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Search Results: 1 - 10 of 552619 matches for " Lira Mário de Andrade "
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Consumo e comportamento ingestivo de caprinos e ovinos alimentados com palma gigante (Opuntia ficus-indica Mill) e palma orelha-de-elefante (Opuntia sp.) = Intake and ingestive behavior of sheep and goats fed with cactus pear (Opuntia ficus-indica Mill) and prickly pear (Opuntia sp.)
Maria Caroline de Almeida Cavalcanti,?ngela Maria Vieira Batista,Adriana Guim,Mário de Andrade Lira
Acta Scientiarum : Animal Sciences , 2008,
Abstract: O presente trabalho teve por objetivo avaliar o consumo e comportamento ingestivo de caprinos e ovinos alimentados com palma Gigante (Opuntia ficus-indica Mill) e palma Orelhade-elefante (Opuntia sp.). Foram utilizados 20 animais mesti os, sendo dez caprinos e dez ovinos, alojados em galp o coletivo, contidos individualmente por meio de cordas, distribuídos em delineamento inteiramente casualizado, em um arranjo fatorial 2 x 2 (duas espécies animais e duas variedades de palma). As observa es comportamentais foram realizadas em intervalos de 5 min. por um período de 24h. Os consumos de matéria seca, extrato etéreo, fibra em detergenteácido, carboidratos totais e carboidratos n o-fibrosos foram menores (p < 0,05) quando os animais recebiam palma Orelha-de-elefante. N o houve efeito da variedade de palma, da espécie animal e da intera o espécie animal x variedade de palma (p > 0,05) sobre o tempo gasto comalimenta o e eficiência de alimenta o. O tempo gasto com rumina o foi maior para a dieta com palma Gigante, consequentemente os animais da dieta com palma Orelha-de-elefante permaneceram mais tempo em ócio. Comparando as espécies caprina e ovina, verificou-se que aeficiência de rumina o, tanto de MS quanto de FDN, foi maior para a espécie ovina. Os animais gastaram mais tempo ruminando deitados do que em pé, mas n o foi verificada diferen a quanto ao lado escolhido para deitarem. The objective of this study was to evaluate the intake and ingestive behavior of sheep and goats fed with cactus pear (Opuntia ficus-indica Mill) and prickly pear (Opuntia sp.). Twenty crossbred animals – 10 sheep and 10 goats – were used. They were lodged in a collective shed, contained individually with ropes, distributed using a completely randomized design, and treated with a 2 x 2 factorial arrangement (2 animal species and 2 varieties of cactus). Behavioralobservations were made at five-minute intervals during a 24-hour period. Dry matter, ether extract, acid detergent fiber, total carbohydrate and non-fibrous carbohydrate intake were reduced (p < 0.05) by prickly pear. There was no effect from cactus variety, animal species or animal species x cactus variety interaction (p > 0.05) on feeding time and feeding efficiency. The time spent with rumination was greater for the diet with prickly pear, and the animals on the prickly pear diet remained more time idle. Comparing goats and sheep species, it was verified that the rumination efficiency, for both DM and NDF, was greater for sheep species. The animals spent more time ruminating lying than standing, but no difference
Manejo de colheita e espa amento da palma-forrageira, em consórcio com sorgo granífero, no Agreste de Pernambuco
FARIAS IDERVAL,LIRA MáRIO DE ANDRADE,SANTOS DJALMA CORDEIRO DOS,TAVARES FILHO JOSé JORGE
Pesquisa Agropecuária Brasileira , 2000,
Abstract: Este trabalho foi realizado na zona semi-árida de Pernambuco e teve como objetivo investigar o efeito de espa amento, e a freqüência e intensidade de colheitas da palma-forrageira (Opuntia ficus-indica Mill.) consorciada com sorgo granífero (Sorghum bicolor (L.) Moench). O delineamento experimental foi o de blocos ao acaso em parcelas subdivididas, sendo os espa amentos alocados nas parcelas principais, e as freqüências e intensidades de colheitas, nas subparcelas. Os resultados s o de um período de 12 anos, e as produ es de matéria seca de palma, de gr os e restolhos de sorgo foram: 5,23, 1,65 e 2,07; 4,51, 1,30 e 2,10; 2,75, 1,97 e 3,51 t/ha/ano, em espa amentos de 2,0 m x 1,0 m; 3,0 m x 1,0 m x 0,50 m e 7,0 m x 1,0 m x 0,50 m, respectivamente. A produ o de matéria seca foi diferente entre as freqüências de corte, quando foram conservados os artículos primários: 4,08 t/ha/ano na freqüência de quatro anos, e de 3,43 t/ha/ano na freqüência de dois anos. A produ o de palma aumentou com o período de crescimento da planta, nas duas intensidades de corte estudadas. A composi o química dos artículos de palma e dos restolhos de sorgo foi pouco afetada pelos tratamentos.
Repetibilidade de variáveis produtivas e qualitativas da forragem e da excreta bovina em pastagem de braquiária
Teixeira, Vicente Imbroisi;Dubeux Jr., José Carlos Batista;Mello, Alexandre Carneiro Le?o de;Lira Jr., Mário de Andrade;Lira, Mario de Andrade;Saraiva, Felipe Martins;
Pesquisa Agropecuária Brasileira , 2011, DOI: 10.1590/S0100-204X2011000600012
Abstract: the objective of this work was to determine the repeatability and the number of the required evaluations to obtain determination coefficient greater than 90% in the productive and qualitative variables of forage and cattle excreta on a signal grass (urochloa decumbens) pasture. the utilized variables were: fecal production, feces mineral composition, herbage mineral composition around dung pads, feces biometry, herbage mass and herbage rejection around dung pads, urinary volume, and urine chemical composition. a fixed rotational stocking was used, with three days of occupation and 32 or 67 days of resting period, during the rainy and dry seasons, respectively. repeatability analyzes were obtained with the software genes, using the principal component method based on the covariance. the repeatability coefficients (r) had high estimates, and the r2 were equal to or greater than 90%, except for herbage mass at 20-40 cm, for the difference between pre-and post-grazing herbage height of herbage grown on dung pad, and for nitrogen concentration in the urine for the treatment with 3,2 animal units per hectare (r<0.50). for r2 above 90%, the number of evaluations required would be 11, 9, and 9, for the variables forage, feces, and urine, respectively.
Deposi??o e acúmulo de matéria seca e nutrientes em serapilheira em um bosque de sabiá (Mimosa caesalpiniifolia Benth.)
Ferreira, Rinaldo Luiz Caraciolo;Lira Junior, Mario de Andrade;Rocha, Mallon Sampaio da;Santos, Mércia Virginia Ferreira dos;Lira, Mário de Andrade;Barreto, Levy Paes;
Revista árvore , 2007, DOI: 10.1590/S0100-67622007000100002
Abstract: quantification of litter deposition and organic mantle accumulation are important steps on nutrient cycling studies. this study aimed to quantify litter deposition and organic mantle in a sabiá (mimosa caesalpiniifolia benth) woodlot in an experimental farm in the brazilian northeast region. twenty 0.50 x 0.50 x 0.15 m wood collectors, to quantify litter deposition, were systematically distributed over the area elevated 30 cm above the soil. deposited material was collected monthly from october 2000 to september 2001, and separated into leaves, twigs, flowers, pods and mixed portions. undecomposed organic mantle was randomly sampled nearby collector boxes, to a total of 20 monthly samples, from which a 0.30 x 0.30 m composed sample was collected. the collected material was also hand separated into leaves, twigs, flowers, pods and mixed portions. all collected material was dried at 60°c until constant weight was achieved. highest monthly litter deposition and leaf and pod fractions occurred in october, probably due to initiation of dry period. litter deposition and stock were estimated at 7830.44 kg.ha-1.year-1 and 8906.9 kg.ha-1, respectively, with the leaf fraction dominating. leaf fraction was the richest in nutrient content.
Efeito do Estádio Vegetativo do Sorgo (Sorghum bicolor, (L.) Moench) sobre a Composi o Química da Silagem, Consumo, Produ o e Teor de Gordura do Leite para Vacas em lacta o, em Compara o à Silagem de Milho (Zea mays (L.))
Dias Argélia Maria Araújo,Batista ?ngela Maria Vieira,Ferreira Marcelo de Andrade,Lira Mário de Andrade
Revista Brasileira de Zootecnia , 2001,
Abstract: Este trabalho foi conduzido com o objetivo de avaliar o efeito do estádio de matura o do sorgo sobre a composi o química da silagem, o consumo, a produ o e o teor de gordura do leite em vacas holandesas, em compara o à silagem de milho. O experimento foi realizado na esta o experimental da Empresa Pernambucana de Pesquisa Agropecuária - IPA, localizada em S o Bento do Una-PE. Foram utilizadas nove vacas holandesas puras, em fase de lacta o, distribuídas em três quadrados latinos. Os quadrados foram formados de acordo com a produ o de leite e a ordem de lacta o e constavam de três vacas e três períodos. Cada período teve dura o de 28 dias. Os tratamentos consistiram de: SM - silagem de milho; SSE - silagem de sorgo fase de emborrachamento; SSL - silagem de sorgo gr o leitoso. Foram ainda fornecidos 25 Kg de palma forrageira animal/dia e concentrado comercial de acordo com a produ o de leite. A silagem de milho propiciou aos animais maior consumo médio de matéria seca da silagem e da dieta total. N o houve efeito significativo do estádio vegetativo do sorgo sobre o consumo de silagem. As produ es de leite total e corrigida para 4% de gordura foram maiores nos animais que consumiram silagem de milho em rela o aos que receberam silagem de sorgo no estádio de gr o leitoso, todavia os que ingeriram silagem de sorgo na fase de emborrachamento n o diferiram dos demais. Quanto ao teor de gordura do leite, n o houve diferen a significativa entre as silagens analisadas.
Comportamento de linhagens de sorgo forrageiro submetidas a déficit hídrico sob condi o controlada
Amaral Sérgio Ribeiro do,Lira Mário de Andrade,Tabosa José Nildo,Santos Mércia Virginia Ferreira dos
Pesquisa Agropecuária Brasileira , 2003,
Abstract: O objetivo deste trabalho foi avaliar os efeitos do estresse hídrico no estabelecimento, desenvolvimento e na taxa de sobrevivência de 11 linhagens de sorgo forrageiro em casa de vegeta o. O delineamento experimental foi o de blocos ao acaso no arranjo de parcelas subdivididas no tempo, com cinco repeti es. As unidades experimentais foram constituídas por recipientes de 250 L, onde foram colocados 187,9 kg de solo da classe textural areia franca. O estudo compreendeu dois períodos de estresse, e três irriga es, sendo uma no início e as outras aplicadas quando grande número de folhas tinham aspecto de palha seca. No primeiro período, as linhagens apresentaram alta taxa de sobrevivência, demonstrando resistência ao estresse hídrico. As linhagens que apresentaram menor velocidade de crescimento nesse período sofreram menos com o estresse. No segundo período n o ocorreram diferen as significativas entre as linhagens com rela o ao desenvolvimento das plantas. Durante os dois períodos de estresse, a velocidade de crescimento n o diferenciou satisfatoriamente linhagens de comportamento distintos, quanto à resistência à seca, competindo em um mesmo recipiente e em alta densidade populacional. As linhagens 84, 29, 99, 41, 63 e 104 apresentaram maior resistência ao estresse hídrico e as linhagens 33, 38, 40, 67 e 92, menor resistência.
Caro?o de algod?o em dietas à base de palma forrageira para vacas leiteiras: síntese de proteína microbiana
Melo, Airon Aparecido Silva de;Ferreira, Marcelo de Andrade;Véras, Antonia Sherlanea Chaves;Lira, Mário de Andrade;Lima, Luiz Evandro;Pessoa, Ricardo Alexandre Silva;
Revista Brasileira de Zootecnia , 2007, DOI: 10.1590/S1516-35982007000400022
Abstract: the objective of this trial was to investigate the effects of partial replacement of sorghum silage and soybean meal with whole cottonseed on microbial protein synthesis and efficiency and nitrogen metabolism in lactating holstein cows receiving forage cactus based diets. five animals were randomly assigned to a 5 × 5 latin square design and were fed diets containing (% of dm): 0.0, 6.25, 12.50, 18.75, and 25.00% of whole cottonseed. inclusion of whole cottonseed in the diet did not affect microbial nitrogen and microbial protein synthesis, which averaged 295.08 and 1844.27 g/day, respectively. microbial protein synthesis and microbial nitrogen efficiency decreased linearly by 0.30 and 1.43 g per each 1% inclusion of whole cottonseed in the diet. urinary urea and concentration of urea and urea-n in plasma and milk were not affected by increasing the levels of dietary whole cottonseed. it can be concluded that the inclusion of up to 25% of whole cottonseed (% of diet dm) had no detrimental effects on microbial protein synthesis and n utilization in lactating cows fed forage cactus based diets.
Efeito do Estádio Vegetativo do Sorgo (Sorghum bicolor, (L.) Moench) sobre a Composi??o Química da Silagem, Consumo, Produ??o e Teor de Gordura do Leite para Vacas em lacta??o, em Compara??o à Silagem de Milho (Zea mays (L.))
Dias, Argélia Maria Araújo;Batista, ?ngela Maria Vieira;Ferreira, Marcelo de Andrade;Lira, Mário de Andrade;Sampaio, Ivan Barbosa Machado;
Revista Brasileira de Zootecnia , 2001, DOI: 10.1590/S1516-35982001000800018
Abstract: this work aimed to evaluate the effect of the sorghum growth stage on the silage chemical composition, intake milk production and fat compared with corn silage to dairy cows. the experiment was carried out at the "s?o bento do una" research stattion, from ipa, located in "s?o bento do una", pernambuco, brazil. nine holstein lactating cows were distributed in three latin squares design. the squares were formed according to milk yield and the lactating order and consisted of three cows and three periods. each period was performed by 28 days. the following treatments were tested: cs ? corn silage, ssb ? sorghum silage in a boot stage and, ssm ? sorghum silage in a milk grain stage in addition to 25 kg of spineless cactus animal/day and commercial concentrate according to milk production. the animals fed with corn silage showed the highest dry matter intake of the silage and of the total diet, when compared to those fed with sorghum silage at the two growth stage tested. there were no significant effects of the vegetative stage on sorghum silage intake. it was observed higher milk yield and 4% fat corrected milk yield for the animals that consumed corn silage compared to the animals that received sorghum silage in the milk grain stage. the cows fed with sorghum silage at the boot stage did not differ fron those fed the other two treatments. no significant differences were observed among the tested silages for the milk fat content.
Distribui??o de biomassa e nutrientes na aréa de Mimosa caesalpiniaefolia Benth
Moura, Orieudo Nunes;Passos, Marco Ant?nio Amaral;Ferreira, Rinaldo Luiz Caraciolo;Molica, Silmar Gonzaga;Lira Junior, Mario de Andrade;Lira, Mário de Andrade;Santos, Mércia Virginia Ferreira dos;
Revista árvore , 2006, DOI: 10.1590/S0100-67622006000600002
Abstract: this work was carried out at itambé experimental station, in the state of pernambuco, brazil, to study biomass and nutrient distribution in stands of mimosa caesalpiniaefolia benth. two stands with similar soil and topographical conditions were studied, involving plants eight and eleven years old, at 3.0 x 3.0 m and 4.5 x 4.5 m spacing, respectively. the biomass of each tree component was determined. samples of leaves, branches, bark and stem were collected and chemically analyzed. total biomass was 66.22 and 80.78 t/ha in stands i and ii, respectively. biomass distribution in stands i and ii was: branches (44.99 and 53.40%), wood (51.53 and 44.58%), bark (2.39 and 1.40%) and leaves (1.10 and 0.62%). nutrients of the components for both stands showed the following concentration trend: nitrogen > calcium > potassium > magnesium > sulfur > phosphorus.
Caracteriza??o e Sele??o de Clones de Capim-Elefante (Pennisetum purpureum Schum.) na Zona da Mata de Pernambuco
Mello, Alexandre Carneiro Le?o de;Lira, Mário de Andrade;Dubeux Júnior, José Carlos Batista;Santos, Mércia Virgínia Ferreira dos;Freitas, Erinaldo Viana de;
Revista Brasileira de Zootecnia , 2002, DOI: 10.1590/S1516-35982002000100004
Abstract: this work aimed to characterize an elephantgrass collection (pennisetum purpureum schum.) comprising 71 clones and selecting the best ones to be tested later under grazing conditions. it was carried out at cedro experimental station - ipa, located in vitória de santo ant?o, forest zone of pernambuco state. the period of evaluation included both the raining and the dry season. each clone was represented by a non-replicated plot of 10 m2. according to linear correlation analysis, the more productive clones also showed highest plant height and highest growing point height, greatest stem diameter, highest stem/leaf ratio, highest basal and total tiller numbers and greatest leaf lenght. the same characteristics above were also positively correlated with the leaf blade yield, except stem/leaf ratio. there was a high correlation coefficient (r = 0.9517) between dry matter yield and leaf blade yield. the selection of clones to be tested under grazing conditions was based on the materials that showed the highest leaf blade yield. these materials were: mineir?o/ipeaco, hexaplóide, mole de volta grande, king grass, 591-76 or cameroon, ce 5 ad, gigante de pinda, ce 4 ad, elefante da col?mbia and vrukwona
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