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Search Results: 1 - 10 of 38754 matches for " Paulo Roberto;Rostagno "
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Exigência nutricional de treonina digestível para galinhas poedeiras no período de 34 a 50 semanas de idade
, Luciano Moraes;Gomes, Paulo Cezar;Cecon, Paulo Roberto;Rostagno, Horacio Santiago;D'Agostini, Priscila;
Revista Brasileira de Zootecnia , 2007, DOI: 10.1590/S1516-35982007000800018
Abstract: with the objective to establish the nutritional requirement of threonine for light and semi-heavy laying hens in the period from 34 to 50 weeks old, 580 laying hens (half lohmann and half lohmann brown) submitted to a basal ration containing 2.850 kcal me/kg, 14.0% cp, supplemented of five levels (0.00, 0.035, 0.07, 0.105, and 0.140%) of l-threonine, in order to provide 0.410, 0.445, 0.480, 0.515, and 0.550% of digestible threonine in the rations. a 5 x 2 (threonine level and laying hen strain) factorial arrangement, with six replications per treatment and six hens per experimental unit in a completely randomized design was used. egg production (%), egg mass and average egg weight (g), feed intake (g/hen.day), feed conversion (kg feed/egg dozen), body weight change (g) and internal egg quality (haugh units, albumen and yolk index) were evaluated. the threonine levels did not affect the body weight change, feed intake, egg weight and internal egg quality in both laying hen strains. feed conversion, egg production, egg mass and haugh units were positive influenced by the threonine level. the digestible threonine requirement, estimated by the quadratic model, for the light and the semi-heavy laying hens, was 0.510 and 0.517% in the diet, corresponding to the daily intake per hen of 583 and 575 mg lysine/day, respectively.
Exigências de manganês para frangos de corte nas fases de crescimento e termina??o
Cupertino, Edwiney Sebasti?o;Gomes, Paulo Cezar;Albino, Luiz Fernando Teixeira;Rostagno, Horacio Santiago;Cecon, Paulo Roberto;Schimidt, Marlene;
Revista Brasileira de Zootecnia , 2005, DOI: 10.1590/S1516-35982005000700017
Abstract: four hundred and eighty broilers were assigned to a completely randomized design with a 6x2 arrangement (six levels of manganese and 2 sexes - male and female) and four replicates to determine the manganese requirements in the growing (22 to 42 days) and finishing (43 to 54 days) phases. six and four birds per experimental unit, respectively, were used in the first and second trials. in both trials, the treatments consisted of a basal diet deficient in manganese (6.5 ppm) or supplemented with manganese (0, 30, 60, 90, 120, and 150 ppm) from the commercial sulfate. the following variables were analyzed: weight gain, feed intake, feed conversion, tibia length, resistance of bone to breaking, and manganese concentration in the liver and bone. the levels of manganese influenced the manganese concentration in the liver and bone in the growing phase and the manganese concentration in the liver in the finishing phase. the manganese requirements were estimated by the polynomial regression models and lrp (linear response plaeau). the manganese requirement was estimated in 90 ppm for male and female broilers in the growing phase. in the finishing phase, the levels from 30 to 40 ppm of manganese is recommended to obtain good results of performance for birds fed corn and soybean meal-based diets.
Níveis nutricionais de cobre para frangos de corte machos e fêmeas nas fases de crescimento e termina??o
Schmidt, Marlene;Gomes, Paulo Cezar;Albino, Luiz Fernando Teixeira;Rostagno, Horacio Santiago;Cecon, Paulo Roberto;Cupertino, Edwiney Sebasti?o;
Revista Brasileira de Zootecnia , 2005, DOI: 10.1590/S1516-35982005000300022
Abstract: two experiments, with 288 and 196 birds, half males and half females, respectively, were carried out to determine the copper (cu) requirements for broilers in the growing (from 22 to 42 days) and finishing (from 43 to 54 days) phases. two basal diets were formulated to meet the bird nutritional requirements, except for cu, that was deficient at the levels of 1.40 and 1.33 ppm, respectively. the treatments of both experiments consisted of the cu supplementation levels, from cu sulfate, resulting in a total of 1.40, 4.90, 8.40, 11.90, 15.40 and 18.90 ppm cu in the diet for the growing of phase and 1.33, 4.83, 8.33, 11.83, 15.33 and 18.33 ppm cu in the finishing phase. average weight gain, feed intake, feed:gain ratio and cu concentration in the bone, liver and serum were the evaluated variables. copper levels, in the both phases, did not affect bird performance and cu concentration in the bone. however, effect on the cu concentration in the liver and serum was observed in the growing phase. in the finishing phase, cu levels affected only cu concentration in the liver. in the growing phase, was choosen the requirement value estimated by the variable cu concentration in the serum, which was 11.1 ppm. in the finishing phase, levels of 8.5 to 11 ppm, commonly present in corn and soybean meal based diets, are adequate to animal performance.
Exigência nutricional de cálcio para frangos de corte, nas fases de crescimento e termina??o
, Luciano Moraes;Gomes, Paulo Cezar;Rostagno, Horacio Santiago;Albino, Luiz Fernando Teixeira;Cecon, Paulo Roberto;D'Agostini, Priscila;
Revista Brasileira de Zootecnia , 2004, DOI: 10.1590/S1516-35982004000200017
Abstract: two experiments were carried out to determine the nutritional requirement of calcium for broilers in growing (22 to 42 days), and finishing (43 to 53 days) phases. three hundred and sixty avian farm broiler chicks (180 from each sex) were used in both trails. the first experiment lasted 21 days and the second one, 10 days. a completely randomized design was used in both experiments, with six treatments, six replications and 10 birds per experimental unity (five males and five females). two basal diets were formulated to meet the birds nutritional requirements, except for the calcium, that remained deficient at the level of 0.16%. the basal diets in each experiment were supplemented with 0.0, 0.25, 0.50, 0.75, 1.00, and 1.25% calcium from calcium carbonate, resulting in the levels of 0.16, 0.41, 0.66, 0.91, 1.16 and 1.41% of calcium, and the treatments were used to estimated the calcium requirements of broilers. at the end of each experiment, 72 birds were sacrificed by cervical dislocation for the purpose of determining the tibia breaking strength and tibia obtained calcium and ash. weight gain, feed:gain ratio, tibia calcium contents (percentage and gram), tibia breaking strength (kgf), ashes contents in the tibia (percentage and gram) were the evaluated variables. the calcium requirements were estimated using the quadratic regression model. according to the biological values observed for the chickens were suggested the calcium requirements estimates of 1.02 and 1.01% for broilers from 22 to 42 and 43 to 53 days old, respectively. however, according to the tibia breaking strength, the calcium requirement suggested for broilers from 22 to 42 and 43 to 53 days old would be 1.28 and 1.18% respectively.
Determina??o da exigência nutricional de treonina para poedeiras leves e semipesadas
Valerio, Sandra Roselí;Soares, Paulo Rubens;Rostagno, Horacio Santiago;Silva, Martinho de Almeida e;Albino, Luiz Fernando Teixeira;Lana, Geraldo Roberto Quint?o;Goulart, Cláudia de Castro;Kill, Jo?o Luís;
Revista Brasileira de Zootecnia , 2000, DOI: 10.1590/S1516-35982000000200027
Abstract: an experiment was carried out to determine the nutritional threonine requirement for white-egg and brown-egg laying hens, during a period from 21 to 36 weeks. five hundred and seventy six laying hens, 288 from white-egg and 288 from brown-egg, were used during four experimental periods of 28 days each. a complete randomized blocks design in a fatorial arangement (level x trademarks), with six replicates (eight birds/replicate), was used. the treatments consisted on a basal diet with 14.2% crude protein supplemented with 0.025, 0.050, 0.075, 0.100, and 0.125% of l-threonine providing a total of 0.510, 0.535, 0.560, 0.585, 0.610, and 0.635% of threonine. the productive performance and internal egg quality were evaluated. feed intake, egg production, egg mass and weight gain were superior for the brown-egg laying hens. egg production and internal egg quality, feed: gain ratio, body weight gain were not influenced by the used threonine levels. the level of 0,510% of threonine, that correspond to 515 mg/hen·day (0,423% of digestible threonine) and 535 mg/hen·day (0,440% of digestible threonine), was sufficient to meet the performance and to the internal egg quality for the studied characteristics of both white-egg and brown-egg laying hens, respectively.
Reparación endovascular de aneurismas de aorta abdominal (parte I): Epidemiología indicaciones y limitaciones
Fominaya Pardo,Roberto Carlos; Maynar Moliner,Manuel; Rostagno,Roman;
Revista Colombiana de Cirugía , 2007,
Abstract: abdominal aortic aneurysms constitute a frequent pathology, with high propensity to rupture and death; endovascular repair is an alternative to conventional repair in high-risk patients. the technological development and betterment of endoprosthesis will allow the application of this method in patients considered to be of good risk for conventional open repair. this article presents the basic knowledge that should possess the specialists in cardiovascular diseases in regard to epidemiology and indications and limitations of the endoluminal repair of abdominal aortic aneurysms.
Reparación endovascular de aneurismas de aorta abdominal (parte I): Epidemiología indicaciones y limitaciones Endovascular repair of abdominal aortic aneurysms (Part I): Epidemiology, indications, and limitations
Roberto Carlos Fominaya Pardo,Manuel Maynar Moliner,Roman Rostagno
Revista Colombiana de Cirugía , 2007,
Abstract: Los aneurismas de la aorta abdominal son una patología frecuente, con alta afinidad hacia la ruptura y muerte. La reparación endovascular es una alternativa al reparo convencional en pacientes de alto riesgo, y el desarrollo tecnológico y el perfeccionamiento de las endoprótesis va a permitir su aplicación en pacientes de buen riesgo para reparo convencional con cirugía abierta. En este artículo se dan las pautas básicas que deben conocer los especialistas en enfermedades cardiovasculares acerca de la epidemiología, indicaciones y limitaciones del reparo endoluminal de los aneurismas de la aorta abdominal. Abdominal aortic aneurysms constitute a frequent pathology, with high propensity to rupture and death; endovascular repair is an alternative to conventional repair in high-risk patients. The technological development and betterment of endoprosthesis will allow the application of this method in patients considered to be of good risk for conventional open repair. This article presents the basic knowledge that should possess the specialists in cardiovascular diseases in regard to epidemiology and indications and limitations of the endoluminal repair of abdominal aortic aneurysms.
Influence of CDW Recycled Aggregate on Drying Shrinkage of Mortar  [PDF]
Paulo Roberto Lopes Lima, Monica Batista Leite
Open Journal of Civil Engineering (OJCE) , 2012, DOI: 10.4236/ojce.2012.22009
Abstract: The use of fine recycled aggregates as raw material in the production of mortars appears as a good alternative to minimize waste disposal, so as to reduce natural resources consumption and to find and supply suitable substitutes for natural aggregates. However, the use of this alternative material in a safe way must be carried out by a wide investigation of its long term behavior. In this way, this paper will examine the mechanical strength, physical properties and drying shrinkage of mortar, which use recycled fine aggregates that have originated from construction and demolition waste (CDW) containing mortar (55%), ceramic (26%) and concrete (16%). Two natural mortars, made with natural sand, were produced with cement/sand ratios of 1:4 and 1:8 (by weight) and a fixed consistency index of 260 +10 mm. Recycled mortar was produced with 50% of substitution rate, in volume, of natural aggregate by recycled one. Results show that recycled mortars present higher total porosity, absorption rate and drying shrinkage than reference mortar.
Desempenho de frangos de corte, digestibilidade de nutrientes e valores energéticos de ra es formuladas com vários milhos, suplementadas com enzimas
Rodrigues Paulo Borges,Rostagno Horacio Santiago,Albino Luiz Fernando Teixeira,Gomes Paulo Cezar
Revista Brasileira de Zootecnia , 2003,
Abstract: Dois experimentos foram conduzidos com o objetivo de verificar o desempenho de frangos de corte, a digestibilidade de nutrientes e os valores energéticos de ra es formuladas com milhos, de diferentes variedades (experimento 1) e regi es (experimento 2), suplementadas com um complexo enzimático. Em cada experimento foram utilizados 480 pintos Hubbard machos, com 14 dias de idade, os quais foram criados até a idade de 27 dias, período no qual foi avaliado o desempenho. As aves receberam os tratamentos em esquema fatorial 6 x 2 (variedades x complexo enzimático), em quatro repeti es de 10 aves cada. Cada milho foi misturado em uma ra o basal, na propor o de 63,24%, constituindo as dietas experimentais, cujos níveis de proteína bruta e valores energéticos variaram em fun o da composi o dos milhos. Utilizou-se o óxido cr mico como indicador, na propor o de 0,5%. A partir do 23o dia, as excretas foram coletadas por 5 dias e, no 28o dia, todas as aves de cada repeti o foram abatidas e o conteúdo de digesta presente nos 30 cm do íleo terminal, anterior à jun o íleo-cecal, coletado. As amostras das excretas e da digesta ileal foram analisadas em matéria seca, nitrogênio, energia bruta e amido, e os coeficientes de digestibilidade e valores energéticos determinados por meio do fator de indigestibilidade do óxido cr mico. Concluiu-se que a procedência dos milhos (variedades ou regi es) influenciou o desempenho; a digestibilidade dos nutrientes e os valores energéticos das ra es variaram em fun o da composi o dos milhos; a digestibilidade ileal da proteína bruta, do amido e a energia digestível ileal das ra es melhoraram com a suplementa o enzimática.
Determination and prediction of the digestible and metabolizable energy values of poultry by-products for swine Determina o e predi o dos valores de energia digestível e metabolizável da farinha de vísceras para suínos
Paulo Cesar Pozza,Paulo Cezar Gomes,Juarez Lopes Donzele,Horácio Santiago Rostagno
Revista Brasileira de Saúde e Produ??o Animal , 2008,
Abstract: The experiment was carried out to determine the chemical and energetic composition of five poultry by-products and to develop prediction equations of digestible and metabolizable energy values based on the chemical and physical composition of feedstuffs. Twenty-four crossbred castrated male swine averaging 26.3 1.9kg of initial weight were allotted to a randomized block design, with six treatments, four replicates and one animal per experimental unit, to determine the digestible and metabolizable energy values. The treatments consisted of a basal diet and five poultry by-products, that replaced in 20% the basal diet. The crude protein content of poultry by-products ranged from 52.77 to 62.47% and the digestible and metabolizable energy values, from 3,281 to 4,567kcal/kg and 3,151 to 4,293kcal/kg, respectively. The prediction equations of digestible and metabolizable energy that showed higher R2 were: DE = 8226.97 – 33.01xCP -160.05xAsh and ME = 10146.5 – 166.27xAsh – 1259.25xCa. O experimento foi conduzido com o objetivo de determinar a composi o química e energética de cinco farinhas de vísceras, assim como de desenvolver equa es de predi o dos valores de energia digestível e metabolizável com base na composi o química e física dos alimentos. Na determina o dos valores de energia digestível e metabolizável, foram utilizados 24 suínos mesti os, machos castrados com peso inicial de 26,3 1,9kg, distribuídos em delineamento experimental de blocos ao acaso, com seis tratamentos, quatro repeti es e um animal por unidade experimental. Utilizaram-se uma dieta-referência e cinco farinhas de vísceras, em substitui o a 20% da ra o-referência. O teor de proteína bruta das farinhas de vísceras variou de 52,77 a 62,47%, enquanto os valores de energia digestível variaram de 3.281 a 4.567 kcal/kg e os de energia metabolizável, de 3.151 a 4.293 kcal/kg. As equa es de predi o da energia digestível e metabolizável que apresentaram maiores R2 foram: ED = 8226,97 - 33,01xPB -160,05xMM e EM = 10146,5 - 166,27xMM - 1259,25xCa.
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