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	Provedor de dados BJM (4) Rev. Bras. Ciênc. Avic. (4) R. Bras. Zootec. (3) Ciência Rural (2) Rev. Bras. Ciênc. Solo (2) Colegio de Postgraduados (1) Anais da ABC (AABC) (1) Scientia Agricola (1) Ciência e Agrotecnologia (1) Mais... Autor Bertechini,Antônio Gilberto (3) Naves,Luciana de Paula (3) Rodrigues,Paulo Borges (3) Alvarenga,Renata Ribeiro (2) Gomide,Elisangela Minati (2) Greiner,Ralf (2) Santos,Luziane Moreira dos (2) AZEVEDO,RICARDO A. (1) Abreu,CG (1) Abreu,Celeste Maria Patto de (1) Albuquerque,Ricardo de (1) Araújo,CS da S (1) Araújo,LF (1) Baolin,G (1) Barbosa,LCGS (1) Bardiya-Bhurat,Khushboo (1) Barreto,Sergio Luiz de Toledo (1) Bedford,MR (1) Bender,Marcos Antonio (1) Bernardino,Verônica Maria Pereira (1) Mais... Palavra-chave Phytate (19) Enzyme (7) Phytase (5) Phosphorus (4) Phytic acid (4) Bone ash (3) Performance (3) Aspergillus niger (2) Broiler (2) Metabolism (2) Nutrition (2) 18S rRNA gene (1) Amino acids (1) Aspergillus (1) Aspergillus oryzae (1) Available phosphorus (1) Aviculture (1) Bacterial phytase (1) Biotechnological application (1) Borregos (1) Mais... Tipo do documento Info:eu-repo/semantics/article (18) Ano 2020 (1) 2018 (2) 2015 (1) 2014 (3) 2013 (3) 2012 (2) 2011 (4) 2009 (1) 2004 (1) 2003 (1) Mais... País Brazil (18) Mexico (1) Idioma Inglês (18) Espanhol (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 19 Primeira ... 1 ... Última Activity of fungal phytases stored in two ways in response to the period of storage at room temperature Ciência Rural Naves,Luciana de Paula; Corrêa,Angelita Duarte; Bertechini,Antônio Gilberto; Gomide,Elisangela Minati; Abreu,Celeste Maria Patto de. Two distinct experiments were conducted simultaneously with phytases of Aspergillus oryzae and A. niger for determining enzyme activity in response to storage period (up to 180 days at room temperature - RT). In the first experiment, enzymes were stored as they were acquired (pure form) and the activity was measured periodically during 180 days of storage at RT. In the second experiment, the phytases were incorporated to a supplement containing vitamins, minerals, and amino acids; and then this supplement was stored at RT up to 180 days, so that every 30 days of storage was collected one aliquot from each replicate for determining enzymatic activity. In conclusion, the phytase activity is affected by storage duration. To ensure 80% of the initial activity,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Aspergillus niger; Aspergillus oryzae; Enzyme; Phytate; Phytic acid. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782012000100029 Animal manure phosphorus characterization by sequential chemical fractionation, release kinetics and 31P-NMR analysis Rev. Bras. Ciênc. Solo Tiecher,Tales; Zafar,Mohsin; Mallmann,Fábio Joel Kochem; Bortoluzzi,Edson Campanhola; Bender,Marcos Antonio; Ciotti,Lucas Henrique; Santos,Danilo Rheinheimer dos. Phosphate release kinetics from manures are of global interest because sustainable plant nutrition with phosphate will be a major concern in the future. Although information on the bioavailability and chemical composition of P present in manure used as fertilizer are important to understand its dynamics in the soil, such studies are still scarce. Therefore, P extraction was evaluated in this study by sequential chemical fractionation, desorption with anion-cation exchange resin and 31P nuclear magnetic resonance (31P-NMR) spectroscopy to assess the P forms in three different dry manure types (i.e. poultry, cattle and swine manure). All three methods showed that the P forms in poultry, cattle and swine dry manures are mostly inorganic and highly... Tipo: Info:eu-repo/semantics/article Palavras-chave: Organic amend; Phosphorus bioavailability; Phytate; Phosphorus fractionation. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000500016 Bacterial phytase: potential application, in vivo function and regulation of its synthesis BJM Konietzny,Ursula; Greiner,Ralf. The stepwise release of phosphate from phytate, the major storage form of phosphate in plant seeds and pollen, is initiated by a class of enzymes that have been collectively called phytases. The classification is solely due to the in vitro capability of these enzymes to accept phytate as a substrate. Phytases have been studied intensively in recent years because of the great interest in such enzymes for reducing phytate content in animal feed and food for human consumption. They have a wide distribution in plants, microorganisms, and in some animal tissues. Due to several biological characteristics, such as substrate specificity, resistance to proteolysis and catalytic efficiency, bacterial phytases have considerable potential in commercial applications.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacterial phytase; Biotechnological application; Dephosphorylation; Occurrence; Phytase formation; Phytate. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822004000100002 Bioavailability and poultry fecal excretion of phosphorus from soybean-based diets supplemented with phytase R. Bras. Zootec. Martins,Bianca Almeida Brandão; Borgatti,Laura Maria de Oliveira; Souza,Luiz Waldemar de Oliveira; Robassini,Simi Luiza Durante Aflalo; Albuquerque,Ricardo de. Five hundred and four 1-day-old Cobb broiler chickens were randomly allotted to 18 treatments and fed a semi-purified basal diet (4 g/kg total phosphorus) supplemented with 2 levels of supplemental P (0.5 or 1 g/kg) during 21 days to evaluate performance and bone mineralization; to assess the relative bioavailability of P (RBP) in wheat meal (WM) and roasted (RS) or extruded soybean meal (ES), with or without phytase (0 or 750 ftu/kg diet), using dicalcium phosphate (DC) as standard; and to estimate phosphorus excretion. Weight gain (WG), feed intake (FI), feed to gain ratio (FG), and tibia ash weigh (AW) were assessed. For each source, the RBP was calculated by the slope ratio method, when tibia ash weight was regressed on P ingested. Ingested and fecal P... Tipo: Info:eu-repo/semantics/article Palavras-chave: Available phosphorus; Bone ash; Broiler; Phosphorus excretion; Phytate; Wheat meal. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000300005 Chromobacterium sp. from the tropics: detection and diversity of phytase activity BJM Costa,Patrícia S; Nascimento,Andréa M.A; Lima-Bittencourt,Cláudia I; Chartone-Souza,Edmar; Santos,Fabrício R; Vilas-Boas,Adlane. Phytases are a group of enzymes that catalyze phytic acid hydrolysis with release of phosphorus (P). The ability of Chromobacterium sp. to produce phytase was detected in 115 out of 118 candidate bacteria isolated from different Brazilian biomas. This is the first report revealing the genus Chromobacterium as phytase producer. Tipo: Info:eu-repo/semantics/article Palavras-chave: Chromobacterium sp; Diversity; Phytase; Phytate; Tropical bacteria. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000100011 Dietary phytase levels on performance and egg quality of Japanese quails R. Bras. Zootec. Lima,Heder José D'Avila; Barreto,Sergio Luiz de Toledo; Donzele,Juarez Lopes; Valeriano,Matheus Henrique; Vieira,Patrícia Aparecida Fontes; Costa,Carlos Henrique Rocha. The experiment was conducted to evaluate the addition of phytase on productive performance and egg quality of Japanese quails fed diets containing different levels of phytase. It was used 320 Japanese quails at 167 days of age, weighing 182.3 ± 3.8 g distributed in a completely randomized design with four experimental diets and eight repetitions of ten birds per experimental unit. Diets were formulated from a basal diet (control) and they were corn and soybean meal based, without supplementation, added with 200, 400 or 600 phytase activity unit (ftu). Supplementation of phytase in the diets improved productive performance and quality of eggs. Efficiency of phosphorus use for egg mass, from 0.13% of availability of this mineral in the ration, improved with... Tipo: Info:eu-repo/semantics/article Palavras-chave: Coturnix coturnix japonica; Enzyme; Nutritional profile; Phosphorus; Phytate. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000100018 Effect of ph and temperature on the activity of phytase products used in broiler nutrition Rev. Bras. Ciênc. Avic. Naves,L de P; Corrêa,AD; Bertechini,AG; Gomide,EM; Santos,CD dos. The activity of three commercial microbial phytase (Aspergillus oryzae, A. niger, and Saccharomyces cerevisae) products used in broiler nutrition was determined at different pH (2.0 to 9.0) and temperature (20 to 90°C) values. Enzymatic activity was determined according to the reaction of the phytase with its substrate (sodium phytate), in four replicates, and was expressed in units of phytase activity (FTU). A. oryzae phytase exhibited optimal activity at pH 4.0 and 40°C, but its absolute activity was the lowest of the three phytases evaluated. A. niger phytase exhibited maximal activity close to pH 5.0 and 45ºC, whereas S. cerevisae phytase presented its highest activity at pH close to 4.5 and temperatures ranging between 50 and 60°C. It was concluded... Tipo: Info:eu-repo/semantics/article Palavras-chave: Enzymatic activity; Enzyme; Phytate; Phytic acid. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000300004 Growth, Yield and Grain Nutritional Quality in Three Brazilian Pearl Millets (Pennisetum americanum L.) with African or Indian origins Anais da ABC (AABC) MEDICI,LEONARDO O.; GONÇALVES,FABÍOLA V.; FONSECA,MARCOS PAULO S. DA; GAZIOLA,SALETE A.; SCHMIDT,DAIANA; AZEVEDO,RICARDO A.; PIMENTEL,CARLOS. ABSTRACT In this study, we are presenting recommendations to the best agricultural use as well as for plant breeding of three millet cultivars namely ENA1 and ENA2, which have African origin, and BRS1501 originally from India. These cultivars were evaluated for growth, yield and grain quality traits. The morphological traits evaluated in this study indicated that the African genotypes ENA1 and ENA2 are better than the Indian genotype BRS1501 for no-till farming or to produce forage with 15% of crude protein at flowering and at harvest to produce stover (around 7% of crude protein content) for livestock feeding. The BRS1501 cultivar exhibited the highest values for total crude protein, albumins and prolamins, phytate and mineral contents in grains. ENA1 and... Tipo: Info:eu-repo/semantics/article Palavras-chave: Mineral density; SDS-PAGE; Phytate; Seed storage proteins; Amino acids. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000401749 Heat-resistant bacterial phytase in broiler pelleted diets Rev. Bras. Ciênc. Avic. Carlos,TC de F; Barbosa,LCGS; Shiroma,NN; Dari,RL; Baolin,G; Yongcheng,W; Araújo,CS da S; Araújo,LF. The objective of the study was to evaluate the effects of a heat-resistant bacterial phytase added to pelleted diets on mineral digestibility, live performance, carcass traits, and bone quality of broilers. Three treatments were evaluated: Positive control; negative control, with 0.10 points reduction in calcium level and 0.15 points reduction in available phosphorus level; and negative control + phytase at 500 FTU/kg. Mineral digestibility and bone quality results demonstrated that the evaluated phytase resisted pelleting as it increased the utilization of the minerals present in the diet. Tipo: Info:eu-repo/semantics/article Palavras-chave: Performance; Digestibility; Enzyme; Phytate; Phosphorus; Broiler nutrition. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000100045 Increasing levels of phytase in diets formulated with reduced available phosphorus content supplied to male and female broilers Ciência Rural Naves,Luciana de Paula; Rodrigues,Paulo Borges; Teixeira,Levy do Vale; Bertechini,Antônio Gilberto; Alvarenga,Renata Ribeiro; Bernardino,Verônica Maria Pereira; Santos,Luziane Moreira dos; Natividade,Yuri Pereira Efrem. The reduction of the available phosphorus (avP) content in the broiler diet must be followed by the supplementation of adequate phytase. One experiment was conducted with broilers from 15 to 28 days of age to determine the level of necessary phytase when the mashed diet is formulated with 0.213% of avP to enable the results of performance, tibia ash content, and calcium (Ca) utilization similar to those determined for birds fed with diet formulated to meet their nutritional requirements. Thus, 120 broilers were distributed in (4+1) x2 factorial arrangement corresponding to four deficient diets in avP (0.213%) supplemented with phytase (0; 750; 1,500 or 2,250FTU kg-1) plus one positive control diet without phytase (0.426% of avP), supplied to male and... Tipo: Info:eu-repo/semantics/article Palavras-chave: Aviculture; Bone ash; Enzyme; Metabolism; Performance; Phytate. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000801479 Influence of dietary non-phytate phosphorous levels and phytase supplementation on the performance and bone characteristics of broilers Rev. Bras. Ciênc. Avic. Karimi,A; Bedford,MR; Sadeghi,Gh; Ghobadi,Z. Precise phosphorus nutrition is important for significant reductions in both P pollution and ration costs. The influence of different levels (%) of dietary nPP fed from 0 to 20 d (0.45, 0.40, 0.35, 0.30, 0.25, compared with feeding 0.20 nPP with and without 500 F.T.U. of phytase per kg of diet) and from 21 to 36 d of age (0.414, 0.364, 0.314, 0.264, 0.214, compared with 0.164 nPP with and without 500 F.T.U. of phytase per kg of diet) were evaluate using a total of 588 day-old commercial broiler chicks. Each treatment was replicated four times in a completely randomized design. Body weight (BW), daily gain (DG), feed intake (DFI), feed conversion ratio, plasma P level and bone characteristics were determined, and from these data the P equivalency of the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Bone ash; Broiler; Phosphorous; Phytate; Phytase. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000100007 Isolation, morphological and molecular characterization of phytate-hydrolysing fungi by 18S rDNA sequence analysis BJM Gontia-Mishra,Iti; Deshmukh,Dhanshree; Tripathi,Niraj; Bardiya-Bhurat,Khushboo; Tantwai,Keerti; Tiwari,Sharad. Phytate is the primary storage form of phosphate in plants. Monogastric animals like poultry, pigs and fishes have very low or no phytase activities in their digestive tracts therefore, are incapable to efficiently utilize phytate phosphorus from the feed. Phytase from microbial sources are supplemented to feedstuff of these to increase the uptake of phytate phosphorus. In the present work efforts were made to isolate and characterize proficient phytase producing fungi from soil. Phytase producing fungi were isolated using phytate specific medium. Fungal isolates were selected according to their higher phytase activities. These isolates were further characterized and identified by morphological and microscopic analysis and confirmed by amplification of 18S... Tipo: Info:eu-repo/semantics/article Palavras-chave: Phytase; Phytate; Fungi; 18S rRNA gene; Aspergillus. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100046 Modificación de variables de la degradacióny fermentación in vitro E in situ de una dieta con una fitasa exógena para borregos en crecimiento. Colegio de Postgraduados Vallejo Hernández, Laura Haydée. Tres dosis de enzima fitasa Ronozyme-HiPhosÒ (DSM Nutritional Products 5000 FTU g-1) (0, 540 y 720 g fitasa t-1) se evaluaron en un dieta concentrada (70% sorgo y 16.9% gluten de maíz), para determinar si la inclusión de la enzima modifica las variables de degradación y fermentación de la dieta. Muestras de dietas fueron incubadas durante 3, 6, 9, 12, 24 y 48 h, para identificar cambios en degradación in vitro de materia seca (DIVMS), pH, nitrógeno amoniacal (N-NH3), fósforo (P) en medio de incubación, producción de gas y ácidos grasos volátiles (AGV); el diseño experimental fue de bloques al azar generalizados. Además se realizó una prueba in situ, en la cual se utilizaron 6 borregos criollos (40 ± 2 kg PV) con cánula en rumen y duodeno, para determinar... Palavras-chave: Fitasa; Fitato; Fósforo; Borregos; Phytase; Phytate; Phosphorus; Lambs; Ganadería; Maestría. Ano: 2014 URL: http://hdl.handle.net/10521/2224 Nitrogen, calcium and phosphorus balance of broilers fed diets with phytase and crystalline amino acids Ciência e Agrotecnologia Gomide,Elisangela Minati; Rodrigues,Paulo Borges; Zangeronimo,Márcio Gilberto; Bertechini,Antônio Gilberto; Santos,Luziane Moreira dos; Alvarenga,Renata Ribeiro. The objective of this study was to evaluate the effect of reduced-crude protein (CP) and available phosphorus (aP) diets, added with phytase and amino acids for broilers in the growing (14 to 21 days old) and retirement (35 to 42 days) phases on nitrogen, potassium and phosphorus balance. Ninety Cobb broilers were distributed in a completely randomized design with three treatments and six replications with five and three birds per experimental unit in the growing and retirement phases, respectively. Diets were elaborated to contain reduced CP and aP levels (19 and 17% CP in the growing phase, with 0.34% aP; and 18 and 16% CP in the retirement phase, with 0.30% aP), supplemented with crystalline amino acids and 500 FTU of phytase/kg diet. These were... Tipo: Info:eu-repo/semantics/article Palavras-chave: Enzyme; Phytate; Environment; Metabolism. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542011000300022 Phytase enzyme in diets containing defatted rice bran for growing swine Scientia Agricola Moreira,José Aparecido; Vitti,Dorinha Miriam Silber Schmidt; Trindade Neto,Messias Alves da; Lopes,João Batista. Organic phosphorus is poorly utilized by monogastric animals because they lack phytase, the enzyme that cleaves the ortho-phosphate groups from the phytate molecule. Diets fed to pigs are supplemented with inorganic P, and this can increase environmental pollution and diet costs. Sixty mixed sex, half-breed pigs, were used to evaluate the effect of increasing dietary levels of phytase (253, 759, 1265 and 1748 PU kg-1 feed) on animal performance as compared to a control without phytase but supplemented with dicalcium phosphate. Enzyme levels did not affect daily feed intake, food conversion, average daily weight gain, plasma P and Ca, calcium and phosphorus in bone ash, and the calcium/phosphorus ratio in the plasma and bones. A quadratic relationship... Tipo: Info:eu-repo/semantics/article Palavras-chave: Environmental pollution; Nutrition; Performance; Phosphorus; Phytate. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400004 Phytase Superdosing in the Diet of Lightweight Replacement Pullets: Performance, Organ Biometry and Bone Characteristics Rev. Bras. Ciênc. Avic. Sena,TL; Leite,SCB; Farias,MRS; Abreu,CG; Freitas,ER; Costa,AC. ABSTRACT The aim of this study was to evaluate the effect of two types of phytases (the 1st produced from Escherichia coli and the 2nd from Aspergillus oryzae) with different dosages (300 and 900 Unit Phytase or FTU) on performance, organ biometry and bone quality of replacement pullets in the period of 8 to 17 weeks of age. A total of 288 Hy-Line White laying hens were used at 8 weeks of age. A completely randomized design was adopted in a 2 x 2 factorial scheme, totaling 4 treatments with 8 replicates of 9 birds each. Performance, biometric variables and bone characteristics were evaluated. There was no significant interaction between the factors for any of the evaluated variables. The conversion and the accumulated consumption were influenced... Tipo: Info:eu-repo/semantics/article Palavras-chave: Myo-inositol; Phytate; Phytic acid. Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000400306 Purification and characterisation of an extracellular phytase from Aspergillus niger 11T53A9 BJM Greiner,Ralf; Silva,Lucineia Gomes da; Couri,Sonia. An extracellular phytase from Aspergillus niger 11T53A9 was purified about 51-fold to apparent homogeneity with a recovery of 20.3% referred to the phytase activity in the crude extract. Purification was achieved by ammonium sulphate precipitation, ion chromataography and gel filtration. The purified enzyme behaved as a monomeric protein with a molecular mass of about 85 kDa and exhibited maximal phytate-degrading activity at pH 5.0. Optimum temperature for the degradation of phytate was 55°C. The kinetic parameters for the hydrolysis of sodium phytate were determined to be K M = 54 µmol l-1 and k cat = 190 sec-1 at pH 5.0 and 37°C. The purified enzyme was rather specific for phytate dephosphorylation. It was shown that the phytase preferably... Tipo: Info:eu-repo/semantics/article Palavras-chave: Aspergillus niger; Phytate-degrading enzyme; Phytate; Phytase. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000400010 Spectroscopic quantification of soil phosphorus forms by 31p-nmr after nine years of organic or mineral fertilization Rev. Bras. Ciênc. Solo Gatiboni,Luciano Colpo; Brunetto,Gustavo; Rheinheimer,Danilo dos Santos; Kaminski,João; Pandolfo,Carla Maria; Veiga,Milton; Flores,Alex Fabiani Claro; Lima,Maria Angélica Silveira; Girotto,Eduardo; Copetti,André Carlos Cruz. Long-standing applications of mineral fertilizers or types of organic wastes such as manure can cause phosphorus (P) accumulation and changes in the accumulated P forms in the soil. The objective of this research was to evaluate the forms of P accumulated in soils treated with mineral fertilizer or different types of manure in a long-term experiment. Soil was sampled from the 0-5 cm layer of plots fertilized with five different nutrient sources for nine years: 1) control without fertilizer; 2) mineral fertilizer at recommended rates for local conditions; 3) 5 t ha-1 year-1 of moist poultry litter; 4) 60 m³ ha-1 year-1 of liquid cattle manure and 5) 40 m³ ha-1 year-1 of liquid swine manure. The 31P-NMR spectra of soil extracts detected the following P... Tipo: Info:eu-repo/semantics/article Palavras-chave: Glycerophosphate; Manure; Phytate; Organic phosphorus; Organic fertilization. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000300010 Supplementation of fungal and/or bacterial phytase in broiler diets formulated with reduced phosphorus level and different calcium contents R. Bras. Zootec. Nardelli,Nicole Batelli de Souza; Naves,Luciana de Paula; Oliveira,David Henrique de; Garcia Junior,Antonio Amandio Pinto; Lima,Eduardo Machado Costa; Oliveira,Evelyn Cristina de; Rodrigues,Paulo Borges. ABSTRACT The objective of the current study was to evaluate the effects of three calcium:available phosphorus (Ca:aP) ratios and different supplementation with phytases from different origins on performance and ash, Ca, and P contents in the tibia of broilers. A total of 900 male broilers (22 to 35 days old) were fed ten dietary treatments in a completely randomized design. A 3 × 3 + 1 factorial scheme was used, corresponding to three Ca:aP ratios (4.5:1.0, 6.0:1.0, and 7.5:1.0) and three different supplementations with phytases from different origins (isolated or combined supplementation with bacterial and fungal phytase), plus a control diet. Regardless of the dietary Ca:aP ratio, the isolated use of bacterial phytase provided better feed conversion than... Tipo: Info:eu-repo/semantics/article Palavras-chave: Enzyme; Nutrition; Phytate; Phytic acid. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100535 Registros recuperados: 19 Primeira ... 1 ... Última

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