Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2019 ( 207 )

2018 ( 429 )

2017 ( 430 )

2016 ( 518 )

Custom range...

Search Results: 1 - 10 of 239373 matches for " Daniel de Magalh?es;Silva "
All listed articles are free for downloading (OA Articles)
Page 1 /239373
Display every page Item
Farelo de trigo e complexo enzimático na alimenta??o de poedeiras semipesadas na fase de produ??o
Araujo, Daniel de Magalhes;Silva, José Humberto Vilar da;Miranda, Edma Carvalho de;Araujo, José Anchieta de;Costa, Fernando Guilherme Perazzo;Teixeira, Elisanie Neiva Magalhes;
Revista Brasileira de Zootecnia , 2008, DOI: 10.1590/S1516-35982008000500010
Abstract: the study was carried out with the objective to evaluate the effects of the inclusion of the wheat bran (wb) with or without supplementation of an enzymatic complex (ec) on the performance of semi-heavy hens in the egg-production phase. a total of 288 lohmann brown pullets were used, distributed to a completely randomized design in 4 × 2 factorial arrangement, composed by four wb levels (0, 3, 6 and 9%) in the ration and enzymatic complex supplementation (0 or 100g/100 kg diet), with eight treatments and six replicates of six birds. the enzymatic complex contained the enzymes b-galactosidase, galactomananase, xilanase and a-glucanase. feed intake, final body weight, egg production, egg weight, egg mass, egg mass feed conversion or egg dozen feed conversion was not affected by wb inclusion in the diets. egg shell specific gravity deteriorated as wb levels increase in the diets. none of the characteristics was affected by the enzymatic complex supplementation, except for egg weight, that improved from 62.74 to 64.28 g. then, the use up to 9.0% of wheat bran in the ration is recommended for semi-heavily chickens in the production phase. the supplementation of a-galactosidase, galactomannanase, xylanase and a-glucanase improve egg weight.
Farelo de trigo na alimenta??o de poedeiras semipesadas na fase de recria
Araujo, Daniel de Magalhes;Silva, José Humberto Vilar da;Araujo, José Anchieta de;Teixeira, Elisanie Neiva Magalhes;Jord?o Filho, José;Ribeiro, Marcelo Luís Gomes;
Revista Brasileira de Zootecnia , 2008, DOI: 10.1590/S1516-35982008000100009
Abstract: this study aimed to evaluate the effect of the inclusion of the wheat bran (wb) in the ration on egg brown chicken (lohmann brown) performance in the growing phase 1 (7 to 19 week of age) and growing phase 2 (15 to 19 week of age) and its residual effects on initial egg production. one hundred-sixty chickens were allotted to a completely randomized design with four level of wb in the ration: 0 (control), 10, 20 and 30%, that resulted in four treatments, with five replicates of eight birds in the growing phase 1. at the 14th week, the birds were transferred to galvanized wire cages and reallocated in six replicates of six birds each. a total of 144 birds were used and, randomly, four birds per treatment were discarding per treatment, constituting the growing phase 2. the addition of the wb linearly decreased the final body weight and the weight gain, resulting in decreasing of 1.15 g and 0.0 3g, respectively for each 1% of wb inclusion in the ration. water intake show a quadratic effect and increased in absolute values with the addition of wb from 0 to 30%. the birds age at the first egg production and egg weight increased 0.6 day and 0.22 g, respectively for each 1% of wb in the ration. the inclusion of wb reduces chickens growth rate, delays posture starting and improves egg initial weight when compared to corn and soybean meal based diets.
Inclus?o de ovo desidratado em ra??es para frangos de corte nas fases pré-inicial e de crescimento
Teixeira, Elisanie Neiva Magalhes;Silva, José Humberto Vilar da;Ribeiro, Marcelo Luís Gomes;Costa, Fernando Guilherme Perazzo;Jord?o Filho, José;Araujo, Daniel de Magalhes;
Revista Brasileira de Zootecnia , 2008, DOI: 10.1590/S1516-35982008000700018
Abstract: the experiment was carried out to determine the optimum inclusion level of dried egg powder (degg) in the pre-initial and growing rations of broilers. male cobb-500 chicks (n= 1,152) with initial live weight of 43.46 ± 0.23 g were housed in cages of 1,0 × 1,5 m. a completely randomized design with four rations 0, (0.5, 1.0 and 1.5% of degg), each one with 18 replications of 16 birds. isoproteic and isoenergetic rations were used, with 21.9% cp and 2,950 kcal amen from 1 to 7 days old and 20.9% cp and 3,000 kcal amen from 8 to 21 days old. egg contents were dried at 55oc for 72 hours and were negative for salmonella spp. dried egg powder inclusion levels showed a quadratic effect on feed intake, live weight, weight gain and feed conversion. weight gain was obtained with the use of 0.53% dried egg powder in the ration in the pre-starter and 0.73% in the initial growth phase.
Inclus?o do ovo desidratado em ra??es peletizadas ou fareladas para frangos de corte
Teixeira, Elisanie Neiva Magalhes;Silva, José Humberto Vilar da;Costa, Fernando Guilherme Perazzo;Ribeiro, Marcelo Luís Gomes;Araujo, Daniel de Magalhes;Jord?o Filho, José;
Revista Brasileira de Zootecnia , 2007, DOI: 10.1590/S1516-35982007000600021
Abstract: the experiment was carried out to evaluate the effect of physical form diet (mash or pelleted) and inclusion of dehydrated egg (degg) up to 21 days of age on the performance and carcass characteristic of cobb-500 strain of broiler chicks at 42 days of age. the birds with average weight of 42.94 ± 0.51 g were allotted in pens of 1.0 x 1.5 m. the experimental design was completely randomized in factorial arrangment with two levels of degg (0 and 0.5%) and two physical form of diet (mash and pellet), resulting in four diets with 18 replicates of 16 birds during the phases from 1 to 7; 8 to 21; 22 to 33 and 34 to 42 days of age. the degg inclusion in the pre initial and initial diets did not influenced the performance, but the pelleted diet improved the performance of for broiler chicks up to 42 days. the pelleted diet also improved breast, pectoralis minor and fillet of breast yields in relationship to carcass weight, and increased the proventriculus and small intestine weights, while the mashed diet increased the gizzard weight.
Crescimento do fungo simbionte de formigas cortadeiras do gênero Acromyrmex em meios de cultura com diferentes extratos
Borba, Regina da Silva;Loeck, Alci Enimar;Bandeira, Juliana de Magalhes;Moraes, Caroline Leivas;Centenaro, Elias Daniel;
Ciência Rural , 2006, DOI: 10.1590/S0103-84782006000300002
Abstract: the cutter ants show preference for some vegetable species, which are constantly defoliated, while others are not attacked, although they are abundant and located close to the nest. the ants of the goods atta and acromyrmex cut plants and they transport pieces to the anthills. the vegetable material is used for the cultivation of the mushroom leucoagaricus gongylophorus, mushroom from of which theyfeed. several works using extracts of plants have been accomplished to evaluate the effect on the development of the mushroom symbiont. the objective of this work was to evaluate the influence of added culture means of different extracts on the growth of the l. gongylophorus mushroom. where mushrooms of the species acromyrmex ambiguus, acromyrmex crassispinus, acromyrmex heyeri and acromyrmex lundi were inoculated in the means nutritious ágar and bda, both added of molasses and extracts of lolium multiflorum lam., typha angustifolia l. and ant (atta sexdens piriventris). the pagnocca medium was used as pattern. the plates were maintained in cameras acclimatized to the temperature of 25 + 1°c and 24 hours of darkness, for a period of 49 days. the fungal growth was evaluated with base in the diameter of the colony, which was accomplished with weekly intervals, totalizing seven evaluations. also the dry weight was evaluated from the mushroom to the 53 days. the results showed that the mushroom cultivated by different species of ants has differentiated growth in culture means with different extracts.
Differential gene expression, induced by salicylic acid and Fusarium oxysporum f. sp. lycopersici infection, in tomato
Amaral, Daniel Oliveira Jord?o do;Lima, Marleide Magalhes de Andrade;Resende, Luciane Vilela;Silva, Márcia Vanusa da;
Pesquisa Agropecuária Brasileira , 2008, DOI: 10.1590/S0100-204X2008000800010
Abstract: the objective of this work was to determine the transcript profile of tomato plants (lycopersicon esculentum mill.), during fusarium oxysporum f. sp. lycopersici infection and after foliar application of salicylic acid. the suppression subtractive hybridization (ssh) technique was used to generate a cdna library enriched for transcripts differentially expressed. a total of 307 clones was identified in two subtractive libraries, which allowed the isolation of several defense-related genes that play roles in different mechanisms of plant resistance to phytopathogens. genes with unknown roles were also isolated from the two libraries, which indicates the possibility of identifying new genes not yet reported in studies of stress/defense response. the ssh technique is effective for identification of resistance genes activated by salicylic acid and f. oxysporum f. sp. lycopersici infection. not only the application of this technique enables a cost effective isolation of differentially expressed sequences, but also it allows the identification of novel sequences in tomato from a relative small number of sequences.
Levantamento de moscas-das-frutas e seus parasitoides em citros, no município de Vi?osa, Minas Gerais
Machado, Daniel Lucas Magalhes;Struiving, Tiago Barbosa;Santos, Dierlei dos;Souza, Silvana Aparecida da Silva;Siqueira, Dalmo Lopes de;
Revista Ceres , 2012, DOI: 10.1590/S0034-737X2012000600020
Abstract: fruit flies are responsible for large losses in commercial orchards in brazil, thus, it is important to know the predominant species in the region. the objective of this study was to study the occurrence of fruit flies (diptera: tephritoidae) and of their parasitoids in sweet orange (citrus sinensis l. osbeck), 'ponc?' mandarin (citrus reticulate blanco) and 'rio' tangerine (citrus deliciosa ten), in vi?osa, minas gerais. the fruits were collected in april 2008. in the laboratory, the fruits were stored in plastic boxes containing moist sand in a controlled environment, to obtain pupae. then, the pupae were counted, placed in glass bottles with fine sand and kept in an oven until adult emergence. only one species of fruit fly (anastrepha fraterculus (wiedemann, 1830) and one species of parasitoid (doryctobracon brasiliensis szépligeti) were identified. among the varieties, the sweet orange 'baianinha' showed the highest rate of infection and the lower were assigned to the 'rio' tangerine and 'ponc?' mandarin.
Efeitos da rela??o metionina + cistina: lisina sobre os desempenhos produtivo e econ?mico e a qualidade interna e externa dos ovos antes e após 28 dias de armazenamento
Jord?o Filho, José;Silva, José Humberto Vilar da;Silva, Edson Lindolfo da;Araujo, Daniel de Magalhes;Ribeiro, Marcelo Luís Gomes;Lima, Matheus Ramalho de;
Revista Brasileira de Zootecnia , 2006, DOI: 10.1590/S1516-35982006000600022
Abstract: the effect of different methionine + cystine (met+cis):total lysine (lis) ratios on performance and egg quality for semi-heavily laying hens was evaluated. one hundred and twenty lohmann brown hens with 44 weeks old were allotted to a completely randomized design with with five replicates and four treatments, as follows: t1= 0.76 met+cys:total lys ratio or 0.70% of met+cys and 0.92% of total lys; t2 = 0.83 met+cys: total lis ratio or 0.71% of met+cys and 0.85% of total lys; t3 = 0.85 met+cys: total lys ratio or 0.64% of met+cys and 0.75% of total lys; t4 = 0.86 met+cys: total lys ratio or 0.70% of met+cys and 0.81% of total lys. the performance variables and economical analysis were evaluated from 44 to 56 weeks old. at the end of trial, ten eggs per treatment were collected ad stored during 28 days for evaluation of internal/external egg quality before and after storage. with the exception of egg mass, no treatment effect on feed intake, egg production, egg weight and egg:mass ratio and egg:dozen ratio and egg shell specific quality was observed. the met+cys:lys ratio of 0.76 or the estimate of 0.70% of total met+cys and 0.92% of total lys can be recommended for the feeding of semiheavily laying hens. it was concluded that the storage affect internal egg quality.
Integrated Tools for American Cutaneous Leishmaniasis Surveillance and Control: Intervention in an Endemic Area in Rio de Janeiro, RJ, Brazil
Cheryl Gouveia,Rosely Magalhes de Oliveira,Adriana Zwetsch,Daniel Motta-Silva,Bruno Moreira Carvalho,Ant?nio Ferreira de Santana,Elizabeth Ferreira Rangel
Interdisciplinary Perspectives on Infectious Diseases , 2012, DOI: 10.1155/2012/568312
Abstract: American cutaneous leishmaniasis (ACL) is a focal disease whose surveillance and control require complex actions. The present study aimed to apply integrated tools related to entomological surveillance, environmental management, and health education practices in an ACL-endemic area in Rio de Janeiro city, RJ, Brazil. The distribution of the disease, the particular characteristics of the localities, and entomological data were used as additional information about ACL determinants. Environmental management actions were evaluated after health education practices. The frequency of ACL vectors Lutzomyia (N.) intermedia and L. migonei inside and outside houses varied according to environment characteristics, probably influenced by the way of life of the popular groups. In this kind of situation environmental management and community mobilization become essential, as they help both specialists and residents create strategies that can interfere in the dynamics of vector’s population and the contact between man and vectors. 1. Introduction American cutaneous leishmaniasis (ACL) is among the six most important infectious diseases and the 15 most neglected diseases of the world [1]. It presents a diversity of transmission cycles that involve different species of parasites, vectors, and hosts in restricted ecological niches [2]. Thus, the indication of control measures must consider the entomological and epidemiological characteristics of each locality. According to Sabroza et al. [3], for each disease and particular situation there are environmental and behavioral factors related to the production of endemic or epidemic processes. To explain these factors, Sabroza et al. [3, page 216] used the concept of conditions receptivity, defined as the “set of environmental, social and behavioral characteristics that allow the reproduction of the parasites and its maintenance in the communities.” The city of Rio de Janeiro presents many areas where these conditions are met, mainly because of human occupation of hillsides, which modifies the landscape and favors the installation of ACL transmission cycles. The number of cases in the city has been increasing since the 1980s, with the west zone presenting the highest indices, more specifically the region of Jacarepaguá [4]. Most of the cases in the study area (Campus FIOCRUZ da Mata Atlantica - CFMA, Rio de Janeiro) are related to the occupation of hillsides in Maci?o da Pedra Branca, an Atlantic Forest area. The present study aimed to discuss an experience on ACL surveillance based on integrated tools related to entomological
Farelo de trigo e complexo enzimático na alimenta??o de frangas de reposi??o
Araujo, Daniel de Magalhes;Silva, José Humberto Vilar da;Araujo, José Anchieta de;Ribeiro, Marcelo Luiz Gomes;Pascoal, Leonardo Augusto Fonseca;Costa, Fernando Guilherme Perazzo;
Ciência e Agrotecnologia , 2008, DOI: 10.1590/S1413-70542008000600040
Abstract: this study was carried out with the aim of evaluating the effects of the inclusion of the wheat bran (wb) and the addition of an enzymatic complex (ec), amylase, protease and celullase contained, on the performance of semi-heavily pullets from 14 weeks of age and its residual effect on egg-production phase. 288 pullets were used, distributed in a completely randomized design in a factorial arrangment 4x2, being the following levels of wb in the ration: 0 (control), 10, 20 and 30% x 0 or 50g of a ec/100 kg of diet, resulting in eight treatments, with six replicates of six birds. the ec contained the enzymes amylase, protease and celullase. in the growth phase, fi, wg, fc and lw showed better for the birds that received the diets without ft. the addition of the ec decreased the consumption in the diets with 0 and 30% of wb. during the production phase, the use ec in the level 0% of wb increased lw of the birds, but it reduced in the level 30% of wb. the production of eggs fell in the level of 20% of wb when the diet was supllementing with ec. the feed conversion in the level of 10% of wb was similar to the control. quadratic effect of the level of wb was observed on the feed egg-mass conversion, that was better with 8,01%. therefore, it is recommended up to 8.01% of inclusion of the wheat bran in the ration of semi-heavily pullets from 14 to 19 weeks of age.
Page 1 /239373
Display every page Item

Copyright © 2008-2017 Open Access Library. All rights reserved.