Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2018-08-02T15:53:51Z No. of bitstreams: 1 2017 - Ana Carolina Mendes Bezerra.pdf: 1946898 bytes, checksum: 5eac08b2a62141f12ea8b97452156ae3 (MD5) / Made available in DSpace on 2018-08-02T15:53:54Z (GMT). No. of bitstreams: 1 2017 - Ana Carolina Mendes Bezerra.pdf: 1946898 bytes, checksum: 5eac08b2a62141f12ea8b97452156ae3 (MD5) Previous issue date: 2017-02-16 / Irrigation acts as an important factor to reduce risks and increase productivity in agricultural crops. However, due to increasing water scarcity and the waste of water practiced by many farmers, there is great concern about the negative impacts of this technique on the productive sector, generating the need to establish a balance between agricultural productivity and the preservation of natural resources. In this scenario, studies related to water economics are inserted through more sustainable types of irrigation management. The objective of this study was use the Simplified Irrigation Controller sensor positioned in the atmosphere, to control the irrigation of lettuce seedlings based on the variation of water vapor pressure. The performance of the adaptation was evaluated by monitoring plant parameters, as well as, water use efficiency (WUE). The device was evaluated with the ceramic sensor positioned outside the substrate, in the atmosphere adjacent to the production trays, seeking to correlate the applied water with the vapor pressure deficit (VPD) observed at the experiment site. The seeds of the Regina cultivar were sown in polystyrene trays (200 cells) with substrate used in organic cultivation. A randomized block design was used in a factorial scheme where factor A were four adjustments of the SIC (3.5; 5, 6.5 and 8kPa) and factor B were the two evaluation periods (from July 8 to August 8 and September 16 to October 16, both in 2016) with four replications, totaling 32 plots (experimental units). Parameters related to the growth and physiology of the crop was evaluated, such as: fresh mass, dry mass, water use efficiency, chlorophyll fluorescence parameters and stomatal conductance. The results were submitted to analysis of variance and in the presence of significant interaction a Sliced- analysis was carried out for each factor. Scott-Knott test was used to determine significance with the cut off at 5%.Biometric and physiological variables tested showed a decrease as the tested tensions were increased. The 3.5 kPa tension showed a higher potential for producing more vigorous seedlings, presenting WUE with an average value of 1.37 g L-1 and producing a seedling with approximately 32.4 mL of water in the second experimental period. The cultivation of lettuce seedlings is possible in both experimental periods. The results show the availability of the use of the SIC with atmospheric sensor and compatibility of the applied water volume applied with the observed VPD / A irriga??o atua como importante fator de redu??o de risco e incremento na produ??o de culturas agr?colas. Por?m, devido ? crescente escassez h?drica e ao desperd?cio de ?gua praticado por grande parte dos agricultores, h? uma grande preocupa??o em rela??o aos impactos negativos dessa t?cnica, gerando a necessidade de se estabelecer um equil?brio entre a produtividade agr?cola e a preserva??o dos recursos naturais. Nesse cen?rio se inserem estudos relacionados com efici?ncia h?drica por meio de tipos de manejo da irriga??o mais sustent?veis. O objetivo desse estudo foi utilizar o sensor do Acionador Simplificado de Irriga??o (ASI) na atmosfera para controlar a irriga??o de mudas de alface baseando-se na varia??o de press?o de vapor da ?gua. O desempenho da adapta??o foi avaliado por meio do monitoramento de par?metros na planta, bem como, da efici?ncia de uso da ?gua (EUA). O acionador foi avaliado com o sensor cer?mico posicionado fora do substrato, na atmosfera adjacente superior as bandejas de produ??o, buscando correlacionar a ?gua aplicada com o d?ficit de press?o de vapor observado nesse local. As sementes da cultivar Regina foram semeadas em bandejas de isopor (200 c?lulas) com substrato utilizado em cultivo org?nico. Foi utilizado o delineamento experimental de blocos casualizados, em esquema fatorial, onde o fator A foi quatro regulagens do acionador (3,5; 5; 6,5 e 8 kPa) e o fator B as duas ?pocas de avalia??o (de 8 de julho a 8 de agosto e 16 de setembro ? 16 de outubro, ambas no ano de 2016), com quatro repeti??es, totalizando 32 parcelas. Foram avaliados par?metros referentes ao crescimento e fisiologia da cultura, quais sejam: massa fresca, massa seca, par?metros de cin?tica da fluoresc?ncia da clorofila a e condut?ncia estom?tica, al?m da EUA. Os resultados foram submetidos ? an?lise de vari?ncia e na presen?a de intera??o significativa foi realizada nova an?lise de vari?ncia com desdobramento dos graus de liberdade. Teste de Scott-Knott foi usado para determina??o de signific?ncia a 5% de probabilidade. As vari?veis biom?tricas e fisiol?gicas avaliadas apresentaram decr?scimo conforme foram aumentadas as tens?es de acionamento. A tens?o 3,5 kPa mostrou maior potencial para produ??o de mudas mais vigorosas, apresentando EUA com valor m?dio de 1,37 g L-1 e produzindo uma muda com aproximadamente 32,4 mL de ?gua na segunda ?poca experimental. O cultivo de mudas de alface mostra-se poss?vel nas duas ?pocas experimentais. Os resultados mostram a viabilidade do uso do acionador com sensor atmosf?rico e compatibilidade do volume de ?gua aplicado com o d?ficit de press?o de vapor da atmosfera observado.

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2018-08-16T16:28:19Z No. of bitstreams: 1 2010 - Maria C?lia L?cio da Silva.pdf: 2808442 bytes, checksum: cb82e6fcb2d0499fc6d0ee7f1bcc87c6 (MD5) / Made available in DSpace on 2018-08-16T16:28:20Z (GMT). No. of bitstreams: 1 2010 - Maria C?lia L?cio da Silva.pdf: 2808442 bytes, checksum: cb82e6fcb2d0499fc6d0ee7f1bcc87c6 (MD5) Previous issue date: 2010-10-08 / In this study we used the chain of production of cassava as a pedagogical element to stimulate and sensitize students to the technical course of agroindustria of the Federal Institute of Pernambuco-campus Victoria, on the importance of culture in their training, considering its social, economic and for the social center of the Forest Region of the state of Pernambuco, where the cultivation and processing of cassava agro comprise the universe of family farming. This is also the source region of Vitoria-campus students. The study was conducted with the students of 2nd year course in Agroindustria in the space for the experience of the discipline of cassava technology that makes up the curriculum of the course is a survey of quantitative and qualitative. For quantitative evaluation, we used a structured questionnaire with with affirmative questions about the theoretical and practical knowledge of the units built with such subjects, and measured using a Likert scale. Analyses included the first two moments, considered test T1, at the beginning of the course and the second T2 tests at the end of the semester when you close the activities of the discipline. In qualitative evaluation, we chose to use the educational contest in which students split into groups to address the following issues: social, economic and cultural of cassava. For this activity, students had to organize themselves to do your research to make their experimental tasks. The results were presented at an event at the institution and evaluated according to the tasks proposed, theatrical presentation, seminar, poetry and music, with a thematic approach. We found that experienced in the course content was able to awaken the student to the problems experienced by small producers in the region which has in the cultivation and processing of cassava, since the same grounds engaged in seeking, through research with the units producers and farmers, so that their knowledge would be consolidated in practice, which was observed with the presentation of the tasks of the contest. In the assessment made by the student in their statements, they indicated that the method provided a better understanding of course content, and that the visit helped to strengthen their learning. Thus, the method used for this work has contributed to building a more critical awareness, facing the problem of a chain of cassava agro-industry which is of importance in the training of students in the technical course of agroindustria of IFcampus Vitoria. / Neste estudo foi utilizada a cadeia produtiva da mandioca como elemento pedag?gico para estimular e sensibilizar os alunos do curso t?cnico de agroind?stria, do campus Vitoria do Instituto Federal de Pernambuco, sobre a import?ncia desta cultura na sua forma??o t?cnica, considerandoseus aspectos s?cio, econ?mico e social para a Regi?o da Mata Centro do estado de Pernambuco, onde o cultivo e o processamento da mandioca comp?em o universo agroindustrial da agricultura familiar. Esta ? tamb?m a regi?o de origem dos alunos do campus Vitoria. A investiga??o foi realizada com os alunos do 2? ano do curso T?cnico em Agroind?stria no espa?o destinado a vivencia da disciplina Tecnologia da mandioca que comp?e a matriz curricular do curso sendo a uma pesquisa de natureza quantitativa e qualitativa. Para a avalia??o quantitativa, usouse um question?rio estruturado com afirmativas sobre os conhecimentos te?ricos e pr?ticos constru?do com as unidades da referida disciplinas, sendo mensurada atrav?s de uma escala de Likert. Esta avalia??o compreendeu dois momentos o primeiro, considerado teste T1, no inicio da disciplina e o segundo testes T2 no final do semestre quando se encerram as atividades da disciplina. Na avalia??o qualitativa, optou-se por usar a gincana pedag?gica, na qual os alunos de dividiram em grupos para atender as tem?ticas social, econ?mica e cultural da mandioca. Para esta atividade, os alunos tiveram que se organizar para fazer a sua pesquisa experimental para compor suas tarefas. Os resultados foram apresentados em um evento na Institui??o, e avaliados conforme o cumprimento das tarefas propostas de: apresenta??o teatral, semin?rio, poesia e m?sica, com a abordagem da tem?tica. Verificamos que o conte?do vivenciado na disciplina foi capaz de despertar o aluno para a problem?tica vivida pelos pequenos produtores da regi?o que tem no cultivo e no processamento da mandioca, uma vez que, os mesmo se empenharam em buscar fundamentos, atrav?s da investiga??o com as unidades produtores e os agricultores familiares, para que os seus conhecimentos fossem consolidados na pr?tica, o que foi observado com a apresenta??o das tarefas da gincana. Na avalia??o feita pelo aluno, em seus depoimentos, eles indicaram que o m?todo usado proporcionou uma melhor compreens?o dos conte?dos da disciplina, e que a visita colaborou para fortalecer a sua aprendizagem. Assim, o m?todo usado para a realiza??o deste trabalho, contribuiu com a constru??o de uma consci?ncia mais cr?tica, voltada para a problem?tica de uma cadeia agroind?stria da mandioca que ? de import?ncia na forma??o dos alunos do curo t?cnico em agroind?stria do IFPE ? campos Vitoria.

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2018-08-20T13:21:14Z No. of bitstreams: 1 2010 - Maria Nubia Gomes de Lucena Pereira.pdf: 3051812 bytes, checksum: 81841ffaf806c12662c2ec81c36821cc (MD5) / Made available in DSpace on 2018-08-20T13:21:14Z (GMT). No. of bitstreams: 1 2010 - Maria Nubia Gomes de Lucena Pereira.pdf: 3051812 bytes, checksum: 81841ffaf806c12662c2ec81c36821cc (MD5) Previous issue date: 2010-10-08 / This work has analyzed the contribution of the development of activities of a research project applied in the teaching-learning process, hoping that the students of the Technical Course in Agroindustry of the Federal Institute of Education, Science and Technology ? Campus Iguatu, in the class of fruits and vegetables processing as active agents, comprehend and solidify their knowledge. In that sense, students of the Technical Course in Agroindustry produced teaching materials that could be used for the capacity of the producers of Vila Cajazeiras, with formulation techniques that could assemble value to the fruit of umbucaj? (Spondias sp). To evaluate the pedagogical process, two groups of 16 students have been created. The first group consisted of students from the Technical Course in Agroindustry with the curriculum in the integrated course (test group) and the second, students from the Technical Course in Agroindustry with the curriculum in the modulated course (control group). These students had already taken the class of fruits and vegetables processing the semester before. The evaluation method used was to evaluate the attitude of the individual, building a questionnaire about the umbu-caj? fruit with affirmatives referent to the necessary concepts and knowledge to comprehend these steps. This instrument has been applied in three different steps. For the control group, the instrument has been applied only once. In the extension activity, 16 people from the community have participated. The students were evaluated by the producers that participated in the extension activity. The processed product, nectar of umbu-caj?, has been evaluated referencing the physical-chemical, sensorial and microbiological parameters. In the physical-chemical determinations, the current legislation has been used to compare the results. In the sensorial evaluations, accepting tests have been used. As for the teaching-learning process, it has been observed that the test scores for each subject have been gradually rising as the learning would materialize, reaching the final test with more homogeneous answers. The medium scores were 4,8; 5,2 and 6,9 for T1, T2 and T3, respectively. As the students were being inserted in the context of the contemplated units of the class, it has been noted that the developed activities contributed to elevate their knowledge. In the control group the learning level was lower than in the test group. The results of the second group (control group) indicate that the students of the first group (test group) obtained higher comprehension of the proposed activities in this project, making this student search for interdisciplinary, produce his own learning, establish non-traditional pedagogical relations and learn new methods to assimilate new information and processing technologies of the umbu-caj? fruit, to better support its proposed work. Therefore, this work was important to link the student to the researching world, making him an active agent of all the process, assigning him with responsibility and making it possible for him to create different ways of constructing his own knowledge. / O presente trabalho analisou a contribui??o do desenvolvimento de atividades de um projeto de pesquisa aplicado no processo de ensino-aprendizagem, esperando-se que os estudantes do Curso T?cnico em Agroind?stria do Instituto Federal de Educa??o, Ci?ncia e Tecnologia - Campus Iguatu, da disciplina de processamento de frutos e hortali?as, como agentes ativos, compreendessem e solidificassem o conhecimento. Nesse sentido, estudantes do Curso T?cnico em agroind?stria produziram o material did?tico que pudesse ser utilizado para a capacita??o dos produtores da Vila Cajazeiras, com t?cnicas de formula??es para que eles pudessem agregar valor ao fruto do umbu-caj? (Spondias sp). Para avaliar o processo pedag?gico, foram constitu?dos dois grupos de 16 estudantes, sendo o primeiro do Curso T?cnico em Agroind?stria da matriz curricular do Curso integrado (Grupo Teste) e o segundo, por alunos do Curso T?cnico em Agroind?stria da matriz curricular do curso modulado (Grupo Controle). Esses alunos j? haviam cursado a disciplina de processamento de frutos e hortali?as no semestre anterior. Utilizou-se o m?todo de avalia??o de atitude do indiv?duo construindo-se question?rio relativo ao fruto do umbu-caj? com afirmativas referentes aos conceitos e conhecimentos necess?rios para compreender estas etapas. Esse instrumento foi aplicado em tr?s etapas diferentes. Para o Grupo controle, o instrumento foi aplicado apenas uma vez. Na atividade de extens?o participaram 16 pessoas da comunidade. Os alunos foram avaliados pelos produtores que participaram da atividade de extens?o. O produto processado, n?ctar de umbu-caj?, foi avaliado em rela??o aos par?metros f?sico-qu?micos, sensoriais e microbiol?gicos. Nas determina??es f?sico-qu?micas, para comparar os resultados, utilizou-se a legisla??o vigente. Nas avalia??es sensoriais, utilizaram-se testes de aceita??o. Quanto ao processo de ensino-aprendizagem, verificou-se que a m?dia para cada sujeito foi aumentando gradativamente nos testes, ? medida que a aprendizagem se concretizava, chegando ao ?ltimo teste com uma maior homogeneidade nas respostas, cujas m?dias foram 4,8; 5,2 e 6,9 para T1, T2 e T3, respectivamente. Na medida em que os alunos foram sendo inseridos no contexto das unidades contempladas na disciplina, verificou-se que as atividades desenvolvidas contribu?ram para elevar seu n?vel de conhecimento. O Grupo Controle o n?vel de aprendizagem foi menor do que no grupo teste. Os resultados obtidos no segundo grupo (grupo controle) indicaram que os estudantes do primeiro grupo (grupo teste) obtiveram melhor compreens?o das atividades propostas neste projeto, proporcionando a esse aluno buscar a interdisciplinaridade, produzir seus pr?prios conhecimentos, estabelecer rela??es pedag?gicas n?o-tradicionais e aprender outro m?todo para assimilar novos conhecimentos e tecnologias de processamento do fruto de umbu-caj?, para melhor fundamentar a sua proposta de trabalho. Portanto, o trabalho foi importante para vincular o estudante ao mundo da pesquisa, fazendo-o um agente ativo de todo o processo, atribuindo-lhe responsabilidade e possibilitando-lhe um modo diferente de construir seu pr?prio conhecimento.

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2018-08-20T14:30:41Z No. of bitstreams: 1 2010 - Maristella Martineli.pdf: 1214722 bytes, checksum: cccf10ab7c5117e38284ec2878f3a0a6 (MD5) / Made available in DSpace on 2018-08-20T14:30:41Z (GMT). No. of bitstreams: 1 2010 - Maristella Martineli.pdf: 1214722 bytes, checksum: cccf10ab7c5117e38284ec2878f3a0a6 (MD5) Previous issue date: 2010-02-26 / Funda??o Carlos Chagas Filho de Amparo ? Pesquisa do Estado do RJ, FAPERJ, Brasil. / The experiment was conducted at the Postharvest Laboratory of UFRRJ, aiming to observe the effects of competition of the processes of irradiation and climatization sequences, on the maturation of banana 'Prata' and 'Prata an??. For the treatments, the fruits were separated into two lots. The first batch was taken to Centro Tecnol?gico do Ex?rcito (CTEx), in Rio de Janeiro, to receive doses of 0.25 kGy and 0.50 kGy in irradiator with a source of 137Cs. The second batch remained in the Postharvest Laboratory, and were underwent to exposure of calcium carbide in a dose of 7 g m-?. Part of the first batch returned to the Laboratory, being exposed under the same conditions and doses of calcium carbide. In the same manner described above, part of the second batch was taken to CTEx for exposure to the same doses of gamma radiation from the first batch. Two experiments were conducted separately. In both experiments, we evaluated the skin color, index of diseases, weight loss, firmness, peel chlorophyll, acidity, starch, soluble solids, enzymatic activity (pectinmetilesterase) and respiratory activity. In the first experiment, fruits of banana 'Prata' underwent a randomized design in factorial 8x5, except for evaluations of starch and pectinmetilesterase (8x3) and firmness (8x2). The average temperature of storage was 27 ? C. In experiment two, fruits of banana 'Prata-dwarf "were also subjected to completely randomized design with 8x5 factorial design (skin color, index and weight loss) and 8x3 for the other variables. The average temperature of storage was 23 ? C. In Experiments 1 and 2 for respiratory activity, we used a split plot design in time, with six replicates. Under the conditions of this study, the fruits obtained in the region of Angra dos Reis, Rio de Janeiro showed no positive responses in terms of quality with the application of irradiation, suggesting that the inappropriate handling of the fruits in the field, significantly influenced the results in post-harvest when the irradiation was used as a process to increase their useful life. The sequence of processes used, climatization and irradiation, regardless of the order, did not show different effects, since the fruits of both cultivars showed similar behavior during storage. More evident for the banana ?Prata-an??, treatment with gamma radiation at 0.25 kGy dose alone was effective in slowing the processes that lead to maturity / O experimento foi conduzido no Laborat?rio de P?s-Colheita da UFRRJ, com os objetivos de observar os efeitos da competi??o dos processos de irradia??o e climatiza??o seq?enciais, sobre a matura??o banana ?Prata? e ?Prata-an?. Para aplica??o dos tratamentos, os frutos foram separados em dois lotes. O 1? lote foi levado ao Centro Tecnol?gico do Ex?rcito no RJ (CTEx) para receber as doses de 0,25 kGy e 0,50 kGy em irradiador com fonte de 137Cs. O 2? lote permaneceu no Laborat?rio de P?s-Colheita, no qual foram submetidos ? exposi??o do carbureto de c?lcio na dose de 7 g m-?. Parte do 1? lote retornou ao Laborat?rio de P?s-Colheita, sendo exposta, nas mesmas condi??es e doses do carbureto de c?lcio. Da mesma forma descrita anteriormente, parte do 2? lote foi levado ao CTEx para exposi??o ?s mesmas doses de radia??o gama do 1? lote. Foram realizados dois experimentos separadamente. Nos dois experimentos, avaliou-se a colora??o da casca, ?ndice de doen?as, perda de massa fresca, firmeza, clorofila total da casca, acidez titul?vel, amido, s?lidos sol?veis totais, atividade enzim?tica (pectinametilesterase) e atividade respirat?ria. No experimento 1, frutos de banana ?Prata? foram submetidos a um delineamento inteiramente casualizado, em esquema fatorial 8x5, exceto para as avalia??es de amido e pectinametilesterase (8x3) e firmeza (8x2). A temperatura m?dia de armazenamento foi de 27? C. No experimento 2, frutos de banana ?Prata-an?? tamb?m foram submetidos ao delineamento inteiramente casualizado com esquema fatorial 8x5 (cor casca, ?ndice de doen?as e perda de massa fresca) e 8x3 para as demais vari?veis. A temperatura m?dia de armazenamento foi de 23? C. Nos experimentos 1 e 2, para a atividade respirat?ria, utilizou-se esquema de parcela subdividida no tempo, com 6 repeti??es. Nas condi??es do presente trabalho os frutos obtidos na regi?o de Angra dos Reis/RJ n?o apresentaram respostas positivas em termos de qualidade com a aplica??o da irradia??o, denotando que o manejo inadequado dos frutos em campo, influenciou significativamente nos resultados em p?s-colheita quando a irradia??o foi utilizada como processo para aumentar a vida ?til dos mesmos. A sequ?ncia dos processos utilizados, climatiza??o e irradia??o, independente da ordem, n?o apresentou efeitos diferenciados, uma vez que, os frutos, de ambas as cultivares, apresentaram comportamento semelhante durante o armazenamento. De forma mais evidente para a banana ?Prata-an??, o tratamento com radia??o gama na dose 0,25 kGy isolada foi eficiente em retardar os processos que levam ao amadurecimento.

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2018-08-22T11:24:50Z No. of bitstreams: 1 2010 - Vin?cius Machado dos Santos.pdf: 995846 bytes, checksum: 696b6b0e2360cb9f5762b0890f9801b2 (MD5) / Made available in DSpace on 2018-08-22T11:24:50Z (GMT). No. of bitstreams: 1 2010 - Vin?cius Machado dos Santos.pdf: 995846 bytes, checksum: 696b6b0e2360cb9f5762b0890f9801b2 (MD5) Previous issue date: 2010-09-03 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior, CAPES, Brasil. / A study was carried out to evaluate the use of Saccharomyces cerevisiae cell wall (SCCW) as an anti-mycotoxin additive in broiler chicks? diets slaughtered at 22 day age on performance, carcass characteristics and organ weights. It was used a randomized complete block design with four treatments in a factorial 2 (with aflatoxin, without aflatoxin) x 2 (with adsorbent, without adsorbent). For the performance parameters evaluated, there was a significant difference only on feed intake, when the SCCW was added to the rations. There was no interaction between aflatoxin and SCCW factors in the diet on the performance variables studied. The addition of SCCW to the chicks? diets stimulated the feed intake during 1-21 days of age. However, that did not reflect a significant increase in weight gain, or a change in feed conversion. There was a significant interaction between factors aflatoxin and SCCW on the weight post-fasting, cold carcass weight and thigh+upper weight. For the absolute hot carcass weights, breast, back and wings and carcass yields and relative weights of the cuts it was not observed a significant interaction between factors. The growth performance of broilers in the period 1-21 days old was not influenced by the levels of aflatoxin and SCCW factors used in experimental diets. Nevertheless for body weight after fasting, the cold carcass weight and absolute weight of the thigh + drumstick, the SCCW acted as an anti-mycotoxin additive by minimizing the aflatoxin toxicity. / Objetivou-se com este experimento avaliar a utiliza??o da parede celular de Saccharomyces cerevisiae (PCSC) como aditivo antimicotoxina em ra??es destinadas a frangos de corte abatidos aos 22 dias de idade sobre o desempenho, caracter?sticas de carca?a e pesos de ?rg?os. Foi adotado um delineamento experimental em blocos casualizados, com 4 tratamentos dispostos em um esquema fatorial 2 (sem aflatoxina; com aflatoxina) x 2 (sem adsorvente; com adsorvente). Para os par?metros de desempenho avaliados, observou-se diferen?a significativa apenas sobre o consumo alimentar, quando a PCSC foi adicionada ?s ra??es. N?o houve intera??o entre os fatores aflatoxina e PCSC nas ra??es sobre as vari?veis de desempenho estudadas. A adi??o de PCSC ? ra??o dos frangos estimulou o consumo de ra??o no per?odo de 1 a 21 dias de idade, entretanto, isso n?o se refletiu em aumento significativo no ganho de peso dos frangos ou altera??o na convers?o alimentar. Houve intera??o significativa entre os fatores aflatoxina e PCSC sobre o peso vivo p?s-jejum, carca?a resfriada e o peso da coxa+sobrecoxa. Para os pesos absolutos de carca?a quente, peito, dorso e asas, rendimento das carca?as e pesos relativos dos cortes n?o se observou intera??o significativa entre os fatores estudados. O desempenho zoot?cnico de frangos de corte no per?odo de 1 a 21 dias de idade n?o foi influenciado pelos n?veis dos fatores aflatoxina e PCSC utilizados nas ra??es experimentais. J? para peso vivo p?s-jejum, peso da carca?a resfriada e peso absoluto da coxa+sobrecoxa, houve uma poss?vel atua??o da PCSC como aditivo antimicotoxina, ao minimizar a a??o t?xica da aflatoxina.

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2018-08-24T12:57:37Z No. of bitstreams: 1 2010 - Roberta Prates Belem.pdf: 2832998 bytes, checksum: 8f3e43b92b370beb4b55a175c8605f21 (MD5) / Made available in DSpace on 2018-08-24T12:57:37Z (GMT). No. of bitstreams: 1 2010 - Roberta Prates Belem.pdf: 2832998 bytes, checksum: 8f3e43b92b370beb4b55a175c8605f21 (MD5) Previous issue date: 2010-11-05 / It is known that environmental issues are increasingly being focus of attention and discussion in society and, in this context, it can be said that the pedological study from the concept, evolution, formation and use of soil is essential in the context for the referring discussions to the society and nature, that are pertinent subjects to the Geographic Science, mainly in the Basic Education that acts in the formation, abilities and competences. For this reason, the study of Pedology becomes in such a way primordial in the scope of formal education (as for example the content of the PCN?s), as well as in the informal education, approaching the importance of its knowledge for the conservation, being this essential to the premises of a sustainable use. It is worth standing out that, although there is an effort of the Geography teachers in the treatment of teaching the soils related do nature in the Medium Education and mainly in contents of the didactic books, we come across problems of understanding and transposition of concepts, of partial and inconsistent explanations and that is several times unstable for the understanding of the processes and their formation. It can be said that in this context one of the most used instruments in the teaching-learning process is the didactic book, which has as its main use to present the study of contents, to motivate activities that allow the construction of knowledge from the reflection and solution of activities, from the observation of phenomena, from events and facts in different scales of the analysis, thus bringing about the development of the creativity and the criticism. Thus aiming at improving the quality of the didactic books in 2006, the Ministry of Education ? MEC ? established criteria for the adoption of this material of Geography through the National Program of the Didactic Book for the Medium Education ? PNLEM for 2007. The fifteen (15) didactic Geography books of the Medium Education recommended by MEC were analyzed exclusively in its aspect of Pedology, but specifically in the subject soil. In the works in question, the approaches of each author on the contents related to Pedology were analyzed and pointed out, as many solutions were provided, in the attempt to supply the necessity of understanding the contents of use and importance of its study. It is suggested thus a better organization and deepening of the subject in didactic books in order to stimulate the interest of the pupil, making him understand the relation and the importance of the subject to the daily questions of the world. / Sabe-se que as quest?es ambientais v?m cada vez mais sendo foco de aten??o e discuss?o na sociedade, e neste contexto pode-se dizer que o estudo pedol?gico a partir do conceito, evolu??o, forma??o e uso de solo ? essencial no contexto para as discuss?es referentes ? sociedade e natureza, que s?o temas pertinentes ? Ci?ncia Geogr?fica, principalmente no Ensino B?sico que atua na forma??o, habilidades e compet?ncias. Por esse motivo, o estudo da pedologia torna-se primordial tanto no ?mbito do ensino formal (como por exemplo, conte?do dos PCN?s), assim como na educa??o informal abordando a import?ncia de seu conhecimento para a conserva??o, sendo este, essencial ?s premissas de um uso sustent?vel. Cabe ressaltar que embora haja um esfor?o no tratamento do ensino de solos relacionado ? natureza em n?vel do Ensino M?dio pelos professores de geografia, e principalmente nos conte?dos dos livros did?ticos, depara-se com problemas de entendimento e transposi??o de conceitos, de explica??es parciais e inconsistentes, e que por diversas vezes ? inconsistente para a compreens?o dos processos e de sua forma??o. Pode-se dizer que neste contexto um dos instrumentos mais utilizados no processo de ensino-aprendizagem ? o livro did?tico, o qual tem como a utiliza??o para apresentar o estudo de conte?dos, motivar atividades que permita a constru??o do conhecimento, a partir da reflex?o e solu??o de atividades, da observa??o de fen?menos, de acontecimentos e fatos em diferentes escalas da an?lise, acarretando assim no desenvolvimento da criatividade e da cr?tica. Desta forma, visando melhorar a qualidade dos livros did?ticos em 2006 o Minist?rio da Educa??o ? MEC, estabeleceu crit?rios para ado??o desse material de Geografia atrav?s do Programa Nacional do Livro Did?tico para o Ensino M?dio ? PNLEM para 2007. Os quinze (15) livros did?ticos de Ensino M?dio de Geografia recomendados pelo MEC, foram analisados exclusivamente em sua abordagem de Pedologia, mas especificamente no tema Solos. Nas obras, em quest?o, foram analisadas e apontadas as abordagens de cada autor sobre os conte?dos relacionados a pedologia, tanto solu??es fornecidas na tentativa de suprir a necessidade de entendimento quanto a conte?dos de uso e import?ncia se seu estudo. Sugere-se assim, uma melhor organiza??o e aprofundamento do assunto nos livros did?ticos, a fim de despertar o interesse do aluno, fazendo-o entender a rela??o e a import?ncia do tema com as quest?es cotidianas do mundo.

Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2018-09-04T12:42:00Z No. of bitstreams: 1 2017 - Isabela Batista de Medeiros.pdf: 1181183 bytes, checksum: bdd5bab5dcf737645848c0fe2fbaa991 (MD5) / Made available in DSpace on 2018-09-04T12:42:00Z (GMT). No. of bitstreams: 1 2017 - Isabela Batista de Medeiros.pdf: 1181183 bytes, checksum: bdd5bab5dcf737645848c0fe2fbaa991 (MD5) Previous issue date: 2017-11-08 / When we turn our attention to education we realize that many challenges need to be overcome, among them: problems in the initial formation of the teacher, the higher valorization of the baccalaureate to the detriment of the degrees, the devaluation of the teacher in the social and economic scope, the distance between the University and the School, dichotomy between theory and practice. We then perceive that the initial formation of the future teacher, as well as the continuing and in-service training, is of the utmost importance. For this reason, the incentive of programs such as the Institutional Scholarship Program (PIBID) can help these students, future education professionals, to face with greater certainty the challenges posed by contemporary education within the real need of the school, where problems are common to all who are part of it. In this context, this paper aims to analyze how PIBID influences the training of students of the Geography course of the Multidisciplinary Institute of the Federal Rural University of Rio de Janeiro. / Quando direcionamos nosso olhar para a educa??o percebemos que muitos desafios precisam ser superados, dentre eles: problemas na forma??o inicial do professor, a maior valoriza??o do bacharelado em detrimento das licenciaturas, a desvaloriza??o do professor no ?mbito social e econ?mico, a dist?ncia entre a Universidade e a Escola, dicotomia entre a teoria e a pr?tica. Percebemos ent?o o quanto a forma??o inicial do futuro docente, assim como a forma??o continuada e em servi?o, ? de extrema import?ncia. Por isso, o incentivo de programas como o Programa Institucional de Bolsas de Inicia??o ? Doc?ncia (PIBID), podem ajudar esses estudantes, futuros profissionais da educa??o, a enfrentar, com maior seguran?a os desafios postos pela educa??o contempor?nea dentro da real necessidade da escola, onde os problemas s?o comuns a todos que dela fazem parte. Diante deste contexto, este trabalho tem como objetivo analisar como o PIBID influencia na forma??o dos alunos do curso de Geografia do Instituto Multidisciplinar da Universidade Federal Rural do Rio de Janeiro.

Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2018-09-11T12:50:42Z No. of bitstreams: 1 2016 - Eduardo Spitz de Carvalho.pdf: 2778180 bytes, checksum: 34e805f58061af534403ec60b6659541 (MD5) / Made available in DSpace on 2018-09-11T12:50:42Z (GMT). No. of bitstreams: 1 2016 - Eduardo Spitz de Carvalho.pdf: 2778180 bytes, checksum: 34e805f58061af534403ec60b6659541 (MD5) Previous issue date: 2016-03-31 / The municipality of Nova Friburgo is an important producer of brassica, in the Alto Rio Grande region, mainly cauliflower. This culture of great economic value has suffered with the incidence of clubroot causing huge losses, reaching 100% loss. For the prevention of the disease, it is necessary to understand that there is imbalance on the environment and that a change in the soil and crop management is crucial. In the region, young people have great importance in the production process and many of them study in technical courses offered by CEFFA (Centro Familiar de Forma??o por Altern?ncia) Col?gio Estadual Agr?cola (CEA) Rei Alberto I. The courses offered at the school work with the Pedagogy of Alternation. The aim of this study was to build with farmers and their children brassica crop management opportunities for minimizing impact of clubroot disease, with the association of local and academic knowledge. Therefore, we applied two questionnaires, one with 123 students from CEFFA CEA Rei Alberto I to the selection of the Production Units who grow brassicas and present incidence of clubroot, the other one, with 48 students, seeking to characterize the production systems, as for the topography, the main crops, and management strategies used to control the disease. At the end we selected eight production units (PUs) in different watersheds, distributed in the territorial space of the 3rd district, which were characterized by the history of clubroot in the production area, the forms of tillage, acidity correction and fertilization, seedlings source, planting season, crop rotation strategies, source of irrigation water and established strategies for coexistence with clubroot. Later, there were quality assessments of the soil, the health of crops and the potential for clubroot with students and their parents in each of the UPs. Soil samples were collected for fertility analysis. Then, there was a return of the reviews for farmers so they exchanged their joining knowledge. The management practices identified in the production units (PUs) evaluated in the 3rd District of Nova Friburgo- RJ have contributed to the spread and incidence of the disease. To live with the disease a change in the local production system design is necessary, pointing to new strategies regarding the encouragement of biotic and nutritional balance of soil and crop over the pathogen. The use of indicators to assess the local impact of potential hernia of cruciferous was efficient to point out the bottlenecks in the production of brassica system against the disease. The highly acidic pH and low Ca++ content in the soil, associated with frequent mechanization without cleaning the equipment might explain the high incidence of clubroot in the production units. The PUs require monitoring over time through evaluations of agro-ecosystems, using the tools presented in this study, as well as actions aimed at promoting the indicators towards sustainability, thus leading to the balance of soil, crops and biota / O munic?pio de Nova Friburgo ? importante produtor de br?ssicas na regi?o do Alto Rio Grande, principalmente, couve-flor. Esta cultura de grande valor econ?mico para o munic?pio vem sofrendo com a incid?ncia da h?rnia das cruc?feras com preju?zos de at? 100% de perda. Para preven??o da doen?a ? necess?rio o entendimento de que h? desequil?brio no ambiente e que a mudan?a no manejo do solo e da cultura ? imprescind?vel. Na regi?o, os jovens t?m grande import?ncia no processo de produ??o e grande parte desses estuda em cursos t?cnicos no CEFFA (Centro Familiar de Forma??o por Altern?ncia) Col?gio Estadual Agr?cola (CEA) Rei Alberto I, que funcionam com a Pedagogia da Altern?ncia. O objetivo desse trabalho foi construir participativamente junto aos agricultores e seus filhos possibilidades de manejo de cultivo de br?ssicas para o conv?vio com a doen?a h?rnia das cruc?feras, a partir da associa??o de conhecimentos locais e acad?micos. Para tanto, aplicou-se dois question?rios, um com os 123 alunos do CEFFA CEA Rei Alberto I para a sele??o das Unidades Produtivas que cultivam br?ssicas e que apresentam incid?ncia de h?rnia, o outro com 48 desses alunos, buscando caracterizar os sistemas de produ??o, quanto ao relevo, principais cultivos, e estrat?gias de manejo utilizadas para o controle da h?rnia. Ao final foram selecionadas oito unidades de produ??o (UPs) em diferentes microbacias, distribu?das no espa?o territorial do 3? distrito, as quais foram caracterizadas, quanto ao hist?rico da h?rnia das cruc?feras na ?rea de produ??o, formas de preparo do solo, corre??o da acidez e aduba??o, origem das mudas, ?poca do ano de plantio, estrat?gias de rota??o de cultivos, a origem da ?gua de irriga??o e as estrat?gias estabelecidas para a conviv?ncia com a h?rnia das cruc?feras. Posteriormente, foram avaliadas a qualidade do solo, a sanidade dos cultivos e a potencialidade para a h?rnia das cruc?feras, com os alunos e seus pais em cada UP. Foi coletado solos para an?lise de fertilidade. Posteriormente, foram retornadas as avalia??es para que os agricultores trocassem seus saberes. As pr?ticas de manejo identificadas nas unidades de produ??o (UPs) avaliadas do 3? Distrito de Nova Friburgo contribuem para dissemina??o e incid?ncia da doen?a. Para conviv?ncia com a doen?a deve ser mudada a concep??o do sistema produtivo local, apontando para novas estrat?gias para favorecimento do equil?brio bi?tico e nutricional do solo e das culturas em detrimento ao pat?geno. O uso de indicadores para avaliar a potencialidade de incid?ncia local da h?rnia das cruc?feras apontou os gargalos no sistema produtivo de br?ssicas em rela??o a doen?a. Os valores de pH, fortemente ?cidos, e os baixos teores de Ca no solo, associados a mecaniza??o frequente e sem limpeza dos equipamentos explicam a alta incid?ncia da h?rnia das cruc?feras nas unidades produtivas. As UPs necessitam acompanhamento ao longo do tempo, com avalia??es dos agroecossistemas, usando ferramentas como as apresentadas neste estudo, assim como a??es para promo??o dos indicadores no sentido da sustentabilidade, logo o equil?brio do solo, dos cultivos e da biota

Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2018-09-11T13:48:17Z No. of bitstreams: 1 2012 - Jos? Evandro Gerv?sio de Oliveira.pdf: 1339113 bytes, checksum: 157cc8e574872feafeb6d9df50fd7792 (MD5) / Made available in DSpace on 2018-09-11T13:48:17Z (GMT). No. of bitstreams: 1 2012 - Jos? Evandro Gerv?sio de Oliveira.pdf: 1339113 bytes, checksum: 157cc8e574872feafeb6d9df50fd7792 (MD5) Previous issue date: 2012-08-14 / Businesses that involve the creation and use of the horse occupy a prominent position in developed countries and in many those developing countries, like Brazil and Argentina. However, little is known about the configuration of the Horse Agribusiness, particularly their contribution in generating income and jobs. Highlighting the need for studies aimed at the development of this activity and related economic sectors, since the breeding of horse in Brazil is approximately 5.8 million and 2.5 million heads in Argentina. There is a growing interest in scientific research in the production of horses. Agricultural activity in Brazil and Argentina, specifically the production of horses and their derivatives, has great relevance for the economy of both countries. Within this context, there is a chance that the knowledge of this chain is the main factor in the increase of production and generation of employment and income. Thus, this study aims to verify the asymmetries and similarities in the production of horses in southern Brazil (RS) and Argentina, analyzing the productive, health and trade aspects. This is a descriptive study, the multiple case study, which uses empirical research to investigate a contemporary phenomenon. The methodology used during this descriptive study comprised collection, tabulation and analysis of primary and secondary data, through field work and library research. The sample consisted of horses producers in Rio Grande do Sul, Brazil and in Argentina, the intentional type non-probabilistic. The collected data were tabulated in a spreadsheet Excell Version 2010 and for the descriptive analyzes it was used the Statistical Package for Social Science (SPSS Inc. Chicago, Illinois, USA), version 15.0. To complement the statistical analyzes were performed nonparametric analyzes on the observed frequencies. The observed frequencies were evaluated in 2x2 contingency tables. Relative frequencies were compared using the chi-square (?2) test at 5% probability using the InStat statistical package. As a result, it was observed that there is a similarity in various aspects in the production and trade, whereas in the health aspects are asymmetry in certain respects. It was concluded that at the complex agribusiness horse there are several activities that resemble and other distinguished. Based on this study, regional policies could be implemented in order to develop best practices observed by optimizing the horse production in both countries. / Os neg?cios que envolvem a cria??o e utiliza??o do cavalo ocupam uma posi??o de destaque nos pa?ses desenvolvidos e em muitos daqueles em desenvolvimento, como o Brasil e a Argentina. No entanto, pouco se conhece sobre a configura??o do Agroneg?cio do Cavalo, particularmente, a sua contribui??o na gera??o de renda e de postos de trabalho. Destacandose a necessidade de estudos que visem o desenvolvimento desta atividade e dos segmentos econ?micos relacionados, visto que o plantel de equino brasileiro ? de, aproximadamente, 5,8 milh?es de cabe?as e 2,5 milh?es na Argentina. H? um crescente interesse em pesquisas cient?ficas no complexo de cavalos. A atividade agropecu?ria no Brasil e na Argentina, especificamente, a produ??o de equinos e seus derivados, possuem grande relev?ncia para economia de ambos os pa?ses. Dentro desse contexto, existe a hip?tese de que o conhecimento dessa cadeia ? o principal fator na eleva??o da produ??o e gera??o de emprego e renda. Sendo assim, esse trabalho tem por objetivo verificar as assimetrias e semelhan?as na cria??o de equinos no sul do Brasil (RS) e na Argentina, analisando os aspectos produtivos, sanit?rios e comerciais. Trata-se de um estudo descritivo, do tipo estudo de caso m?ltiplo, que utiliza uma investiga??o emp?rica para averiguar um fen?meno contempor?neo. A metodologia utilizada no decorrer desse estudo descritivo compreendeu coleta, tabula??o e an?lise de dados prim?rios e secund?rios, atrav?s de trabalhos de campo e pesquisas bibliogr?ficas. A amostra foi constitu?da por produtores de equinos do Rio Grande do Sul, Brasil e da Argentina, do tipo intencional n?o probabil?stica. Os dados coletados foram tabulados em planilha eletr?nica Excell Vers?o 2010 e para as an?lises descritivas utilizou-se o Statistical Package for Social Science (SPSS Inc. Chicago, Illinois, EUA), vers?o 15.0. A fim de complementar as an?lises estat?sticas, foram efetuadas as an?lises n?o param?tricas sobre as frequ?ncias observadas. As frequ?ncias observadas foram avaliadas em tabelas de conting?ncias 2x2. As frequ?ncias relativas foram comparadas por meio do teste de Qui-quadrado (?2) a 5% de probabilidade, utilizando-se o pacote estat?stico InStat. Como resultado, observou-se que existe uma semelhan?a em v?rios aspectos na produ??o e no comercial, enquanto que no sanit?rio h? uma assimetria em alguns aspectos. Concluiu-se que no complexo do agroneg?cio equino existem diversas atividades que se assemelham e outras que se distinguem. Com base neste estudo, pol?ticas regionais poderiam ser implantadas a fim de se desenvolver as melhores pr?ticas observadas, otimizando a cria??o de equinos em ambas as localidades

Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2018-09-12T16:46:41Z No. of bitstreams: 1 2009 - Liziana Maria Rodrigues.pdf: 560442 bytes, checksum: 3ed65532525d106ac2a5c430b0f2059b (MD5) / Made available in DSpace on 2018-09-12T16:46:41Z (GMT). No. of bitstreams: 1 2009 - Liziana Maria Rodrigues.pdf: 560442 bytes, checksum: 3ed65532525d106ac2a5c430b0f2059b (MD5) Previous issue date: 2009-10-29 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico - CNPq / This study was carried out to estimate the prececal and total nutrient?s digestibility of forages by total feces collection and mobile bag techniques and evaluate the passage kinetics in the digestive tract of horses using mobile bags. This work was conducted with three assays. The first was carried out to estimate nutrient?s digestibility of coast cross hay (Cynodon dactylon cv. coastcross) with the total feces collection technique. The second assay was carried out to estimate nutrient?s digestibility of lucerne hay (Medicago sativa), coast cross hay, and peanut forage (Arachis pintoi) with the mobile bag technique. The last one was carried out to evaluate the prececal nutrient?s digestibility of the same forages used at second assay with the mobile bag technique in a horse cannulated at cecum. The two first assays were simultaneously, with four horses with average weight of 300kg fed coast cross hay only. Water and mineral salt was offered ad libitum. The nylon bags has 45? of porosity and 6.5x 3.0cm of internal dimension and were fill with 663 mg of forage samples ground at 1mm. These assays had duration of 19 days, 10 days for adaptation and regulation of intake, and the last five days to introduce the bags in the stomach and, bags collections in the feces. Two insertions of bags were made at day with 25 bags, eight bags per forage and one empty bag. The feces and the bags were kept on the floor quickly after the horses crap, the bags were separate and the time noted. The assay of prececal digestibility had duration of 20 days which the first 5 days were to horse adaptation and the last 15 days were to insert and recovery the bags in the cecum. In this assay the bags were similar of those used in the first assay, but with a little washer in the border of the bags to possibility the recovery them in the cecum with a magnet. The magnet was place into the cannula near the ileocaecal junction, and at every 30 minutes beginning one hour after bag?s insertion in the stomach, the magnet was withdraw and the bags was removed until 7 hours later. Values of total digestibility with feces collection and mobile bags were similar with the possibility to use the mobile bag technique as alternative to feces collection. There wasn?t differences between digestibility of nutrients of lucerne and peanut forage with mobile bags technique (P<0.05), nevertheless those were higher than the coast cross hay. The use of mobile bag in cannulated horses allow to estimate the digestibility from different segments of the intestine, show to be a good alternative to study the digestion in horses / Este trabalho teve como objetivo estimar a digestibilidade parcial e total dos nutrientes de forrageiras atrav?s das t?cnicas de coleta total de fezes e sacos de n?ilon m?veis e avaliar a cin?tica de passagem de sacos de n?ilon m?veis no trato digest?rio de equinos. O experimento foi dividido em tr?s ensaios. O primeiro ensaio estimou a digestibilidade dos nutrientes do feno de coastcross (Cynodon dactylon cv. coastcross) atrav?s da coleta total de fezes. O segundo ensaio estimou a digestibilidade dos nutrientes do feno de alfafa (Medicago sativa), do feno de coastcross e do amendoim forrageiro (Arachis pintoi) com a t?cnica de sacos de n?ilon m?veis. O terceiro ensaio foi realizado utilizando as mesmas forrageiras do segundo ensaio, avaliando a digestibilidade pr?-cecal com a t?cnica dos sacos de n?ilon m?veis em equino fistulado no ceco. Os dois ensaios de digest?o iniciais foram realizados simultaneamente, com quatro equinos adultos com peso m?dio de 300kg alimentados com dieta exclusiva de feno de coastcross. A ?gua e o sal mineral foram fornecidos ad libitum. Foram utilizados sacos de n?ilon com porosidade de 45? com dimens?es internas de 6,5x 3cm, e preenchidos com 663mg de amostra das forrageiras mo?das a 1mm. Os dois ensaios iniciais tiveram dura??o de 19 dias, sendo 10 dias de adapta??o e regula??o do consumo da dieta, cinco dias para inser??o g?strica dos sacos, coleta total de fezes e dos sacos de n?ilon nas fezes. Para inser??o g?strica dos sacos de n?ilon, foram feitas duas sondagens ao dia, com 25 sacos, oito com amostras de cada alimento e um em branco. As fezes e os sacos foram coletados do piso das baias imediatamente ap?s a excre??o, os sacos foram separados manualmente e anotado o tempo de tr?nsito. O ensaio de digest?o pr?-cecal teve dura??o de 20 dias sendo os cinco primeiros para adapta??o do animal ao manejo e 15 dias de sondagens e recupera??o dos sacos. Neste ensaio foram utilizados sacos semelhantes ao ensaio anterior, por?m em uma das extremidades dos sacos foi afixada uma arruela met?lica para permitir que o saco fosse recuperado no ceco com aux?lio de um im?. Este im? foi posicionado pr?ximo a jun??o ?leo-cecal e, a intervalos de 30 minutos, iniciando uma hora ap?s a inser??o dos sacos no estomago e, o im? foi retirado da c?nula e os sacos aderidos foram coletados at? 7 horas ap?s a inser??o g?strica. Os valores de digestibilidade total atrav?s da coleta de fezes e dos sacos m?veis foram semelhantes confirmando a possibilidade de utiliza??o dos sacos m?veis como alternativa a coleta de fezes. N?o houve diferen?a entre os coeficientes de digestibilidade do feno de alfafa e do amendoim forrageiro com os de sacos de n?ilon m?veis (P<0,05), no entanto estes foram maiores que o do feno de coastcross. O uso da t?cnica de sacos de n?ilon m?veis em animais fistulados permitiu estimar a digestibilidade pr?-cecal e p?s-ileal em equinos, mostrando ser uma alternativa vi?vel no estudo dos processos digestivos desta esp?cie.