerenciamento, em 89% e 11% dos casos era realizado pelos propriet?rios e…

Submitted by Sandra Pereira ([email protected]) on 2016-08-08T15:52:29Z No. of bitstreams: 1 2010 - Carlos Augusto de Oliveira.pdf: 1409794 bytes, checksum: 3595756c8ac7bfcfd377e275b4a19134 (MD5)

Made available in DSpace on 2016-08-08T15:52:29Z (GMT). No. of bitstreams: 1 2010 - Carlos Augusto de Oliveira.pdf: 1409794 bytes, checksum: 3595756c8ac7bfcfd377e275b4a19134 (MD5) Previous issue date: 2010-12-15

The purposes of this survey are related to the development and application of information sustem (IS) on production costs management on livestock farming emphasizing pastures costs based on the simplicity of operational procedures. The pattern considered pastures as feeding intake promoting the measurement of their costs. The correction factor for adjusting animal units (UA) from a herd, estimating UA size up to flock physical validity was carried out by this study. The survey was accomplished on a farm located in S?o Mateus, Esp?rito Santo state, Brazil, presenting 271 hectares of total area and 220 hectares of pastures area, for 26 months collecting data from births and animal herd inclusion and exclusion dates, initial and final animal weights, prophylactic handlings as well as the origin and destination of trading animals. During observation period, 645 bovine animals, being 400 ones traded on this period of time, presenting 172 kg mean weight at the inclusion period and 521.1 kg mean weight at the exclusion one were reported. Information as: labour expenses, electrical power, mineral supplement, energetic-proteic supplement, veterinary drugs, etc., were described, as well. For obtaining of the production cost, 80% over salaries over social payments, as 0.5% as well as improvements for estimating depreciation costs were monthly performed. Land value was not used for this cost model. Information system granted zootechnical performances monitoring and expenses by the latter 12 months (from 13th month) independent from the civil year, monthly presenting animal activity income. Bovine animals acquisition, pastures and labour represented 93.5% from total costs. Mean animal income on the last 12 months of examination was 27.3%. It might be concluded that information system has been an appropriate method for livestock farming management based on production costs and zootechnical performances, as well as costs excel application on beef cattle raising, specially in regard to grazing, enabling the demonstration of production cost and its relationship with difficult measurements components by livestock farmers. Procedures related to herd traceability by information system were also performed. This study also demonstrated for brazilian public theasury, the possibility of 90% of discounts over crude income from beef cattle sale as motivation to the beef farmers included into SISBOV.

Os objetivos do trabalho est?o relacionados ao desenvolvimento e aplica??o de Sistema de Informa??es (SI) na gest?o dos custos de produ??o em pecu?ria de corte com ?nfase no custo das pastagens, baseado na simplifica??o de…

Submitted by Sandra Pereira ([email protected]) on 2020-09-22T12:01:21Z No. of bitstreams: 1 2011 - Ana Carolina da Rocha Lessa.pdf: 971805 bytes, checksum: 6b27d87a76d22e722a8c9ffc1fcc53c1 (MD5)

Made available in DSpace on 2020-09-22T12:01:21Z (GMT). No. of bitstreams: 1 2011 - Ana Carolina da Rocha Lessa.pdf: 971805 bytes, checksum: 6b27d87a76d22e722a8c9ffc1fcc53c1 (MD5) Previous issue date: 2011-02-28

Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior, CAPES, Brasil.

Brazil stands about livestock worldwide, with a herd of about 200 million head. The national inventory of greenhouse gases shows that the excreta produced in pasture represents about 40% of total emissions of N2O, quantified from IPCC global data, which may not represent the real impact of the country livestock in the gas emissions. Thus, this study aimed to quantify direct emissions of N2O and N losses through volatilization of NH3 from urine and dung on pasture in Cerrado environment and on Oxisol, in Goi?s State, and on Atlantic forest in an Ultisol, Rio de Janeiro State. The influence of soil and climate variables in this process was also evaluated. The study was conducted in experimental areas at Embrapa Agrobiologia, municipality of Serop?dica - RJ, and Embrapa Arroz e Feij?o, Santo Ant?nio de Goi?s - GO. The areas were divided into 18 plots, with three treatments and six replicates, which consisted of plots with faeces, urine and control. In the rainy season, for the first experiment in Goi?s, a treatment with urea (100 kg ha-1 of N) was included, totalizing 24 plots. One litre of urine and approximately 1.8 kg of fresh faeces were added to the respective treatments, by placing them inside the area enclosed by the metal base of closed static chambers used for N2O sampling. In the area adjacent to each chamber, the same treatments were applied to evaluate NH3 volatilization, soil moisture, mineral nitrogen and temperature. Urine clearly increased soil N2O fluxes especially after the frequent rains in Serop?dica and Santo Antonio de Goi?s. Regardless of location, rainfall and the increased availability of mineral N in urine treatment were key factors for occurrence of high N2O fluxes compared to other treatments. During the monitoring periods, emissions from 3.92 to 1045.55 mg N2O-N m-2 were found for treatments with application of urine, accounting for 0.01% and 2.55% of applied N. Even though the high N content in faeces, they did not result in high N2O emissions, which were between 0.56 and 24.46 mg N2O-N m-2, representing 0% and 0.16% of the applied N. The highest and lowest N2O emissions from the excreta were recorded in Santo Antonio de Goi?s for the rainy season. Ammonia volatilization from urine ranged from 2.56 to 169.91 g NH3-N m-2, representing respectively 6.8% and 50.6% of N from excreta. For the faeces, the amounts ranged from 2.38 to 130.26 g NH3-N m-2, representing respectively 2.6% and 12.7% of the total N from this source. It was concluded that urine and faeces do not contribute…

Submitted by Celso Magalhaes ([email protected]) on 2020-07-23T14:37:56Z No. of bitstreams: 1 2011 - Jerusa Maia e S?.pdf: 1610240 bytes, checksum: d65e971c666607448b67717fc9a17d56 (MD5)

Made available in DSpace on 2020-07-23T14:37:56Z (GMT). No. of bitstreams: 1 2011 - Jerusa Maia e S?.pdf: 1610240 bytes, checksum: d65e971c666607448b67717fc9a17d56 (MD5) Previous issue date: 2011-11-30

Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico - CNPq

The occupation of the Cerrado biome in Brazil has been driven by the expansion of agriculture. Research to improve the low fertility of the soil along with plant breeding, resulted in an increase in cultivated area, especially after the 80 and 90. Management such as conservation tillage, crop rotation with leguminous, crop-livestock and notillage system can promote the accumulation of C and N in the soil profile and show better efficicency in the use of non-renewable energy resources. These systems are also promising for mitigate the emission of greenhouse gases. This study aimed to evaluate the energy efficiency of different management systems and land use and its influence on the stocks of C and N in the profile of a long-term experiment located at Embrapa Cerrados, in the city of Planaltina ? DF. The studied soil was an Oxisol, where in 1991 an area of native Cerrado was converted into different production systems. The treatments were: continuous grazing grass-only (S1) continuous grazing mixed grass/legume (S2), crop livestock, started with pasture rotation (S3P), crop-livestock, beginning with crop rotation (S3L) and continuous crop (S4). In grain production, we used the no-tillage and conventional tillage. The treatments continuous grazing grassonly and continuous crop with conventional tillage had a lower potential to accumulate C and N in the soil, since the treatments crop-livestock started with pasture rotation and conventional tillage, crop-livestock beginning with crop rotation under no-tillage system and continuous crop with conventional tillage, were more suitable. The systems incorported brachiaria pastures with of 25% and 32% of C residues derived from the total C stock of 0-100 cm in continuous grazing grass-only and mixed grass-legume, respectively. The no-tillage system in continuous crop and crop-livestock systems allowed greater preservation of C derived from the C3 plants, and reduction in soil disturbance was important for the increase of total C in the soil profile The cotinuous grazings sohwed higher energy efficiency, while the system of continuous crop obtained the lowest indexes. In the treatmens of crop-livestock, the conventional tillage had conversion energy than the no-tillage. No-tillage system showed better efficiency in the production of biofuels that conventional tillage. All systems were assessed to be sustainable in terms of energy. The crop-livestock and no-tillage systems can be adopted as conservationists regarding the accumulation/maintenance of soil organic matter, and for greater…

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Made available in DSpace on 2018-11-23T13:21:30Z (GMT). No. of bitstreams: 1 2010 - Francisco de Assis Ver?osa Amorim.pdf: 5628732 bytes, checksum: d364ebc6a63abdbee270f31843fb3d0a (MD5) Previous issue date: 2010-10-21

Within this study, we aimed the participation of students on thirth year of Agriculture Course in order to awaken, them and through them, the interest of the community surrounding Federal Agrotechnical School of Satuba/AL for the use of alternative materials, available at this micro-region, for construction of rural breeding of family subsistence, through alternative techniques of rustic construction, using " knowledge development " and "design methodology". Faced with this challenge, the work was organized in four stages. At first stage, there was the involvement of students through a questionnaire about the possibility of using alternative materials for rural construction, such as fibers, palm leaves, polypropylene fiber raffia bags, old tires, PET, clay, etc., followed by the presentation of examples of rustic buildings and facilities for housing animals, reported in the literature, on the Internet and orally among the inhabitants of Satuba micro-region. In the second stage, we seek "knowledge development? based on the construction of diverse animal facilities for family subsistence production, using alternative materials found in Satuba micro-region, together with the community. In the third period, we reviewed, cataloged, organized and worked out an institutional document, as an embryonic proposed model of rustic facilities for breeding, using techniques and alternative materials, developed at the collective research, in order to boost an entire productive circle, from the collection of these materials until the construction of rural facilities for animal production, thus occupying families in an alternative activity, environmentally adequated, without requiring large investments. On fourth stage, we sought to evaluate the change that the experience of rural buildings construction with alternative materials had on the students. It was concluded that the proposal is viable and can be incorporated into the community, with students help, as a process of knowledge elaboration.

No presente trabalho, buscou-se a participa??o de alunos dos terceiros anos do Curso de Agropecu?ria com o intuito de despertar, neles e por meio deles, o interesse da comunidade circunvizinha ? Escola Agrot?cnica Federal de Satuba/AL, para a utiliza??o dos materiais alternativos dispon?veis na sua microrregi?o, para constru??o de instala??es rurais de cria??es de animais de subsist?ncia familiar. Para isso se usou as t?cnicas alternativas r?sticas de constru??o civil, as quais foram ?desconstru?das? e ?reconstru?das? atrav?s da ?elabora??o do conhecimento? e da ?metodologia de projetos?…