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Search Results: 1 - 10 of 17669 matches for " Horacio Santiago;Gomes "
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Determina??o dos valores energéticos de alguns óleos e gorduras para pintos de corte machos e fêmeas aos 21 dias de idade
Nascif, Carla Cristina Cardoso;Gomes, Paulo Cezar;Albino, Luiz Fernando Teixeira;Rostagno, Horacio Santiago;
Revista Brasileira de Zootecnia , 2004, DOI: 10.1590/S1516-35982004000200014
Abstract: one bioassay was carried out using 21-to32-day old broilers chicks to determine the values of apparent metabolizable energy (ame) and nitrogen-corrected apparent metabolizable energy (amen) of crude soybean oil, corn oil, canola oil, avian fat, coconut fat, swine lard, beef tallow, crude soybean oil + coconut fat and crude soybean oil + beef tallow, both latter in 1:1 proportion. the method of total excreta collection was used for the trials, which lasted 10 days each: the first five days for adaptation and the five remaining days for excreta collection. in the assay, difference was observed among the treatments and between the sexes, with the amen values obtained for the females accounting for 98% of the amen values obtained for the males, on average. the interaction feed x sex showed no difference. the mean values of amen observed for broilers chicks for crude soybean oil, corn oil, canola oil, avian fat, coconut fat, swine lard, beef tallow, crude soybean oil + coconut fat and crude soybean oil + beef tallow, 1:1, were, respectively: 8,273, 8,582, 8,681, 8,511, 7,487, 7,536, 7,227, 8,029 and 8,171 kcal/kg as fed.
Valores de composi??o química e energética de alguns alimentos para aves
D'Agostini, Priscila;Gomes, Paulo Cezar;Albino, Luiz Fernando Teixeira;Rostagno, Horacio Santiago;Sá, Luciano Moraes;
Revista Brasileira de Zootecnia , 2004, DOI: 10.1590/S1516-35982004000100017
Abstract: the experiment was carried out to determine the chemical and the energetic values of eight feedstuffs (corn grain, corn pre-cooked i and ii, canola meal, spray-dried plasma, poultry by-product meal, glucose and corn starch) for birds. to determine the apparent metabolizable energy (ame) and nitrogen corrected apparent (amen) values, the traditional method of total excreta collection was used, with 400 broiler chicks, male and female, 21 days old. a completely randomized design, with ten treatments (eight feedstuffs and two reference diets), and five replications of eight birds per experimental unit, was used. the corn grain and pre-cooked i and ii replaced 40%, and the starch and glucose 20% of the reference diet containing 26% crude protein (cp); the canola meal replaced 40%, and spray-dried plasma and poultry by-products meal 20% of the reference diet containing 18% cp. dry matter - dm (%), cp (%), ame (kcal/kg) e amen (kcal/kg) values were, respectively, for corn grain: 87.72, 7.33, 3,246, and 3,235; for pre-cooked i: 87.75, 7.14, 3,385, and 3,379; for pre-cooked ii: 87.88, 7,34, 3.187 and 3.179; for canola meal: 87,53, 37,89, 1,793 and 1,778; for spray-dried plasma: 90,67, 74,24, 3.503 and 3.474; and for poultry by-product meal: 90.35, 64.98, 4,293 and 4,268. for the glucose and corn starch, only the values of dm (%), ame (kcal/kg) and amen (kcal/kg) were determined, and for the glucose the values were 99.12, 3,170, and 3,168 and for corn starch, 85.52, 3,203, and 3201, respectively.
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.
Níveis nutricionais de cobre para frangos de corte machos e fêmeas na fase inicial
Schmidt, Marlene;Gomes, Paulo Cezar;Rostagno, Horacio Santiago;Albino, Luiz Fernando Teixeira;Cupertino, Edwiney Sebasti?o;
Revista Brasileira de Zootecnia , 2005, DOI: 10.1590/S1516-35982005000500021
Abstract: three hundred and eighty-four birds, half males and half females, were used to determine the copper (cu) requirement for broilers in the initial phase (from 8 to 21 days). a basal diet was formulated to meet the bird nutritional requirements, except for cu, that was deficient at 1.47 ppm level. the treatments consisted of cu supplementation levels, from cu sulfate, in a total of 1.47, 4.97, 8.47, 11.97, 15.47 and 18.97 ppm cu in the diet. weight gain, feed intake, feed:gain ratio and cu concentration in the bone, liver and serum were evaluated. the studied cu levels affected feed intake, but did not alter weight gain and feed:gain ratio. no effects of cu levels on cu concentration in the bone were detected. effects of increasing dietary cu levels on cu concentration in the liver and serum were observed. however, the most adequate value of cu requirement was estimated in the serum, because it better represents the cu nutricional status in the animal organism. it was concluded that cu requirements for broilers, males and females, from 8 to 21 days old is of 9.48 ppm, considering that corn and soybean meal-based diets, for broilers, contain from 8.5 to 11 ppm cu and that cu bioavailability in the soybean meal of 38%.
Exigência nutricional de cálcio e sua biodisponibilidade em alguns alimentos para frangos de corte, no período de 1 a 21 dias de idade
, Luciano Moraes;Gomes, Paulo Cezar;Albino, Luiz Fernando Teixeira;Rostagno, Horacio Santiago;D'Agostini, Priscila;
Revista Brasileira de Zootecnia , 2004, DOI: 10.1590/S1516-35982004000100020
Abstract: one experiment was carried to determine the nutritional requirement of calcium for broilers in the starting phase (1 to 21 days) and to evaluate the availability of this mineral in dicalcium phosphate, calcitic limestone and dolomitic limestone. seven hundred and twenty 1-day old avian farm broiler chicks (360 from each sex) were used. the experiment lasted 21 days. a completely randomized design, with 12 treatments, six replications and 10 birds per experimental box (five males and five females) was used. a basal diet was formulated to meet the birds nutritional requirements, except for the calcium, that remained deficient at the level of 0.161%. the basal diets were supplemented with 0.01, 0.25, 0.50, 0.75, 1.00 and 1.25% calcium levels from calcium carbonate and two levels of calcium (0.50 and 0.75%) from each source in test: dicalcium phosphate, calcitic limestone and dolomitic limestone. the first six treatments were used to estimate the calcium requirements of broilers. to determine the calcium availability in the studied sources, the treatments with 0.25, 1.00 and 1.25% of calcium were not considered. at the end of experiment, 144 birds were sacrificed by cervical dislocation for the purpose of determining the tibia breaking strength, calcium and ash levels in their tibias. according to the biological values observed for the chickens, the estimated calcium requirements were of 1.02% for broilers from 1 to 21 days old. however, according to the tibia breaking strength, the calcium requirement suggested for broilers from 1 to 21 days of age would be 1.20%. the average values of relative calcium availability were 99.99% for dicalcium phosphate, 84.67% for calcitic limestone and 75.28% for dolomitic limestone.
Exigência nutricional de lisina digestível para galinhas poedeiras no período de 34 a 50 semanas de idade
, Luciano Moraes;Gomes, Paulo Cezar;Rostagno, Horacio Santiago;Albino, Luiz Fernando Teixeira;D'Agostini, Priscila;
Revista Brasileira de Zootecnia , 2007, DOI: 10.1590/S1516-35982007000800016
Abstract: with the objective to establish the nutritional requirement of lysine for light and semi-heavy laying hens, in the period from 34 to 50 weeks old, 360 laying hens (half lohmann and half lohmann brown) were submitted to a basal ration containing 2.850 kcal me/kg, 15.0% cp, supplemented with five levels (0.00, 0.05, 0.10, 0.15 and 0.20%) of l-lysine, to provide 0.584, 0.634, 0.684, 0.734, and 0.784% of digestible lysine in the rations. a 5 x 2 (lysine 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 unit, albumen and yolk index) were evaluated. the lysine levels did not affect the body weight change, feed intake and egg quality in both laying hen strains. feed conversion and egg production, average egg weight and egg mass were positive influenced by the lysine level, in light and the semi-heavy. the digestible lysine requirement estimated by quadratic model, for the light and the semi-heavy laying hens, was 0.732 and 0.715% in the ration, corresponding to the daily intake per hen of 893 and 804 mg lysine/day, respectively.
Composi??o bromatológica, energia metabolizável e equa??es de predi??o da energia do gr?o e de subprodutos do trigo para pintos de corte
Nunes, Ricardo Vianna;Rostagno, Horacio Santiago;Albino, Luiz Fernando Teixeira;Gomes, Paulo Cezar;Toledo, Rodrigo Santana;
Revista Brasileira de Zootecnia , 2001, DOI: 10.1590/S1516-35982001000300025
Abstract: the apparent metabolizable energy (ame) and nitrogen corrected apparent metabolizable energy (amen) values were determined and energy prediction equations obtained using the chemical composition of 11 feedstuffs. the feedstuffs evaluated were: brown flour meal, wheat flour, wheat grain, wheat grain residue, wheat germ, cookies residue, macaroni residue and, four wheat brans. total excreta collection method was used, with 480 broiler chicks, 16 to 24 days old. a randomized complete design was utilized, with 11 feedstuffs and a basal reference diet, using four replications and ten birds per experimental unit (five males and five females). each feedstuff replaced the reference diet at the amount of 40%. the feedstuffs ame and amen values expressed in kcal/kg of dry matter (dm), varied from 1807 to 1758 for wheat bran 3 and from 4480 to 4339 for cookies residue, respectively. the prediction equations that best estimated (r2 = 98%) ame and amen values were those in which crude protein (cp) and/or neutral detergent fiber (ndf) contents, were used ame (kcal/kg dm) = 4910,03 - 47,82*cp - 47,77*ndf; and amen (kcal/kg dm)= 4754.02 - 48.38*cp - 45.32*ndf.
Composi o Química e Valores de Energia Metabolizável das Farinhas de Penas e Vísceras Determinados por Diferentes Metodologias para Aves
Nascimento Adriana Helena do,Gomes Paulo Cezar,Albino Luiz Fernando Teixeira,Rostagno Horacio Santiago
Revista Brasileira de Zootecnia , 2002,
Abstract: Uma série de experimentos foi realizada com o objetivo de estabelecer o valor nutritivo de nove farinhas de vísceras e de seis farinhas de penas para aves. Quatro diferentes metodologias foram utilizadas para determinar os valores de energia metabolizável aparente corrigida (EMAn) e verdadeira corrigida (EMVn): método tradicional (com pintos e galos) e método de Sibbald (com galos inteiros e galos cecectomizados). Os valores de EMAn e EMVn da farinha de vísceras estimados variaram de 3.051 a 3.621 e de 2.866 a 3.583 kcal/kg, respectivamente. Para a farinha de penas os valores variaram de 2.952 a 3.629 e de 2.703 a 3.671 kcal/kg para a EMAn e EMVn, respectivamente. Entre as metodologias realizadas para determina o dos valores energéticos dos alimentos, as correla es foram baixas, portanto, as diferen as nos valores energéticos dos alimentos podem ser atribuídas à metodologia empregada.
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.
Valores Energéticos da Soja e Subprodutos da Soja, Determinados com Frangos de Corte e Galos Adultos
Rodrigues Paulo Borges,Rostagno Horacio Santiago,Albino Luiz Fernando Teixeira,Gomes Paulo Cezar
Revista Brasileira de Zootecnia , 2002,
Abstract: Os valores energéticos (energia metabolizável aparente - EMA e verdadeira - EMV) de amostras de farelo de soja (1, 2, 3, 4 e texturizado) e de soja integral processada (Jet Sploder, tostada e micronizada) foram determinados, utilizando-se o método tradicional de coleta total de excretas, com pintos em crescimento e o método de alimenta o for ada, com galos adultos. No primeiro ensaio, as ra es experimentais com os 8 alimentos foram fornecidas a quatro repeti es de 10 aves cada, exceto a ra o referência, a qual foi fornecida a seis repeti es. No segundo ensaio, cada um dos alimentos foi fornecido a seis galos, os quais receberam 15 g do alimento pela manh (8 h) e 15 g à tarde (16 h), após terem sofrido um jejum de 24 horas. Simultaneamente, seis galos foram mantidos em jejum, para determina o das perdas endógenas e metabólicas. Após determinados os valores energéticos, estabeleceram-se equa es para predizer as EMAn obtidas com pintos e EMVn com galos, utilizando-se a composi o dos alimentos. Os valores energéticos das amostras de farelo de soja 1, 2, 3, 4 e texturizado, sojas integral Jet Sploder, integral tostada e micronizada foram 2337 e 2733; 2376 e 2818; 2469 e 2766; 2437 e 2881; 2833 e 2810; 3224 e 3775; 3400 e 4001; 4104 e 4441 kcal/kg de MS, respectivamente para as EMAn determinadas com pintos e EMVn com galos; as equa es ajustadas com duas a quatro variáveis foram boas preditoras dos valores energéticos dos alimentos, com valores de R2 superiores a 92%; as equa es com as variáveis fibra bruta (FB) e extrato etéreo (EE) podem estimar os valores energéticos da soja e subprodutos, sendo: EMAn = 2822,2 - 90,13FB + 49,96EE (R2 = 0,93) e EMVn = 2857,3 - 38,29FB + 61,02EE (R2 = 0,98).
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