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Search Results: 1 - 10 of 114642 matches for " José Mauro;Silva "
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Parametros ruminais e desaparecimento da FDN da forragem em bovinos suplementados em pastagem na esta??o das águas
Franco, Gumercindo Loriano;Andrade, Pedro de;Bruno Filho, José Roberto;Diogo, José Mauro da Silva;
Revista Brasileira de Zootecnia , 2002, DOI: 10.1590/S1516-35982002000900024
Abstract: the objective this work was to evaluate the effect of protein supplements varying in ruminal degradabilities (high-75%, medium-55% and low-35%) fed at three levels (0.5, 1.0 and 1.5 kg/day) on ruminal ph, n-nh3 and ndf degradability of forage, with steers grazing brachiaria brizantha cv. marandu during rainy season. the experiment design was a randomized complete block with three replications (grazing periods) and the supplemented treatments were arranged in a factorial 3 x 3. ten rumen-fistuled crossbred steers with 463 kg live weight, were used. the nylon bag technique and grazing simulation were used to verify the forage and supplement ruminal degradation. ruminal ph and n-nh3 were determined along two consecutive days. there were no differences between the treatments (supplement source and level) on forage ndf degradability. however, there were differences for the incubation times, with the higher degradability (67.58%) at 96 hours of incubation. no difference for the ruminal ph and time x treatment interaction were observed, but there were differences for the time of sampling. the ph varied ranged from 5.7 to 7.4, with an average of 6.48. the n-nh3 values were higher for the supplements with high protein degradability. the first hours after supplementation showed the highest values of n-nh3, and the peaks of n-nh3 in the morning were higher than the peaks of the afternoon. fiber degradation was not affected by rumen n-nh3 concentrations.
Rendimento forrageiro e composi??o bromatológica de variedades de milheto (Pennisetum glaucum (L.) R. BR.)
Kollet, José Luiz;Diogo, José Mauro da Silva;Leite, Gilberto Gon?alves;
Revista Brasileira de Zootecnia , 2006, DOI: 10.1590/S1516-35982006000500008
Abstract: the objective of this experiment was to evaluate the productivity, tillering, leaf blade/stem ratio and chemical composition (cp, ndf and adf) of three pearl millet (pennisetum glaucum (l.) r. br.) varieties (african, american and bn-2) submitted to three different cutting ages (35, 42 and 49 days). during the first growth period, a split-plot arrangement in a complete randomized block design was used with varieties being the main plots and cutting ages the subplots. during regrowth, a complete randomized design was used. in both cases, there were four replications per treatment. dry matter yield among varieties was similar (4,360, 4,204, and 3,247 kg/dm/ha) for the varieties african, american and bn-2, respectively. the cp (15.36, 16.71, and 16.3%), ndf (60.55, 56.29, and 55.93%) and adf (34.55, 30.04, and 30.98%) concentrations as well as the leaf blade/stem percentages differed among african, american and bn-2 varieties, respectively. dry matter productivity, ndf, and adf concentrations increased with the advance of cutting age while leaf blade/stem ratio and cp decreased linearly. productivity was reduced during regrowth, however, the average cp (19.75, 20.21, and 20.43%), ndf (52.45, 53.19, and 53.42%) and adf (27.44, 26.72, and 27.06%) concentrations did not differ among african, american and bn-2 varieties during this period, respectively. the leaf blade/stem ratio, however, differed among them during regrowth. forage nutritive value at regrowth was greater than during first growth period. american and bn-2 varieties presented the highest leaf blade percentage while the african variety showed the highest stem percentage. thus, the best forage varieties are american and bn-2 and the best cutting age is 49 days.
Efeito do extrato de urucum na pigmenta??o da gema dos ovos
Silva, José Humberto Vilar da;Albino, Luiz Fernando Teixeira;Godói, Mauro José de Souza;
Revista Brasileira de Zootecnia , 2000, DOI: 10.1590/S1516-35982000000500022
Abstract: the experiment was carried out to evaluate the increasing levels of anatto extract (ae) oil in sorghum-based diets as the main energy source. a total of 280 laying hens in the second production cycle, 140 lohmann selected leghorn (lsl) and 140 isa brown (ib), was allotted to a density two birds/pen and full fed seven diets. the treatments consisted of a positive control corn based diet, as principal energy source, and a basal sorghum diet, as principal energy source, supplemented with 0.0, 0.10, 0.15, 0.30, 0.45, and 0.60% of ae. a completely randomized design in a 7 x 2 factorial arrangement (treatment and line), with five replicates of four birds, was used. the egg yolk colour was linearly improved by addition of ae to the sorghum-based diets. the brown-egg layers presented better egg yolk colour than the white-egg layers. the addition of 0.1% ae to the sorghum-based diets produced similar egg yolk colour as the corn based diets.
Parametros ruminais e desaparecimento da FDN da forragem em bovinos suplementados em pastagem na esta o das águas
Franco Gumercindo Loriano,Andrade Pedro de,Bruno Filho José Roberto,Diogo José Mauro da Silva
Revista Brasileira de Zootecnia , 2002,
Abstract: O objetivo do presente trabalho foi determinar o efeito de suplementos concentrados com diferentes degradabilidades da proteína (alta-75%, média-55% e baixa-35%) e o efeito da quantidade dos mesmos (0,5, 1,0 e 1,5 kg de MS/dia) sobre os parametros ruminais (pH e N-NH3) e o desaparecimento da FDN da forragem em bovinos pastejando Brachiaria brizantha cv. Marandu no período das águas. Foram utilizados dez bovinos canulados no rúmen com peso médio de 463 kg num esquema fatorial 3 x 3 com três repeti es (blocos). A técnica do saco de náilon e a simula o do pastejo foram usadas para alcan ar a cinética de degrada o da FDN da forragem. Foram determinadas as concentra es N-NH3 e o pH ruminais durante dois dias, em vários horários. N o houve efeito dos suplementos, tampouco da quantidade destes sobre o desaparecimento da FDN da forragem, mas houve para os diferentes tempos de incuba o, alcan ando o potencial máximo de degrada o (67,58%) às 96 horas de incuba o. O pH ruminal variou de 5,7 a 7,4 com média de 6,48, n o havendo efeito de tratamento e nem intera o tratamento x tempo. Já para os horários de determina o houve diferen as significativas. Para o N-NH3 ruminal houve diferen a significativa entre os tratamentos, sendo as maiores concentra es observadas para aqueles que apresentavam maior degradabilidade da proteína. Os primeiros horários após a suplementa o apresentavam um maior pico de N-NH3 e os picos do período da manh foram maiores que os da tarde. As diferentes concentra es de N-NH3 ruminal n o alteraram a degrada o da fibra.
Efeito do extrato de urucum na pigmenta o da gema dos ovos
Silva José Humberto Vilar da,Albino Luiz Fernando Teixeira,Godói Mauro José de Souza
Revista Brasileira de Zootecnia , 2000,
Abstract: O trabalho foi realizado para avaliar níveis de adi o do extrato de urucum (EU) a uma ra o em que o sorgo foi utilizado como principal fonte de energia. Um total de 280 poedeiras no segundo ciclo de produ o, 140 Lohmann Selected Leghorn (LSL) e 140 Isa Brown (IB), foi alojado em densidade de duas aves/gaiola e alimentado ad libitum com sete ra es. Os tratamentos consistiram de uma ra o controle positiva com milho, como principal fonte de energia, e uma ra o basal contendo sorgo, como principal fonte de energia, suplementada com seis níveis de EU em 0,0; 0,10; 0,15; 0,30; 0,45; e 0,60%. O delineamento foi inteiramente ao acaso em esquema fatorial 7 x 2 (tratamento e linhagem), com cinco repeti es de quatro aves. A adi o de EU à ra o à base de sorgo melhorou a pigmenta o da gema dos ovos linearmente. A linhagem IB apresentou melhor pigmenta o da gema dos ovos que a linhagem LSL. Os resultados permitiram concluir que a adi o de 0,1% de EU à ra o com sorgo promoveu similar pigmenta o da gema do ovo que a ra o à base de milho.
O projeto ícaro SAE-Aerodesign e sua contribui o para a forma o do engenheiro
Luiz Eduardo Miranda José Rodrigues,Fábio Vinícius da Silva,álvaro José de Mauro
Exacta , 2006,
Abstract: This article presents the ícaro SAE-Aerodesign project, developed by the students of the Mechanic Production Engineering course of the Centro Universitário Nove de Julho (Uninove) who took part in a competition destined to the pupils from the graduation on the Engineering, Physics and Aeronautic Sciences areas. The main purpose of this contest is to project, to document and to build an radio-controlled aircraft, capable to take off in a determined length of track, carrying in an appropriate compartment, the heaviest useful load possible. Besides the description of the ícaro team conquests in SAE-Aerodesign 2005 edition, the article refers to the competition s contribution to the engineer formation.
EFFECT OF FIBROLYTIC ENZYMES ON CHEMICAL COMPOSITION OF MAIZE SILAGE EFEITO DE ENZIMAS FIBROLíTICAS SOBRE A COMPOSI O QUíMICA DASILAGEM DE MILHO
Cristine dos Santos Settimi Cysneiros,Gumercindo Loriano Franco,Cirano José Ulhoa,José Mauro da Silva Diogo
Ciência Animal Brasileira , 2006,
Abstract: This experiment was carried out to determine theeffect of enzymatic solution on bromatologic compositionand in situ degradability for neutral detergent fiber (NDF)of maize silage. The treatments were four enzymatic levels,two fermentation periods and three replications. The levelsadopted were 0, 5, 10 and 20 mg of enzyme per kg of naturalmatter (MN) of grass. Experimental silos, in triplicate, wereopened 45 and 120 days after ensiling, and DM, NDF, crudeprotein (CP), N-NH3 and pH were analyzed. In the study ofin situ degradability of DM and NDF, silage of 45 days wascollected. Nylon bag technique was used with three canulatedbovine and three incubation times (6, 24 and 96 hours). Theexperimental period was of the 36 days. The solution didn’tchange the content of DM, pH and N-NH3 values of maize silage. There was no difference on the CP amongfermentation periods of, but there was interaction betweenperiod of storage and enzymatic level. The solution increasedfinal CP of maize silage after 45 days of ensiling and thiseffect was higher to 20 mg (10.14%) compared the control(8.77%). In case of NDF, maize silage treated with 10 mglevel showed lower fiber content (47.25%) versus untreatedcontrol (49.96%), suggesting an improvement in the nutritivevalue. There was no difference among period of storageneither interaction period of storage and enzymatic level.In situ rumen degradation showed no difference among thetreatments on NDF degradation of maize silage. KEY WORDS: additives, cellulases, degradability, hemicellulases, cell wall. Objetivou-se avaliar o efeito de níveis de enzimasfibrolíticas sobre a composi o bromatológica e adegradabilidade ruminal da fibra em detergente neutro(FDN) da silagem de milho. O experimento consistiu dequatro níveis enzimáticos, dois períodos de armazenamentoe três repeti es. Aplicaram-se, por aspers o, na ensilagem,os níveis enzimáticos de 0, 5, 10 e 20 mg de enzimas por kgde matéria natural (MN). Após 45 e 120 dias dearmazenamento, abriram-se os silos experimentais utiliza-dos em triplicata para avalia o do conteúdo de matériaseca (MS), FDN, proteína bruta (PB), nitrogênio amoniacalem rela o ao nitrogênio total (N-NH3/NT) e pH. Coleta-ram-se amostras após 45 dias de ensilagem para estudo dadegrada o ruminal in situ da FDN, empregando-se a atécnica do saco de náilon, de modo que três bovinos foramcanulados no rúmen, sendo os horários de incuba o de 6,24 e 96 horas. Verificou-se que a solu o enzimática n oalterou o conteúdo de MS, pH e N-NH3/NT da silagem demilho. Na PB, n o se observou diferen a entre os períodosde armaze
EFEITO DE ENZIMAS FIBROLíTICAS SOBRE A COMPOSI O BROMATOLóGICA DE SILAGENS DE CAPINS TROPICAIS
Cristine dos Santos Settimi Cysneiros,Gumercindo Loriano Franco,Cirano José Ulhoa,José Mauro da Silva Diogo
Ciência Animal Brasileira , 2006,
Abstract: Este trabalho foi desenvolvido para determinar o efeito de níveis de enzimas fibrolíticas sobre a composi o bromatológica e a degradabilidade ruminal da MS e da FDN das silagens de capim-braquiária e de capim-tanzania. O experimento consistiu de quatro níveis enzimáticos (0, 5, 10e 20 mg de enzimas por kg de matéria natural) e dois períodos de armazenamento (45 e 120 dias) e três repeti es. Após o armazenamento, os silos experimentais foram abertos para avalia o dos teores da MS, da PB, da FDN, do N-NH3/NT e do pH. Utilizou-se a técnica do saco de náilon,com três bovinos canulados no rúmen, horários de incuba o de 6, 24 e 96 horas e amostras do período de 45 dias de ensilagem. Verificou-se que as solu es enzimáticas n o alteraram o teor de MS, PB, N-NH3/NT e pH das silagens de capins. Para o capim-braquiária, a solu o enzimática alterou o teor da FDN, mas foi dependente do nível de enzimas.Verificou-se redu o da FDN para o nível de 20 mg (67,99%) em rela o ao tratamento-testemunha (70,28%). N o houve diferen a entre os períodos de armazenamento nem intera o entre período de armazenamento e nível enzimático. Para os parametros de degrada o ruminal da MS e da FDN das silagens de capins n o foram observadas diferen as entre os tratamentos. PALAVRAS-CHAVE: Aditivos, celulases, degradabilidade, hemicelulases, parede celular
Nutri??o mineral do feijoeiro em influência de nitrogênio e palhadas de milheto solteiro e consorciado com feij?o-de-porco
Teixeira, Cícero Monti;Carvalho, Gabriel José de;Silva, Carlos Alberto;Andrade, Messias José Bastos de;Paes, José Mauro Valente;
Acta Scientiarum. Agronomy , 2010, DOI: 10.4025/actasciagron.v32i3.4392
Abstract: this study was carried out to evaluate the effect of straws of millet (pennisetum typhoides (burm.) stapf) and millet plus jack bean (canavalia ensiformes (l.) dc.) intercropping and nitrogen fertilization levels on bean mineral nutrition in a no-till system. the experiment was carried out in a randomized blocks design and four replications in a split-plot arrangement, with the straws in the plots and nitrogen levels at sowing (30 and 60 kg ha-1) and at topdressing (0, 40, 80 and 120 kg ha-1) as a 2 x 4 + 1 factorial in sub-plots, plus an additional treatment with 30 kg ha-1 at sowing, without topdressing, and seed inoculation with rhizobium tropici with co and mo foliar application. the millet plus jack bean straw provide the highest n and mg contents. n topdressing levels increased n foliar concentration up to 116 kg ha-1, providing a linear effect in k and s contents and differenced effects on mg concentration, depending on the n level at sowing and straw combinations. the additional treatment increased the n concentration only in millet straw, k and cu in two straws, and reduced the ca and mg contents, under millet and millet plus jack bean straws, respectively. the topdressing levels increased the grain yield, with the bigger response in 30 kg ha-1 at of n sowing.
Germina??o e emergência de plantulas para três espécies de gramíneas invasoras de cultura do gênero Digitaria Heister ex Haller
Barbosa, José Marcos;Silva, Theóphilo Salem da;Andreani Junior, Roberto;Pitelli, Robinson Antonio;Barbosa, Luiz Mauro;
Acta Botanica Brasilica , 1989, DOI: 10.1590/S0102-33061989000300024
Abstract: this work deals with the germination of seeds and seedling emergence of digitaria ciliaris (retz.) koel., d. horizontalis willd. and d. insularis (l.) fedde and shows significant scientific and economical interest since the three weed grasses are very agressive and present ample geographical distribution in the tropical and subtropical american continent. the germination tests were performed monthly with seeds and caryopsis stored in a dry room or submitted to natural aging over the period of 360 days. this work was also realized to verify the effect of depth of seed planting on seedling emergence. results of percentage and rate of seed germination showed strong inhibition of germination caused by the bracts on the caryopsis. however, in the treatments with naked caryopsis the inhibition yet persist on germination process, indicating that these seeds may require a period of after ripening. results of seedling emergence showed that the seeds which were planted on the surface and at 2cm depht gave best seedling emergence percentages. the interpretation of the results of germination and seedling emergence shows important aspects of the germination behaviour of these species and permits their rational control in cultivated areas.
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