Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-11-18T18:04:13Z No. of bitstreams: 2 janaina_lima_silva.pdf: 2943351 bytes, checksum: eedd3d2b236bb813951c76f45384d9d9 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-11-18T18:04:38Z (GMT) No. of bitstreams: 2 janaina_lima_silva.pdf: 2943351 bytes, checksum: eedd3d2b236bb813951c76f45384d9d9 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Made available in DSpace on 2015-11-18T18:04:38Z (GMT). No. of bitstreams: 2 janaina_lima_silva.pdf: 2943351 bytes, checksum: eedd3d2b236bb813951c76f45384d9d9 (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2010 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Funda??o de Amparo ? Pesquisa do Estado de Minas Gerais (FAPEMIG) / Foram conduzidos dois experimentos para avaliar o efeito de dietas com diferentes n?veis de prote?na degrad?vel no r?men (PDR) sobre o consumo, a digestibilidade aparente total dos nutrientes, o balan?o de nitrog?nio e o desempenho em cordeiros. As dietas consistiram de quatro n?veis de PDR (9,15; 9,97; 10,79 e 11,61% na MS), correspondentes a 14,25; 15,50; 16,75 e 18,00% de PB, com 40% de silagem de milho e 60% de concentrado, na base da mat?ria seca. No ensaio de digestibilidade e balan?o de nitrog?nio foram utilizados oito cordeiros machos inteiros da ra?a Santa In?s, com peso vivo m?dio de 26,9 e 24,7 kg, distribu?dos em dois quadrados latinos 4 x 4. Cada per?odo experimental teve a dura??o de 15 dias, sendo 10 para adapta??o e cinco para coletas. Os animais foram mantidos em gaiolas metab?licas individuais, usando-se sacolas para coleta total de fezes, para fins de c?lculos dos coeficientes de digestibilidade in vivo. A coleta de urina foi realizada durante 24 horas, utilizando-se baldes pl?sticos cobertos com telas, quando mediu-se o volume da quantidade excretada nesse per?odo. N?o houve efeito de n?veis crescentes de PDR sobre os consumos de nutrientes, exceto de PDR. As digestibilidades aparentes totais dos nutrientes, bem como o balan?o de nitrog?nio, tamb?m n?o foram influenciadas pelos n?veis de PDR. No ensaio de desempenho foram utilizados 31 cordeiros machos inteiros da ra?a Santa In?s, com peso vivo m?dio de 22,0 kg, distribu?dos no delineamento inteiramente casualizado, com quatro tratamentos (9,15 a 11,61% de PDR na MS), tr?s com oito repeti??es e um com sete repeti??es. Al?m desses animais, mais quatro foram abatidos no in?cio da fase experimental, representando os animais-refer?ncia na metodologia do abate comparativo. N?o houve efeito de n?veis crescentes de PDR sobre os consumos de nutrientes, exceto de PB, PDR e PNDR, bem como para o peso vivo ao abate, ganho de peso total, ganho m?dio di?rio, convers?o alimentar e caracter?sticas de carca?a (peso, ganho e rendimento). Conclui-se que os n?veis de PDR, de 9,15 a 11,61% na MS das dietas, n?o alteram o consumo de nutrientes, exceto de PB, PDR e PNDR, nem a digestibilidade aparente total dos nutrientes, o balan?o de nitrog?nio e o desempenho de cordeiros. Assim, pode-se recomendar a utiliza??o do n?vel mais baixo de PDR (9,15% na MS, com 14,25% de PB), contribuindo para a redu??o da excre??o de nitrog?nio no ambiente e de custos no sistema de produ??o. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2010. / ABSTRACT Two experiments were conducted to evaluate the effect of diets with different levels of rumen degradable protein (RDP) on the intake, total apparent digestibility of nutrients, nitrogen balance and performance in lambs. Diets consisted of four levels of RDP (9.15, 9.97, 10.79 and 11.61% in DM), corresponding to 14.25, 15.50, 16.75 and 18.00% CP, with 40% corn silage and 60% concentrated on dry matter basis. In the digestibility trial and nitrogen balance were used eight Santa In?s lambs, with average weight of 26.9 and 24.7 kg divided into two 4 x 4 latin squares. Each experimental period lasted 15 days, considering 10 for adaptation and five for collections. The animals were kept in individual metabolic cages, using bags for total fecal collection for purposes of calculating the digestibility in vivo. The urine collection was performed during 24 hours, using plastic buckets covered with canvas, when the volume of the amount excreted in this period was measured. There was no effect of increasing levels of RDP on the nutrients intake, except for RDP. The apparent digestibilities of nutrients and nitrogen balance were also not influenced by levels of RDP. In the performance test were used 31 male Santa In?s lambs, with average weight of 22.0 kg, allotted in a completely randomized design with four treatments (9.15 to 11.61% RDP in DM), three with eight and one with seven replicates. Besides these animals, four were slaughtered in the early experimental stage, representing the reference animals in the methodology of comparative slaughter. There was no effect of increasing levels of RDP on intake of nutrients, except for CP, RDP and RUP as well as the slaughter live weight, total weight gain, average daily gain, feed conversion and carcass traits (weight, gain and yield). We conclude that levels of RDP, from 9.15 to 11.61% in DM of diets, do not alter nutrient intake, except for CP, RDP and RUP nor the total apparent digestibility of nutrients, nitrogen balance and lambs performance. Thus, we can recommend the use of the lower level of RDP (9.15% DM, with 14.25% CP), contributing to the reduction of nitrogen excretion in the environment and of costs in the production system.

Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2017-03-06T18:07:19Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) keila_abadia_barbosa.pdf: 569445 bytes, checksum: 96bda3ea764c4ae7e6e76c0c9ed5b9cf (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2017-03-30T14:54:59Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) keila_abadia_barbosa.pdf: 569445 bytes, checksum: 96bda3ea764c4ae7e6e76c0c9ed5b9cf (MD5) / Made available in DSpace on 2017-03-30T14:54:59Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) keila_abadia_barbosa.pdf: 569445 bytes, checksum: 96bda3ea764c4ae7e6e76c0c9ed5b9cf (MD5) Previous issue date: 2016 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) / Objetivou-se avaliar a energia metaboliz?vel aparente (EMA), a energia metaboliz?vel aparente corrigida (EMAn) e o coeficiente de metaboliza??o aparente da energia bruta (CMAEB) do farelo de crambe e sua inclus?o em ra??es para codornas de corte sobre o desempenho, caracter?sticas de carca?a e an?lise de rentabilidade econ?mica. O primeiro experimento foi realizado para a determina??o da EMA, da EMAn e o CMAEB pelo m?todo de coleta total de excretas. Para isso utilizou-se 315 codornas de corte machos, com 42 dias de idade, durante 10 dias, distribu?das em tr?s tratamentos, sendo T1: ra??o refer?ncia (RR); T2: 80% RR + 20% de farelo de crambe e T3: 70% RR + 30% de farelo de crambe, com sete repeti??es de 15 aves por unidade experimental. Para o segundo experimento foram utilizadas 390 codornas, Coturnix coturnix, da linhagem LF1, machos e f?meas, distribu?das em delineamento inteiramente casualizado, com cinco tratamentos e seis repeti??es de 13 aves por unidade experimental. As fases experimentais foram divididas em inicial (8 a 21 dias) e de crescimento (22 a 35 dias de idade). Os n?veis de substitui??o de parte da prote?na da ra??o pela prote?na do farelo de crambe foram: 0, 3, 6, 9 e 12%. Para o primeiro experimento os valores obtidos de EMA, EMAn e CMAEB foram de 2445,58 kcal; 2197,29 kcal e 51,97%, respectivamente, para a ra??o teste T2. Para ra??o teste T3, obteve-se para EMA, EMAn e CMAEB os valores de 1772,18 kcal; 1592,25 kcal e 37,66%, respectivamente. Para o segundo experimento observou-se que n?o houve diferen?as significativas pela substitui??o de parte da prote?na bruta da ra??o pela prote?na do farelo de crambe sobre o desempenho das codornas nas fases inicial e de crescimento. Recomenda-se a substitui??o de parte da prote?na da ra??o pela prote?na do farelo de crambe at? o n?vel de 12%, por n?o influenciar negativamente no desempenho das codornas de corte. Pela an?lise de rentabilidade o n?vel de 6% de substitui??o de parte da prote?na da ra??o pela prote?na do farelo de crambe apresentou o melhor resultado. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2016. / This study aimed to evaluate the apparent metabolizable energy (AME), the corrected apparent metabolizable energy (AMEn) and apparent metabolization coefficient of gross energy (AMCGE) of crambe meal and their inclusion in diets for meat quails on performance, carcass features, and economic profitability analysis. The first experiment was conducted to determine the AME, the AMEn and AMCGE by the total excreta collection method. Three hundred and fifteen male meat quails with 42 age days, during 10 days, distributed in three treatments, T1: basal diet (BD); T2: 80% BD + 20% crambe meal and T3: 70% BD + 30% crambe meal, with seven replicates and fifteen birds each. For the second experiment, three hundred and ninety quails, Coturnix coturnix, the LF1 strain, male and female, were distributed in a completely randomized design, with five treatments and six repetitions with thirteen birds each. Experimental phases were divided into initial phase (8 to 21 days) and growing phase (22 to 35 days of age). The replacement levels of feed protein by crambe meal protein were 0, 3, 6, 9 and 12%. For the first experiment AME, AMEn and AMCGE values were 2445.58 kcal, 2197.29 kcal and 51.97%, respectively, to feed test T2. To feed test T3, was obtained for AME, AMEn and AMCGE values of 1772.18 kcal, 1592.25 kcal and 37.66%, respectively. For the second experiment there were no significant differences by dietary crude protein replacing part by crambe meal protein on the quails performance in the initial and growing phases. It is recommended to replace part of the feed protein at level 12% of crambe meal, not influencing negatively the meat quails performance. For the profitability analysis the replacement level of 6% crambe meal have better results.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T13:30:33Z No. of bitstreams: 5 30.pdf: 544436 bytes, checksum: 4dca3d1781581491c5f88c4947e642ce (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T18:23:54Z (GMT) No. of bitstreams: 5 30.pdf: 544436 bytes, checksum: 4dca3d1781581491c5f88c4947e642ce (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-27T18:23:54Z (GMT). No. of bitstreams: 5 30.pdf: 544436 bytes, checksum: 4dca3d1781581491c5f88c4947e642ce (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2011 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes) / Empresa de Pesquisa Agropecu?ria de Minas Gerais (EPAMIG) / Objetivou-se com o presente trabalho avaliar a produtividade de massa seca, a composi??o qu?mico-bromatol?gica e a extra??o de minerais do capim-braqui?ria em diferentes idades de rebrota??o ap?s a colheita do milho, arranjos, clones de eucalipto e locais de amostragem, na integra??o lavoura-pecu?ria-floresta. O experimento foi conduzido na Fazenda Experimental de Santa Rita/EPAMIG, Prudente de Morais, MG, em esquema de parcelas subsubdivididas, no delineamento em blocos casualizados, com tr?s repeti??es. Nas parcelas distribu?ram-se as idades de rebrota??o da forrageira (10, 17, 24, 31, 38, 45 e 52 dias ap?s a colheita do milho para silagem). As subparcelas corresponderam aos arranjos de eucalipto, em linhas duplas: (3x2) + 20 m e (2x2) + 9 m, e em linha simples: 9 x 2 m (experimento 1); e clones de eucalipto, GG 100, I 144 e VM 58 (experimento 2). As subsubparcelas consistiram nos locais de amostragem, no centro da entrelinha e sob a copa de eucalipto. No experimento 1 o arranjo (3x2) + 20 m proporciona maior produtividade de massa seca do capim-braqu?ria, no centro da entrelinha. Entretanto, as produtividades de massa seca s?o baixas, mesmo com elevadas altura de plantas. Os arranjos (2x2) + 9 m e 9 x 2 m proporcionam melhor composi??o bromatol?gica, no centro da entrelinha, com maior teor de PB e menor teor de FDN. Os teores de prote?na bruta s?o mais altos sob a copa de eucalipto, relativamente ao centro da entrelinha. O arranjo (3x2) + 20 m proporciona maior extra??o de N, K, Ca e Mg no centro da entrelinha do que sob a copa de eucalipto. Maior extra??o de P ocorreu no arranjo de (3x2) + 20 m, no centro da entrelinha. As extra??es de N, K, Ca, Mg e S aumentam com o avan?o da idade de rebrota??o. No experimento 2, Os clones de eucalipto n?o afetam a produtividade de massa seca do capim-braqui?ria que apresenta maior disponibilidade no centro da entrelinha do que sob a copa de eucalipto. O capim-braqui?ria cultivado junto com o clone I 144 apresenta melhor composi??o bromatol?gica, com mais elevados teores de PB, N, P, Ca, Mg e S e mais baixo teor de FDN. As extra??es de N, P, Ca, Mg e S aumentam com o avan?o da idade de rebrota??o do capim-braqui?ria, sendo menores sob a copa de eucalipto para P e Mg. O clone VM 58 proporciona maior extra??o de K pelo capim-braqui?ria e com mais alta efici?ncia de resposta, no centro da entrelinha de eucalipto. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2011. / ABSTRACT This study aimed to evaluate the productivity of dry mass, chemical bromatological composition and mineral extraction of signal grass at different sprout ages after maize harvest, eucalyptus arrangements, clones, and sampling sites, cultivated in crop-livestock-forest. A trial was carried out at Santa Rita Experimental Farm/EPAMIG, Prudente de Morais, MG, the experimental design was a randomized complete block (RBD) in a split split plot, with three replications. The ages of forage sprouts (10, 17, 24, 31, 38, 45 and 52 days after silage maize harvest) were distributed in the main plots. The eucalyptus arrangements, in double rows: (3 x 2) + 20 m and (2x2) + 9 m, and simple row: 9 x 2 m (experiment 1), and eucalyptus clones, GG 100, I 144 and VM 58 (experiment 2) in the subplots. The sub sub plots consisted of forage sampling sites, in the inter-row (center) and under the canopy of eucalyptus. In the experiment 1, the arrangement (3x2) + 20 m produced higher dry mass of signal grass, in the inter-row (center). However, yields of dry mass are low, even with high plant height. Arrangements (2x2) + 9m and 9 x 2 m provided better chemical composition, in the inter-row (center), with higher CP and lower NDF content. The crude protein levels are higher under the canopy of eucalyptus, for the inter-row (center). The arrangement (3x2) + 20 m provides better extraction of N, K, Ca and Mg in the inter-row (center) than under the canopy of eucalyptus. Greater extraction of P occurred in the arrangement (3x2) + 20 m in the inter-row (center). The extraction of N, K, Ca, Mg and S increase with advancing age sprouts. In the experiment 2, the eucalyptus clones do not affect the productivity of dry mass of signal grass and has greater availability in the inter-row (center) than under the canopy of eucalyptus. The signal grass grown with the clone I 144 has better chemical composition, with higher concentrations of CP, N, P, Ca, Mg e S and lower NDF content. The extractions of N, P, Ca, Mg and S increase with advancing maturity of signal grass, and it is smaller under the canopy of eucalyptus for P and Mg. The signal grass cultived with the VM 58 clone present higher extraction of K and highest efficiency of response, in the inter-row.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T13:30:33Z No. of bitstreams: 5 31.pdf: 1157131 bytes, checksum: f9cc75761ea50188e5de5aa60ce65479 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20904 bytes, checksum: e09bf99e64678e4285abf3ef3e05412d (MD5) license_rdf: 23422 bytes, checksum: b145eda3d84bdc4f56b389c0ab98d368 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T18:26:08Z (GMT) No. of bitstreams: 5 31.pdf: 1157131 bytes, checksum: f9cc75761ea50188e5de5aa60ce65479 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20904 bytes, checksum: e09bf99e64678e4285abf3ef3e05412d (MD5) license_rdf: 23422 bytes, checksum: b145eda3d84bdc4f56b389c0ab98d368 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-27T18:26:08Z (GMT). No. of bitstreams: 5 31.pdf: 1157131 bytes, checksum: f9cc75761ea50188e5de5aa60ce65479 (MD5) license_url: 49 bytes, checksum: fd26723f8d7edacdb29e3f03465c3b03 (MD5) license_text: 20904 bytes, checksum: e09bf99e64678e4285abf3ef3e05412d (MD5) license_rdf: 23422 bytes, checksum: b145eda3d84bdc4f56b389c0ab98d368 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2010 / Funda??o de Amparo ? Pesquisa do estado de Minas Gerais (FAPEMIG) / Avaliaram-se a produtividade de mat?ria seca e a composi??o bromatol?gica de gram?neas forrageiras colhidas em ?rea degradada pela deposi??o de res?duos s?lidos urbanos, num experimento em esquema de parcelas subdivididas, com delineamento em blocos casualizados, com cinco gram?neas nas parcelas e tr?s cortes nas subparcelas no tempo, com quatro repeti??es. O teor e a absor??o de minerais e a concentra??o de metais pesados foram avaliados no 2? corte, no delineamento em blocos casualizados, com cinco gram?neas e quatro repeti??es. As gram?neas utilizadas foram Brachiaria decumbens cv. Basilisk, Brachiaria ruziziensis, Brachiaria brizantha cv. Marandu e cv. Xara?s e Panicum maximum cv. Tanz?nia, colhidas com 42 dias de rebrota??o. A produtividade de mat?ria seca por corte foi de at? 1.480 kg/ha, o teor m?nimo de prote?na bruta (PB) foi 9,5% e o teor m?dio de fibra detergente neutro (FDN) foi 62,3%. As gram?neas forrageiras apresentam resultados satisfat?rios em produtividade de mat?ria seca e composi??o bromatol?gica, constituindo em alternativa para a reabilita??o de ?rea degradada por res?duos s?lidos urbanos, assim como adequada composi??o mineral, ? exce??o de f?sforo, cujo teor foi muito baixo. As concentra??es de todos os metais pesados encontram-se abaixo do n?vel de toxicidade para as plantas. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2010. / ABSTRACT We evaluated the dry matter yield and chemical composition of grasses harvested in an area degraded by deposition of solid waste. The experiment was conducted in a split plot randomized block design with five grass plots and subplots in the three cuts time, with four replications. The content and the absorption of minerals and heavy metals were evaluated in the second cut, in a randomized block design with four replications and five grasses. The grasses used were Brachiaria decumbens cv. Basilisk, Brachiaria ruziziensis, Brachiaria brizantha cv. Marandu and cv. Xara?s, and Panicum maximum cv. Tanz?nia, taken at 42 days regrowth. The yield of dry matter per cutting reached up to 1480 kg / ha, the minimum content of crude protein (CP) was 9.5% and the average content of neutral detergent fiber (NDF) was 62.3%. The grasses have good results in dry matter yield and chemical composition, providing an alternative for the rehabilitation of degraded area by municipal solid waste, and adequate mineral composition, except for phosphorus content was very low. The concentrations of all heavy metals are below the level of toxicity to plants.

Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-10-25T16:19:22Z No. of bitstreams: 1 2012 - Danilo Antonio Morenz.pdf: 638093 bytes, checksum: 3b4f1d143b088953006c8246815bb7b1 (MD5) / Made available in DSpace on 2017-10-25T16:19:25Z (GMT). No. of bitstreams: 1 2012 - Danilo Antonio Morenz.pdf: 638093 bytes, checksum: 3b4f1d143b088953006c8246815bb7b1 (MD5) Previous issue date: 2011-11-20 / CNPq / The objective of this study was to evaluate the variables related to the heights in the pre and post grazing sward, the production of dry biomass of green forage, morphological composition, leaf:stem ratio and nutritive value of two clones of elephant grass managed under rotational stocking. Was adopted a completely randomized design with repeated measures in time (grazing cycles) and three replications (paddocks). The sward heights, in pre and post grazing were influenced by the clones and grazing cycles, being the highest values observed for clone CNPGL 03-01-00. The production of dry mass of green forage was influenced by clone and grazing cycle, with higher mean value observed for CNPGL 03-01- 00, which was 17% higher than that observed for CNPGL 92-198-7, and there was decreased of dry mass of green forage with the advance of grazing cycles. The production of dry matter of leaves was influenced only by grazing cycle, with gradual reduction from the first to the third cycle. However, in fourth cycle was increase in biomass of leaves, which did not differ from that observed in the second cycle. There was interaction clone x cycle for the production of dry matter of stem, being observed differences in the first and third cycles for the clones. There was no effect of the factors studied for the production of senescent material. The leaf: stem ratio was influenced by grazing cycles, with interaction of the factors. The clone CNPGL 91-198-7 kept the leaf:stem ratio stable over the cycles, while clone CNPGL 1-3-00 presented a decrease in leaf:stem ratio from first until to third cycle. The number of aerial tillers was influenced by grazing cycles, increasing from the first until to third cycle, while the fourth cycle was observed decreased in the number of these tillers. The basal tillers were only effect of clones, where CNPGL 91-198-7 showed a higher number of these tillers. Crude protein (CP) and lignin (LIG) content were not affected by clones or by grazing cycles. Neutral detergent fiber (NDF) and the in vitro dry matter digestibility (IVDMD) were affected only by grazing cycles. The highest values of NDF were observed at the firsts three grazing cycles and, in the fourth grazing cycle the NDF was reduced. The IVDMD decreased until the third cycle; however, in the fourth cycle the values obtained were similar to those of the first cycle. According to results obtained the clone CNPGL 92-198-7 showed higher production of dry matter of the leaves, lower production of dry matter of stem and higher density of basal tillers, which may indicate its greatest potential for use under grazing, when compared to CNPGL 01-03-00. / Objetivou-se estudar as alturas no pr? e p?s-pastejo do dossel forrageiro, a produ??o de biomassa seca de forragem verde, a composi??o morfol?gica, a rela??o folha:colmo, a densidade de perfilhos e o valor nutritivo de dois clones de capim-elefante manejados sob lota??o rotacionada. Foi utilizado delineamento inteiramente casualizado com medidas repetidas no tempo (quatro ciclos de pastejo) e tr?s repeti??es (piquetes). As alturas do dossel pr? e p?s pastejo foram influenciadas pelos clones e pelos ciclos de pastejo. Os valores mais elevados foram observados para o clone CNPGL 00-1-3. Para massa seca de forragem verde houve apenas efeito do clone e do ciclo de pastejo. O valor m?dio da massa seca de forragem verde do CNPGL 00-1-3 foi 17% maior do que a do CNPGL 92-198-7. Com o avan?ar dos ciclos de pastejo houve redu??o da massa seca de forragem verde. A produ??o de biomassa seca de folha foi influenciada apenas pelo ciclo de pastejo, com redu??o gradual do primeiro at? o terceiro ciclo. No quarto ciclo houve aumento na massa seca de folha, que n?o diferenciou daquela obtida no segundo ciclo. Houve intera??o clone x ciclo para a massa de colmo, sendo observadas diferen?as entre clones apenas no primeiro e terceiro ciclos. N?o foi observado efeito dos fatores estudados ou intera??o para a massa seca de material morto. A rela??o folha:colmo foi influenciada pelos ciclos de pastejo, havendo intera??o dos fatores estudados. O CNPGL 92-198-7 manteve a rela??o folha:colmo est?vel ao longo dos ciclos, enquanto que o CNPGL 00-1-3 apresentou decr?scimo na rela??o folha:colmo do primeiro at? o terceiro ciclo, com maior valor obtido no quarto ciclo. Quanto ao n?mero de perfilhos a?reos foi observado efeito dos ciclos de pastejo, com aumento do primeiro ao terceiro ciclo, enquanto que no quarto ciclo houve redu??o do n?mero desses perfilhos. Para os perfilhos basais houve efeito dos clones, onde o CNPGL 92-198-7 apresentou maior n?mero de perfilhos que o CNPGL 00-1-3. Os teores de prote?na bruta (PB) n?o foram influenciados pelos clones ou pelos ciclos de pastejo. Os teores de fibra em detergente neutro (FDN) e o coeficiente da digestibilidade in vitro da mat?ria seca (DIVMS) foram influenciados apenas pelos ciclos de pastejo. Os maiores valores de FDN foram observados nos tr?s primeiros ciclos de pastejo, j? no quarto ciclo de pastejo o teor de FDN reduziu. Quanto ? DIVMS houve queda at? o terceiro ciclo, enquanto que no quarto ciclo os valores obtidos foram semelhantes aos do primeiro ciclo. Para lignina n?o foi observada diferen?a dos fatores estudados. De acordo com os resultados obtidos, o clone CNPGL 92-198-7 apresentou maior produ??o de biomassa seca de folhas, menor produ??o de biomassa seca de colmo e maior densidade populacional de perfilhos basais, o que pode indicar seu maior potencial para uso sob pastejo, quando comparado ao CNPGL 00-1-3.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T13:30:36Z No. of bitstreams: 5 50.pdf: 601131 bytes, checksum: 40ec6f06ce6ce603d177d20c34d83fbd (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-27T19:17:39Z (GMT) No. of bitstreams: 5 50.pdf: 601131 bytes, checksum: 40ec6f06ce6ce603d177d20c34d83fbd (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-27T19:17:39Z (GMT). No. of bitstreams: 5 50.pdf: 601131 bytes, checksum: 40ec6f06ce6ce603d177d20c34d83fbd (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2012 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes) / Objetivou-se selecionar gen?tipos de batata-doce mais produtivos e de melhor qualidade nutricional e avaliar a qualidade da silagem de ramas e de ra?zes de batata-doce. Foram realizados dois ensaios. Com o primeiro ensaio objetivou-se selecionar gen?tipos de batata-doce de melhores caracter?sticas de produ??o de ramas e avaliar a composi??o bromatol?gica das ramas emurchecidas de batata-doce e de suas silagens. O experimento foi conduzido na Fazenda Rio Manso, da UFVJM, em Couto Magalh?es de Minas - MG. Foi utilizado o delineamento em blocos ao acaso, com quinze gen?tipos de batata-doce: BD-31TO, BD-26, BD-13, BD-17, BD-22, BD-24, BD-54, BD-56, BD-69, BD-43, BD-44, BD-46, BD-52, BD-35 e a cultivar comercial Brazl?ndia Rosada, com tr?s repeti??es. Apenas para o n?mero de folhas por metro linear n?o foram observadas diferen?as significativas entre os gen?tipos. A maioria dos gen?tipos estudados apresenta m?dia a alta produtividade de massa verde (PMV) e de massa seca das ramas (PMS). Devido ? exist?ncia de correla??o entre o comprimento da haste principal (CH) e a PMS, pode-se em futuros trabalhos mensurar o comprimento da haste visando maiores PMS. N?o foram observadas diferen?as significativas entre os gen?tipos para os teores de carboidratos sol?veis das ramas emurchecidas e silagens das ramas. Foram encontradas diferen?as significativas para os teores de mat?ria seca (MS), cinzas, prote?na bruta (PB), fibra em detergente neutro (FDN), fibra em detergente ?cido (FDA) e lignina. Para as ramas emurchecidas, os gen?tipos BD-26, BD-13, BD-56, BD-46, BD-35 e Brazl?ndia Rosada apresentaram as composi??es bromatol?gicas mais adequadas. O n?mero de folhas na cultura da batata-doce n?o possui rela??o com a qualidade bromatol?gica de suas ramas. Para as silagens das ramas, o gen?tipo BD-56 proporcionou as melhores caracter?sticas bromatol?gicas. Com o segundo ensaio objetivou-se avaliar caracter?sticas de produtividade de ra?zes, a composi??o bromatol?gica das silagens de ra?zes e o potencial de produ??o de prote?na bruta de diferentes gen?tipos batata-doce. Foi utilizado o delineamento em blocos ao acaso, com dez tratamentos e duas repeti??es, sendo os gen?tipos de batata-doce oriundos do banco de germoplasma da UFVJM (BD-31TO, BD-17, BD-22, BD-24, BD-54, BD-69, BD-43, BD-46, BD-52 e BD-35). As parcelas foram compostas por duas leiras de 3,0 m, com 0,90 m entre leiras e 0,30 m entre plantas. Na colheita foram avaliadas as caracter?sticas de produtividade total de ra?zes (PTR) e produtividade comercial de ra?zes (PCR), n?o sendo observadas diferen?as significativas entre os gen?tipos para essas caracter?sticas. As PTR e PCR foram baixas, abaixo da m?dia nacional. Para os teores m?dios de MS, nitrog?nio amoniacal (%N-NH3 NT-1), FDN e lignina houve diferen?as significativas entre os gen?tipos avaliados. Os gen?tipos BD-17, BD-69 e BD-46 originaram silagens de raiz de melhores composi??es bromatol?gicas. A cultura da batata-doce possui alto potencial de produ??o de PB, com destaque para os gen?tipos BD-17, BD-54, BD-43, BD-46 e BD-52. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT The objective of this study was to select genotypes of sweet potato more productive and better nutritional quality and evaluate the quality of silage branches and roots of sweet potato. Two experiments were conducted. With the first experiment was aimed to select genotypes of sweet potato with best features of production of branches and assess the chemical composition of branches wilted sweet potato and its silages. The experiment was conducted at the Fazenda Rio Manso of the UFVJM in the city of Couto Magalh?es de Minas ? MG - Brazil. We used a randomized block design, with fifteen genotypes of sweet potato: BD-31TO, BD-26, BD-13, BD-17, BD-22, BD-24, BD-54, BD-56, BD-69, BD-43, BD-44, BD-46, BD-52, BD-35 and the commercial cultivar Brazl?ndia Rosada, with three replications. Only the number of leaves per linear meter no significant differences were observed among genotypes. Most genotypes has medium to high productivity of green mass (PGM) and dry mass of branches. Due the correlation between the length of the main branch (CB) and productivity of dry mass of branches (PDM), can in future studies to measure the length of the rod aiming higher PDM. No significant differences were observed among genotypes for soluble carbohydrates from branches and wilted silages of branches. Significant differences were found for dry matter (DM), ash, crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF) and lignin. For the wilted branches, genotypes BD-26, BD-13, BD-56, BD-46, BD-35 and Brazl?ndia Rosada presented better compositions bromatologic. The number of leaves in the culture of sweet potato has no relation with the chemical quality of their branches. For silages of branches, genotype BD-56 have the best qualitative characteristics. The second experiment aimed to evaluate characteristics of root yield, composition of silages of roots and the potential production of crude protein of sweet potato genotypes. We used a randomized block design with ten treatments and two replications, and the sweet potato genotypes from the germplasm bank of UFVJM (BD-31TO, BD-17, BD-22, BD-24, BD-54 , BD-69, BD-43, BD-46, BD-52, BD-35). The plots were composed of two piles of 3.0 m, with 0.90 m between furrows and 0.30 m between plants. At harvest, the characteristics evaluated were total root yields (TRY) and marketable yield of roots (MYR), no differences were observed among genotypes these characteristics. The TRY and MYR were low, below the national average. For the average levels of DM, ammonia nitrogen (% N-NH3.NT-1), NDF and lignin were no significant differences between genotypes. The genotypes BD-17, BD-69 and BD-46 showed the best results of composition of silages roots. The culture of sweet potato has a high potential for production of CP, especially with the genotypes BD-17, BD-54, BD-43, BD-46 and BD-52.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-10-23T17:04:24Z No. of bitstreams: 2 Rodrigo_Duarte_Andrade.pdf: 581982 bytes, checksum: 8809fc50e3b7d9566339c5470ea99fc4 (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-10-23T17:06:28Z (GMT) No. of bitstreams: 2 Rodrigo_Duarte_Andrade.pdf: 581982 bytes, checksum: 8809fc50e3b7d9566339c5470ea99fc4 (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) / Made available in DSpace on 2015-10-23T17:06:28Z (GMT). No. of bitstreams: 2 Rodrigo_Duarte_Andrade.pdf: 581982 bytes, checksum: 8809fc50e3b7d9566339c5470ea99fc4 (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) Previous issue date: 2009 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (Capes) / Objetivou-se avaliar o efeito de diferentes intervalos de aplica??o de N e K2O, ap?s o corte, nas caracter?sticas estruturais e produtivas das cultivares Marandu e Xara?s de Brachiaria brizantha. Foram conduzidos dois experimentos em casa de vegeta??o, em esquema fatorial 4 x 2, no delineamento em blocos casualizados, com quatro repeti??es. No experimento 1, ap?s o desbaste das plantas nos vasos, foram aplicadas doses semanais de 50 mg dm-3 de N e K2O, at? uma semana antes do corte de uniformiza??o, totalizando quatro aplica??es, e, ap?s o corte, foram aplicadas doses de 50 mg dm-3 de N e de K2O nos intervalos 0; 3; 6 e 9 dias, sendo as cultivares avaliadas com 44 dias de rebrota??o. No experimento 2, foi aplicada dose ?nica de 50 mg dm-3 de N de K2O, uma semana antes do corte de uniformiza??o e, ap?s o corte, foram aplicados 100 mg dm-3 de N e de K2O nos intervalos 0; 4; 8 e 12 dias, avaliando-se as cultivares com 39 dias de rebrota??o. No experimento 1, somente a produ??o de mat?ria seca e a rela??o l?mina/colmo foram influenciadas pelo intervalo de aplica??o dos adubos. J? no experimento 2, o n?mero total de folhas, o n?mero de folhas expandidas, o n?mero de folhas mortas e o comprimento laminar acumulado foram influenciados pelo intervalo de forma linear negativa, enquanto a produ??o de mat?ria seca apresentou resposta quadr?tica ao aumento do intervalo de aduba??o. Nas condi??es estudadas, conclui-se que a cv. Marandu apresenta maior n?mero de folhas e de perfilhos que a cv. Xara?s, que, por sua vez, apresenta maior altura, produ??o de mat?ria seca, rela??o l?mina/colmo e produ??o da rebrota??o. A aplica??o dos adubos nitrogenado e pot?ssico imediatamente ap?s o corte apresenta melhores resultados para as caracter?sticas estruturais, exceto para n?mero de folhas mortas. A produ??o de mat?ria seca por vaso e por planta ? maximizada com a aduba??o entre quatro e cinco dias ap?s o corte. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Produ??o Vegetal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2009. / ABSTRACT The objective was to evaluate the effect of differents intervals of N and K2O application after the cut in the structural and productives characteristics of the cultivars Marandu and Xara?s of Brachiaria brizantha. Two experiments mere conducted in a greenhouse, in a 4x2 factorial scheme, in a randomized block design with four repetitions. In experiment one, after the plants thinning in the vases, were applied weekly dosage of 50 mg dm-3 of N and K2O, until one week before the standardized cut, in total of four applications, and after the cut, were applied doses of 50 mg dm-3 of N and of K2O, in the intervals 0; 3; 6 and 9 days, been the cultivars evaluated with 44 days of regrowth. In experiment two, were applied unique dose of 50 mg dm-3 of N and of K2O, one week before the standardized cut and, after the cut were applied 100 mg dm-3 of N and of K2O in the intervals 0; 4; 8 and 12 days, evaluating the cultivars with 39 days of regrowth. In experiment one, only the dry material production and the relation leaf-stem were influenced for the intervals of fertilizer application. Already in the experiment two, total number of leaves, number of expanded leaves, number of dead leaves and accumulated laminar length were influenced for the interval in a negative linear form way, while the dry material production presents a quadratic answer to adubation intervals increase. In studied conditions, the conclusion is that cultivar Marandu presents bigger number of leaves and of tillers than the cultivar Xara?s, that presents bigger height, production of dry material, relation leaf-stem and regrowth production. The nitrogen fertilizer and potassium application immediately after the cut presents better results for the structural characteristics, except for number of dead leaves. The dry material production per vase and per plant is maximized with the adubation between four and five days after the cut.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-10-26T13:54:10Z No. of bitstreams: 2 carla_silva_chaves.pdf: 465218 bytes, checksum: 61fac981c650f80191edf0c6f87da7fc (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-10-26T13:55:12Z (GMT) No. of bitstreams: 2 carla_silva_chaves.pdf: 465218 bytes, checksum: 61fac981c650f80191edf0c6f87da7fc (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) / Made available in DSpace on 2015-10-26T13:55:12Z (GMT). No. of bitstreams: 2 carla_silva_chaves.pdf: 465218 bytes, checksum: 61fac981c650f80191edf0c6f87da7fc (MD5) license_rdf: 22974 bytes, checksum: 99c771d9f0b9c46790009b9874d49253 (MD5) Previous issue date: 2011 / 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) / O estudo foi conduzido no campo experimental da Embrapa Gado de Leite (Coronel Pacheco, MG), com objetivo de avaliar as caracter?sticas nutricionais, estruturais e produtivas de gen?tipos de capim-elefante sob estrat?gias de lota??o intermitente. Utilizou-se o esquema fatorial 2x2x2 (dois gen?tipos, CNPGL 92-198-7 e CNPGL 00-1-3; duas intercepta??es luminosas ao corte, 90 e 95%; duas alturas de res?duo p?s-pastejo, 30 e 50 cm), no delineamento inteiramente casualizado, com tr?s repeti??es. O rebaixamento do dossel foi realizado via pastejo direto por novilhas mesti?as Hol?ndes x Zebu utilizando a t?cnica ?mob grazing?. As caracter?sticas estruturais e produtivas foram avaliadas a partir de coletas realizadas rente ao solo e o valor nutritivo foi determinado no material amostrado. O gen?tipo CNPGL 92-198-7 apresentou menor per?odo de descanso e mais ciclos de pastejo, refletindo em maior produ??o de forragem dentro da esta??o de crescimento. O manejo com res?duo p?s-pastejo com 30 cm resultou em melhor rela??o l?mina/colmo e consequente percentagem de l?mina foliar, com superioridade do gen?tipo CNPGL 92-198-7 sobre o gen?tipo CNPGL 00-1-3. O gen?tipo CNPGL 92-198-7 apresentou superioridade em rela??o ao gen?tipo CNPGL 00-1-3 no que ser refere ? taxa de ac?mulo de forragem e n?mero de perfilhos. O gen?tipo CNPGL 92-198-7 apresentou maior teor de PB e DIVMS e menor teor de FDN sob 90% de intercepta??o luminosa e res?duo p?s-pastejo de 30 cm. O gen?tipo CNPGL 00-1-3 obteve melhor valor nutritivo sob 95% de intercepta??o luminosa. O gen?tipo CNPGL 92-198-7 apresentou maior taxa de degrada??o na IL de 90% e no res?duo p?s-pastejo de 30 cm, j? o gen?tipo CNPGL 00-1-3 obteve maior taxa de degrada??o na IL de 95% sob 30 cm de res?duo p?s-pastejo. Recomenda-se o uso do gen?tipo CNPGL 92-198-7, manejando este sob IL de 95% e res?duo p?s-pastejo de 30 cm que ? a condi??o que esta forrageira atinge sua maior produtividade. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2011. / ABSTRACT The study was conducted at Embrapa Gado de Leite (Minas Gerais, Brazil), to evaluate the nutritional characteristics, structural and production of elephant grass genotypes under intermittent stocking strategies. There had been used a 2x2x2 factorial (two genotypes, CNPGL 92-198-7 and CNPGL 00-1-3; two light interceptions to cut, 90 and 95%, two post-grazing residue heights, 30 and 50 cm) in a completely randomized design with three replications. The lowering of the canopy was accomplished via direct grazing of crossbred Holstein x Zebu heifers using the technique "mob grazing". The structural and productive characteristics were assessed from samples taken at ground level and nutritive value was determined in the sampled material. The genotype CNPGL 92-198-7 presented a shorter rest period and more grazing cycles, resulting in a higher forage production in the growing season. The management with post-grazing residue of 30 cm height resulted in better value for blade/stem and a resulting percentage of leaf blades, with superiority of genotype CNPGL 92-198-7 compared to genotype CNPGL 00-1-3. The genotype CNPGL 92-198-7 has showed to be superior to the genotype CNPGL 00-1-3 in relation to forage accumulation rate and number of tillers. The genotype CNPGL 92-198-7 has a higher content of CP and IVDMD and lower NDF content under 90% light interception and post-grazing residue height of 30 cm. The genotype CNPGL 92-198-7 showed the highest degradation in 90% IL, and height post-grazing of 30 cm, as the genotype CNPGL 00-1-3 had the highest rate of degradation in IL of 95% under 30 cm of height post-grazing. It is recommended the use of genotype CNPGL 92-198-7, handling this under 95% IL and height post-grazing residue of 30 cm which is the condition that the forage is at its highest productivity.