Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Any time

2019 ( 143 )

2018 ( 314 )

2017 ( 329 )

2016 ( 355 )

Custom range...

Search Results: 1 - 10 of 178046 matches for " Rilke Tadeu Fonseca de;Fialho "
All listed articles are free for downloading (OA Articles)
Page 1 /178046
Display every page Item
Planos nutricionais com a utiliza??o de aminoácidos e fitase para frangos de corte mantendo o conceito de proteína ideal nas dietas
Gomide, Elisangela Minati;Rodrigues, Paulo Borges;Freitas, Rilke Tadeu Fonseca de;Fialho, Elias Tadeu;
Revista Brasileira de Zootecnia , 2007, DOI: 10.1590/S1516-35982007000800009
Abstract: this study was carried out to evaluate the performance and characteristics of carcass of broiler chickens fed diets with reduced levels of cp, available p (ap) and ca, supplemented with phytase and amino acids. the growth phases evaluated were: phase1, 1 - 21 days old, phase 2, 22 - 42 days old. a completely randomized design was used, with the treatments constituted of five nutritional plans (np), with six replicates of 25 birds each. the nutritional plans were: np1 - basal ration (21.4% cp - phase 1) + basal ration (19.3% cp - phase 2); np2 = basal ration (phase 1) + ration with 18% cp (phase 2); np3 = basal ration (phase 1) + ration with 16% cp (phase 2); np4 = ration with 19% cp (phase 1) + ration with 16% cp (phase 2) and np5 = ration with 17% cp (phase 1) + ration with 16% cp (phase 2). except for basal ration, it was reduced the level of ap for 0.34% and 0.30% in the phases 1 an 2, respectively, and ca to 0.80 and 0.70% in the phases 1 and 2, respectively , and in theses diets were added 500 ftu of phytase/ kg of ration. the np4 and np5 affected the bird performance. the bird fed np2 and np3 showed performance similar to those which was fed np1, while birds that were fed pn4 and pn5 remained unchanged. the carcass and breast yield were not influenced by the nutritional plans. the birds fed basal diets in the two rearing phases (np1) showed higher yield of thigh + drumstick. there was increase of the abdominal fat when the birds were fed np3, 4 and 5. in conclusion, is possible to reduce the protein of the ration up to 16% in the phase 2, supplemented with phytase and amino acids, since the ration of the phase 1 be formulated with recommended nutritional levels.
Teor de proteína no metabolismo do nitrogênio e da energia em suínos durante o crescimento
Oliveira, Vladimir de;Fialho, Elias Tadeu;Lima, José Augusto Freitas;Bertechini, Ant?nio Gilberto;Freitas, Rilke Tadeu Fonseca de;
Ciência e Agrotecnologia , 2005, DOI: 10.1590/S1413-70542005000400020
Abstract: an experiment was conducted in the department of animal science at the universidade federal de lavras (federal university of lavras) for evaluate the effects of protein levels in the nitrogen and energy balance. twenty crossbred barrows were housed individually metabolism cages and distributed in four treatments. treatments were isoenergetics and isolisinics diets formulated according ideal ratio of amino acids, but with different crude protein levels (16, 14, 12 and 10%). the pigs were fed three times energy required for maintenance, which was assumed to be 106 kcal of me/kg of metabolic body weight 0.75. the rations were adjusted each day on the basis of an estimated weight gain. the experiment was conducted in two consecutive periods of 12 days each. seven first days were used for adaptation of animals and the five last days was used total of feces and urine collection. ferric oxide was used as a marker. the experimental design was balanced changeover in two periods. the decrease of crude protein levels resulted in linearly reduction (p<0.001) of total nitrogen excretion. for each percent reduction in dietary cp, urine nitrogen excretion was reduced about 10.8%. nitrogen retention was decreased linearly (p>0.01) for those pigs fed diets with reduced protein. however, nitrogen efficiency utilization of intake nitrogen increased proportionally with decreased crude protein levels. the metabolization coefficients of energy diets showed similarity (p>0.05) values, but metabolizable :digestible energy ratio were inversely proportionally to the crude protein levels. in conclusion, the reduction of crude levels protein of rations decrease nitrogen retention, although result less nitrogen excretion and increase efficiency utilization of nitrogen intake.
Influência do tempo de coleta e metodologias sobre a digestibilidade e o valor energético de ra??es para aves
Rodrigues, Paulo Borges;Martinez, Ricardo de Souza;Freitas, Rilke Tadeu Fonseca de;Bertechini, Ant?nio Gilberto;Fialho, Elias Tadeu;
Revista Brasileira de Zootecnia , 2005, DOI: 10.1590/S1516-35982005000300021
Abstract: a digestibility assay were carried out to evaluate, in consecutives periods, the total excreta collection method and the chromium oxide method as a marker. apparent metabolizable energy corrected by nitrogen retention (amen) and aparent digestibility of dry matter coefficient (addmc) of broiler diet based in a ground corn and soybean meal containing 19% crude protein and 3.100 kcal me/kg. sixty adult leghorn cockerels weigh, in average, 2.350±105 g were used. each cockerel participates in the evaluation of the two methods simutannialy in consecutives periods. a split plots experimental design experiment was used to evaluate the two métodhs. in the chromium oxid method the treatments were defined as a 4x5 factorial arrangemente (chromium oxide levels 0.2, 0.4, 0.6 and 0.8% and collection time 1 to 5 days), totalizing 20 treatments in the plot, in two continuous periods (sub-plots), with three replicates by period. in the total excreta collection method the treatments were defined as five collection times (1 to 5 days) in the plot and the two continuous periods in the subplot with twelve replicates per period. the use of continuous periods did not affect amen or addmc. in the total excreta collection method the values of amen and addmc reached a plateau after two days of collection, showing that the collection time could be reduced by three days without affecting the determinated values. the data showed interaction between chromium oxide levels with collection times for the amen and addmc. three days of excreta collection were enough to determine with accuracy both amen and addmc of the diets based on ground corn and soybean meal. the use of three days of collection and 0.665% of chromium oxide in the diet was possible to determine similar values for amen and addmc in the two methods.
Efeito do processamento do milho sobre o desempenho e composi??o de carca?a de piaba (Leporinus friderici) criada em tanques-rede
Vieira, Jodnes Sobreira;Logato, Priscila Vieira Rosa;Ribeiro, Paula Adriane Perez;Freitas, Rilke Tadeu Fonseca de;Fialho, Elias Tadeu;
Ciência e Agrotecnologia , 2005, DOI: 10.1590/S1413-70542005000200025
Abstract: the experiment with the objective of verify the effects of the processing (extrusion, rolling and pelleting of corn) on the performance and composition of the piaba (leporinus frederici) carcass, was conducted in the usina hidreletrica da companhia energética de minas gerais - cemig (minas gerais hydroelectric station), in the itutinga- mg , with the lenght of 45 days. the experiment was undertaken in 24 cages of 1m3, 480 fingerlings were utilized, they were distributed into blocks. the four experimental rations were formulated based in corn meal, extruded corn, rolled corn and pelleted corn. the data obtained were submitted to the analysis of variance and the comparison of means of the treatments by the scott & knott test. the results showed any statistical difference in the performance parameters. however, the use of extruded corn and corn meal increased protein content (p<0.05) and decreased fat content (p<0.05) of the carcass traits, these results showed, improved protein utilization for structural purposes. in conclusion the corn processing did not improve the performance of the fish and that corn meal and extruded corn increased protein content and reduced fat content in the carcass.
Valores energéticos de sojas integrais e de farelos de soja, determinados com galos adultos e por equa??es de predi??o
Ost, Paulo Roberto;Rodrigues, Paulo Borges;Fialho, Elias Tadeu;Freitas, Rilke Tadeu Fonseca de;Bertechini, Antonio Gilberto;
Ciência e Agrotecnologia , 2005, DOI: 10.1590/S1413-70542005000200027
Abstract: a metabolism trial was conducted with the objective to determine the values of apparent metabolizable (ema), corrected apparent (eman), true (emv) and corrected true energy (emvn) of toasted whole soybean, micronized whole soybean and five brands of soybean meal through the forced feeding method with adult roosters and afterwards, from the experimental results obtained, it was also validate equations to predict emvn as related with chemical composition of the feeds. the forced feeding method was utilized, by using 24 adult leghorn roosters with means 2.35 ± 165 g. the rooster was considered as an experimental unit and each feed was given to 6 roosters (6 replicates), two replicates in each time. simultaneously, 6 roosters were kept in fasting for determination of the endogenous and metabolic losses. before the experimental period, each rooster was maintained without any feed for 24 hours for emptying of the digestive tract and then forced to ingest 30 grams of the test feed. for that reason, four collections of excreta were done every 12 hours, to avoid fermentation. at the end of this period, the feeds and also the excreta were homogenized for analysis of dry matter, nitrogen and gross energy and then calculated the values of energy. the values of emvn calculated were then contrasted with values of emvn estimated from the prediction equations presented in the national literature for groups of feeds similar to those of the present work. the values of emvn of the soybean meals ranged from 2531 to 2730 kcal/kg of dm and those of toasted and micronized whole soybean were 3732 and 4027 kcal/kg of dm, respectively. for the whole soybeans and soybean meals, the equation which best estimated the values of energy were tmen = 2690.62 - 40.87adf + 19.96ndf + 63.09ee. in general, the equations tested in the present work shown not good estimates of the values of emvn, so, they are not adequate to be utilized as a predictor of energetics values in practice.
Coeficiente de digestibilidade aparente de cinco fontes energéticas para o jacaré-do-pantanal (Caiman yacare, Daudin, 1802)
Maciel, Fernando Rodrigues;Logato, Priscila Vieira Rosa;Fialho, Elias Tadeu;Freitas, Rilke Tadeu Fonseca de;Victor Manuel, Alexio;
Ciência e Agrotecnologia , 2003, DOI: 10.1590/S1413-70542003000300024
Abstract: a metabolism trial was carried out at the facilities of the cooperative of growers of the "jacaré do pantanal" , in cáceres - mt, with the objective of evaluating the nutritional value of five energetic feedstuffs for the "jacaré-do-pantanal" (caiman yacare). a completely randomized design with five treatments and three replicates was utilized, the experimental unit being constituted of three caimans, with a total mean weight of 3940 ± 240 g, average environmental temperature of 30.5 ± 5.0oc and average temperature of the water of 27.8 ± 1.0oc. the amount of feed furnished per replicate every two days was standardized in 20 g of dry matter per unit of metabolic weight (kg0.75). the means of the coefficients of apparent digestibility were compared through tukey’s test (p<0,05). the coefficient of apparent digestibility of dry matter was of 80.78; 68.08; 69.91; 30.12 and 58.95 and the coefficient of apparent digestibility of gross energy (cadge) was of 82.59; 60.58; 61.66; 25.17 and 48.57 for glucose, dextrin, cornstarch, ground corn and pectin, respectively. glucose showed the highest cadge value and corn the lowest (p<0,05).
Energia metabolizável de alguns alimentos energéticos para frangos de corte, determinada por ensaios metabólicos e por equa??es de predi??o
Nagata, Adriano Kaneo;Rodrigues, Paulo Borges;Freitas, Rilke Tadeu Fonseca de;Bertechini, Ant?nio Gilberto;Fialho, Elias Tadeu;
Ciência e Agrotecnologia , 2004, DOI: 10.1590/S1413-70542004000300025
Abstract: two metabolism assays were carried out with chicks in growth (traditional method of total collection of excreta) in the animal science department of ufla, lavras - mg, to determinate of the nitrogen-corrected apparent metabolizable energy (amen) of some feedstuffs, as well as the determination of the energy values by prediction equations presented in the national and international literature. in the assay i, it was determined amen of some energy alternative feedstuffs to the corn (corn germ, corn quirera, ground and grain millet and ground and grain sorghum) and, in the second, amen of the seven corn hybrids. at same time to the experiments, it were realized laboratory analyses for determination centesimal composition of the tested feedstuffs. the food composition it was used in the prediction amen by equations. the calculated values were, then, compared with observed, using the spearman correlation and scott-knott test. in addition, confidence intervals were obtained by the metabolic assays. ground millet amen was similar to amen grain millet (3223 and 3279 kcal/kg dm respectively), being the same observed for the sorghum (3529 and 3573 kcal/kg dm, ground and grain, respectively). the amen for the corn germ was 3503 kcal/kg dm, while, for the corn quirera, it was 3351 kcal/kg dm. the corn hybrids energy values varied from 3665 to 3804 kcal/kg dm. among the studied equations, the 4021.8 - 227.55ash equation only correlated (p<0,01) with amen mean value observed in vivo, estimating the largest number of energy values inside of calculated confidence intervals. the other equations were not correlated (p<0,01) with the amen values. the results obtained in this assays, allow concluded that the 4021.8 - 227.55ash equation should be used to predict eman values of the studied feedstuffs.
Effect of the ration processing on the apparent digestibility values of nutrients for the piau (Leporinus elongatus)
Logato, Priscila Vieira Rosa;Albernaz, Norka da Silva;Ribeiro, Paula Adriane Perez;Freitas, Rilke Tadeu Fonseca de;Fialho, Elias Tadeu;
Ciência e Agrotecnologia , 2009, DOI: 10.1590/S1413-70542009000300032
Abstract: the experiment carried out at national center for research in tropical fish pirassununga, sp, aiming to determine the effect of the ration processing on the apparent digestibility coefficients of the ingredients for the piau (l. elongatus). a total of 600 males of piau were utilized, allotted into six ponds of 300l. the applied treatments were: grinder processed ration, pelleting ration and extruded ration, utilizing rations with 32% crude protein and 3400 kcal de.kg-1. the experiment was in a randomized blocks design with three treatments, three blocks and two replicates. the data were submitted to variance analysis by the saeg computational package and the means of the treatments compared by snk test (5% of significance). the results showed that there were significant differences among the digestibility coefficients of both protein and energy for the pelleted and extrused rations (p<0.05). the results showed no statistical differences for the apparent digestibility coefficient of the dry matter (p>0.05).
Desempenho e excre??o de nitrogênio de leit?es dos 9 aos 25 kg alimentados com dietas com diferentes níveis de lisina digestível e proteína bruta
Zangeronimo, Márcio Gilberto;Fialho, Elias Tadeu;Murgas, Luis David Solis;Freitas, Rilke Tadeu Fonseca de;Rodrigues, Paulo Borges;
Revista Brasileira de Zootecnia , 2007, DOI: 10.1590/S1516-35982007000600022
Abstract: two experiments were conducted to evaluate dietary levels of crude protein (cp) and digestible lysine (lysd) on the performance and nitrogen (n) excretion of piglets in the initial phase. in experiment 1, 80 barrows and females (initial weight of the 9.1 kg ± 1.2 kg and final weight of the 21.5 ± 4.8 kg), crossbred (landrace x large white), were distributed to a randomized blocks in factorial scheme 2 x 4 (two levels of cp 16 and 18% - and four levels of lysd (0.7; 0.9; 1.1 and 1.3%) with five replications and two animals per experimental unit, during 35 days. the average daily weight gain (adg), average daily feed intake (adfi) and feed:gain ratio (f:g) were evaluated. in experiment 2, 32 barrows (25.0 ± 1.3 kg), from experiment i, were individually allotted in metabolic cages (experimental unit), during 11 days, to evaluate the ingested n, n in feces and n in urine . the diets were formulated with corn, soybean meal and modified powder milk, supplemented with vitamins and minerals. the amino acids methionine and threonine were corrected in function of the lysine levels, following the ideal protein concept. no interaction lysd x cp was observed for neither studied variable. average daily gain and f:g showed a quadratic effect for the lysd levels and were better in the animals fed diets with levels of 1.04 and 1.09%, respectively. the levels of n in the fezes showed crescent linear effect with the lysd and cp levels, while the n levels in the urine showed quadratic effect with lysd levels, with lower excretion for the level of 1.03% in the ration. no influence was observed for lysd and cp level on adfi and n in fezes. the level of 1.05% lysd in diets with 16 and 18% cp provide best performance and lower excretion of de n in dejects of the swine.
Níveis de proteína e fósforo em ra??es com fitase para frangos de corte, na fase de 14 a 21 dias de idade: 2. valores energéticos e digestibilidade de nutrientes
Silva, Yolanda Lopes da;Rodrigues, Paulo Borges;Freitas, Rilke Tadeu Fonseca de;Zangeronimo, Márcio Gilberto;Fialho, Elias Tadeu;
Revista Brasileira de Zootecnia , 2008, DOI: 10.1590/S1516-35982008000300012
Abstract: a digestibility assay was carried out to determine the apparent metabolizable energy values (amen), dry matter digestibility coefficients (dmdc), the excretion and apparent retention coefficient of phosphorus (p), nitrogen (n), calcium (ca), potassium (k), copper (cu) and zinc (zn), using 250 cobb male broiler chickens receiving the treatments distributed in a factorial schedule 3 ′ 3 + 1 (available phosphorus level - 0.25; 0.34 and 0.45% and crude protein level [cp]- 15.0; 17.0 and 19.0% and a control diet, with normal nutritional levels), with five replicates of five birds each. in the diets with reduced levels of available phosphorus (ap), 500 ftu of phytase were added and calcium requirement was reduced in 17%. except for control treatment, all the diets were formulated on digestible amino acids basis. the energetic values of the diets with 15.0 and 17.0% cp, independently of the ap levels used or the phytase supplementation, presented higher amen that the control diet possibility regarding to supplemental amino acids addition. the dmdc of the diets with reduced cp levels and different levels of ap were higher than the control diet. the cp reduction in the diet associated to lower ap levels and phytase enzyme supplementation allowed to reduce the minerals excretion, which showed better retention coefficients, except for zinc that presented lower retention coefficient than the the control diet. however, all minerals excretion, as relatively compared to the control diet, was minimized when lower levels of cp and ap was used in the diet, supplemented with phytase. the manipulation of the protein and phosphorus levels in diets supplemented with amino acids and phytase could reduce mainly the excretion of nitrogen, p and cu, minimizing the environment pollution caused by these elements.
Page 1 /178046
Display every page Item

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