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Search Results: 1 - 10 of 177143 matches for " Valdir Silveira de;Mazzuco "
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Influência dos níveis de umidade na colheita e nas temperaturas de secagem de gr?os de trigo sobre desempenho, rendimento e composi??o de carca?a de frangos de corte
ávila, Valdir Silveira de;Mazzuco, Helenice;Portella, José Antonio;Ludke, Jorge Victor;Coldebella, Arlei;
Revista Brasileira de Zootecnia , 2004, DOI: 10.1590/S1516-35982004000600013
Abstract: this study was conducted to evaluate the influence of humidity levels at harvesting period and drying temperatures of wheat grain in isoprotein, isoenergy and isovolumetric diets on broiler performance. the wheat grains were harvested with 30, 16 and 13% of humidity levels and submitted to drying temperatures of 100, 70 and 40°c. the level of 13% of humidity was not submitted to drying. the diets were offered to birds in three distinct periods, 1-21; 22-35 and 36-42 days of age. the parameters evaluated were body weight gain, feed:gain ratio, feed intake and weight gain. during the three evaluated periods the body weight gain and during 22-35 days and 36-42 days the feed intake of broilers submitted to diets with wheat were higher. feed:gain ratio of broilers submitted to wheat diets during the 1-21 days period were lower. at 21 and 42 days of age, one bird representing the average body weight of each replicate was selected for processing and evaluation of carcass nutrient composition and crude energy content, however there were no differences for these parameters at both ages. birds representing the average body weight of all replicates were processed for determination of carcass yield at 42 days of age. in absolute terms carcass weights were higher than birds under the treatment with wheat, in spite of humidity at harvest and the following drying temperature applied. inclusion of wheat in broiler diets in levels of 50 % in substitution of corn is technically feasible during all the raising period (1 42 days), in spite of humidity at harvest and drying temperature.
Composi??o química e energética do milho com diversos níveis de umidade na colheita e diferentes temperaturas de secagem para frangos de corte
Mazzuco, Helenice;Lorini, Irineu;Brum, Paulo Antonio Rabenschlag de;Zanotto, Dirceu Luis;Barioni Junior, Waldomiro;Avila, Valdir Silveira de;
Revista Brasileira de Zootecnia , 2002, DOI: 10.1590/S1516-35982002000900009
Abstract: the experiment was conducted to evaluate the effects of moisture levels at harvest and drying temperatures of corn on its chemical composition and apparent metabolizable energy corrected to zero nitrogen retention (amen) to broiler chickens. the corn was harvested with 35%, 25%, 18%, 15.3% and 14.3% of moisture and submitted to drying temperatures of 100, 70 and 40 oc. the moisture levels of 15.3% and 14.3% of corn were not submitted to drying and the last value represented the treatment post-harvesting (60 days after the first harvest). the chemical composition was determined by aoac (1995) and amen assay was carried out by total collection procedure as described by hill and anderson (1958) and methodology of matterson et al. (1965). when the amen values were considered on as fed basis, significant differences occured between the treatment of corn no drying and the others. the mean amen value was 11.8% less in energy (2864kcal/kg) relative to the highest value (3247kcal/kg).this is due to grain humidity having reached 24% on that treatment caused by natural grain natural re-hydration. when the energy values of corn were changed to dry-matter basis, there were no differences among the treatments. there were no major changes in nutritive value of corn harvested with different moisture levels and submitted to various drying temperatures, compared to expected standards, except the amen value (as fed basis) when the corn was no drying.
Influência do estádio de matura??o na colheita e temperatura de secagem de gr?os de trigo sobre os valores de energia metabolizável aparente corrigida (EMAc) em frangos de corte
Mazzuco, Helenice;Portella, José Antonio;Barioni Junior, Waldomiro;Zanotto, Dirceu Luis;Miranda, Martha Zavariz de;Avila, Valdir Silveira de;
Revista Brasileira de Zootecnia , 2002, DOI: 10.1590/S1516-35982002000900010
Abstract: an experiment was performed to evaluate the chemical composition values and apparent metabolizable energy corrected for nitrogen excretion (amen) of wheat grain harvested at different maturity stage (13, 16, 20 and 30% of humidity levels) and drying temperatures (40, 70 and 100 oc). the grain with 13% of humidity level was considered dried at harvest and was not submitted to drying. the level of 16% of grain humidity at harvesting and the drying temperature of 40 oc provided the highest amen wheat value (3326 kcal/kg, as fed basis). harvesting humidity and drying temperature affected the nutritional value of wheat. it is necessary to know the best maturity stage at harvest and drying temperatures of wheat grains regarding the variability on its nutritive value and inclusion into poultry diets.
Um caso de leishmaniose cutaneo-mucosa tratado com sucesso com baixa dose de antimonial pentavalente
Amato Valdir Sabbaga,Oliveira Luciana Silveira de,Silva Anita Campos Mendon?a,Machado Flávia Ribeiro
Revista da Sociedade Brasileira de Medicina Tropical , 1998,
Abstract: Os autores relatam um caso de leishmaniose cutaneo-mucosa em uma paciente de 89 anos, diabética e hipertensa, tratada inicialmente com alopurinol por 10 meses n o havendo cicatriza o das les es. Posteriormente, recebeu antimoniato de N-metil glucamina (glucantime) por 4 dias, na dose total de 2.380mg do Sb v, mas desenvolveu cardiotoxicidade e hipocalemia, sendo suspenso o tratamento, entretanto, evoluiu com regress o clínica total das les es, apesar de ter recebido pequena dose desta medica o.
Substitui o de farinhas de origem animal por ingredientes de origem vegetal em dietas para frangos de corte
Bellaver Claudio,Costa Carlos Alberto Fagonde,Avila Valdir Silveira de,Fraha Marcos
Ciência Rural , 2005,
Abstract: Devido às exigências de alguns importadores, por motiva o cultural ou devido a zoonoses recém acontecidas na Europa, tem havido um direcionamento para fabrica o de ra es vegetais com base em milho e farelo de soja (FS). Esse direcionamento traz conseqüências na produ o e por isso, objetivou-se avaliar a resposta de frangos de corte alimentados com dietas contendo farinhas de carne e ossos (FCO) e farinha de vísceras de aves (FV) e dietas contendo milho e FS. As dietas foram calculadas para conterem 3.050 e 3.150 kcal EM/kg de ra o nas fases inicial e de crescimento, respectivamente, e com os demais nutrientes calculados para atenderem às exigências das aves. A substitui o de ingredientes foi testada variando-se os níveis de proteina nas fases inicial e de crescimento respectivamente, da seguinte forma: 1. Dieta com inclus o de 4% de FCO suína e 3% de FV, calculada por proteína ideal, com 22% (inicial) e 20 % de PB (crescimento); 2. Dieta semelhante à dieta 1, sem farinhas de origem animal, formulada a base de milho e FS, com PB e lisina digestível semelhantes à dieta 1; 3. Dieta semelhante à dieta 2, com 23% (inicial) e 21% de PB (crescimento) e lisina digestível semelhante a dieta 1; 4. Dieta semelhante à dieta 2, com 24% (inicial) e 22% de PB (crescimento) e lisina digestível 6% e 5% superiores à dieta 1. Houve diminui o significativa da matéria seca da cama das aves devido à presen a de ingredientes exclusivamente vegetais e aumento do teor de proteína das dietas (P<0,0002), sendo que as fêmeas apresentam maior teor de matéria seca das camas do que os machos (P<0,0003). O desempenho das aves alimentadas com proteína de origem vegetal foi superior ao de dietas contendo proteína animal; porém, em geral, é maior o custo de dietas exclusivamente vegetais. Nas dietas de origem vegetal, a dieta 4, com níveis superiores de aminoácidos, proporcionou melhor desempenho (P<0,0002), n o havendo resposta ao aumento apenas da PB. N o houve diferen a nos cortes da carca a devida às fontes protéicas (P>0,05); havendo, porém, maior peso dos pés (P<0,01) nas dietas com menor porcentagem de matéria seca da cama de aviário.
Determina??o do período de coleta total de excretas para estimativa dos valores de energia metabolizável em frangos de corte
Avila, Valdir Silveira de;Paula, Aline;Brum, Paulo Ant?nio Rabenschlag de;Coldebella, Arlei;Maier, Jo?o Carlos;
Revista Brasileira de Zootecnia , 2006, DOI: 10.1590/S1516-35982006000700012
Abstract: the effects of total excreta collection period length on estimated values of metabolizable energy [apparent (ame) and nitrogen corrected (amen)] were evaluated in broiler chickens from 19 to 23 days of age. five treatments with six replicates were used in a randomized block design, in a total of 300 broiler chicks for the control and 300 broiler chicks for the reference diet. the control replaced 40% of reference diet with corn. after diet adaptation (four days), total excreta collection was performed during 1, 2, 3, 4 or 5 days, that consisted the treatments. data were submitted to anova using the glm procedure of sas (2001), with subsequent multiple mean comparison using tukey test. observed mean values of metabolizable energy for corn, as-fed basis, for the collection periods (1, 2, 3, 4 or 5 days) with the respective coefficients of variation (%), for ame (kcal/kg) were: 3,814 (7.26), 3,511 (5.32), 3,563 (2.51), 3,512 (1.31), and 3,489 (1.00) and for amen (kcal/kg) were: 3,709 (6.68), 3,434 (4.85), 3,482 (2.31), 3,438 (1.11), and 3,423 (1.03), respectively. it was concluded that a 4-d collection period is recommended to compose corn me data with the same confidence as those of 5-d collection period.
Uso da metodologia de coleta total de excretas na determina??o da energia metabolizável em ra??es para frangos de corte ajustadas ou n?o quanto aos níveis de vitaminas e minerais
Avila, Valdir Silveira de;Paula, Aline;Brum, Paulo Ant?nio Rabenschlag de;Barioni Júnior, Waldomiro;Maier, Jo?o Carlos;
Revista Brasileira de Zootecnia , 2006, DOI: 10.1590/S1516-35982006000600016
Abstract: the objective of this study was to evaluate the effects of vitamin and micromineral levels adjustment in the test diet on the total collection method for determination of apparent metabolizable energy (ema) and apparent metabolizable energy corrected by nitrogen retention (eman) of soybean meal. two treatments were compared: the test diet without or with adjustments in the amounts of choline chloride and vitamin-micromineral premix, when 40% of the reference diet was replaced with soybean meal. the traditional total feces collection method was used, with 360 ross broilers from 15 to 23 days old. the chickens were allotted to batteries as a randomized block design, with two treatments and 12 ten-birds replicates (five males and five females). mean values and respective standard errors for ema and eman (kcal/kg) of soybean meal, as-fed basis, were of 2,462±29.62 and 2,269±25.80 for the adjusted diet and 2,353±26.18 and 2,191±23.88 for the diet without vitamin and micromineral adjustment. adjustments of the amounts of choline choride and vitamin-micromineral premix in the test diet led to higher ema and eman compared to the control test diet with no adjustments. therefore, vitamin and micromineral levels in the test diet should be adjusted to the reference diet in experiments determining the metabolizable energy of feedstuffs used in poultry diets.
Biomass production and essential oil yield from leaves, fine stems and resprouts using pruning the crown of Aniba canelilla (H.B.K.) (Lauraceae) in the Central Amazon
Manh?es, Adriana Pellegrini;Veiga-Júnior, Valdir Florêncio da;Wiedemann, Larissa Silveira Moreira;Fernandes, Karenn Silveira;Sampaio, Paulo de Tarso Barbosa;
Acta Amazonica , 2012, DOI: 10.1590/S0044-59672012000300007
Abstract: aniba canelilla (h.b.k.) mez. is a tree species from amazon that produces essential oil. the oil extraction from its leaves and stems can be an alternative way to avoid the tree cutting for production of essential oil. the aim of this study was to analyse factors that may influence the essential oil production and the biomass of resprouts after pruning the leaves and stems of a. canelilla trees. the tree crowns were pruned in the wet season and after nine months the leaves and stems of the remaining crown and the resprouts were collected, in the dry season. the results showed that the essential oil yield and chemical composition differed among the stems, leaves and resprouts. the stems' essential oil production differed between the seasons and had a higher production in the resprouting stems than the old stems of the remaining crown. the production of essential oil and leaf biomass of resprouts were differently related to the canopy openness, indicating that light increases the production of the essential oil and decreases the biomass of resprouting leaves. this study revealed that plant organs differ in their essential oil production and that the canopy openness must be taken into account when pruning the a. canelilla tree crown in order to achieve higher oil productivity.
Avalia??o de materiais alternativos em substitui??o à maravalha como cama de aviário
Avila, Valdir Silveira de;Oliveira, Ubirajara de;Figueiredo, Elsio Antonio Pereira de;Costa, Carlos Alberto Fagondes;Abreu, Valéria Maria Nascimento;Rosa, Paulo Sérgio;
Revista Brasileira de Zootecnia , 2008, DOI: 10.1590/S1516-35982008000200013
Abstract: aiming to evaluate alternative materials to be used as broiler litter reutilization, six consecutive lots of 5,600 female broilers were allocated to 35 pens. the treatments consisted of seven types of litter materials: wood shavings, rice husk, ground corncob, chopped camerongrass, chopped soybean straw, chopped corn stalk and sawdust, each one with five replications. in the birds, it was evaluated the average body weight, feed consumption and in the litter, it was evaluated the contents of n, ca, p and ph. the presence of salmoella, the eimeria oocists counting in the litter, and the gut birds lesions score at slaughter were also observed. the use of alternative materials evaluated as litter, per six concecutive lots, as a alternative for wood shavings did no prejudice the performance of broilers. these materials, by presenting mineral values higher than wood shavings, after discarding, could be used as culture fertilizers.
Substitui??o de farinhas de origem animal por ingredientes de origem vegetal em dietas para frangos de corte
Bellaver, Claudio;Costa, Carlos Alberto Fagonde;Avila, Valdir Silveira de;Fraha, Marcos;Lima, Gustavo Júlio Mello Monteiro de;Hackenhar, Leandro;Baldi, Paulo;
Ciência Rural , 2005, DOI: 10.1590/S0103-84782005000300030
Abstract: the demand of some importers due to cultural reasons or to zoonosis that recently emerged in europe, there has been a trend to manufacture vegetable feeds based on corn and soybean meal (sbm). this influences live production, and therefore, this study aimed at evaluating the response of broilers fed diets containing either meat and bone meal (mbm) and offal meal (om), or vegetable diets based on corn and sbm. diets were calculated to supply 3050 and 3150 kcal me/kg for the starter and grower phase, respectively, as well as to supply the requirements for all the other nutrients. the following treatments were tested: 1. diet with inclusion of 4% swine mbm and 3% om, calculated on ideal protein basis, containing 22% and 20% cp in the starter and grower phase, respectively; 2. diet similar to 1, with no inclusion of animal meals, based on corn and sbm (similar cp and digestible lysine as to diet 1); 3. diet similar to 2, but with 23% and 21% cp (digestible lysine similar to diet 1); diet similar to 2, but with 24% and 22% cp (digestible lysine 6% and 5% higher than in diet 1). dry matter content of the litter of birds fed exclusively vegetable ingredients and higher protein levels significantly deceased (p<0.0002), and it was higher in females as compared to males (p<0.0003). the performance of birds fed vegetable diets was better than of those fed diets containing animal protein. however, the cost of exclusively vegetable diets is higher. diet 4, a vegetable diet with higher amino acid levels, promoted the best performance (p<0,0002), but there was no response to the increase of only cp. there was no difference in carcass cuts due to protein sources (p>0.05), but the feet weight was higher (p<0.01) in birds with lower dry matter content in the litter
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