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Search Results: 1 - 10 of 16190 matches for " Toledo Rodrigo Santana "
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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.
Determina??o da Biodisponibilidade da Lisina Sulfato e Lisina HCl com Frangos de Corte
Neme, Rafael;Albino, Luiz Fernando Teixeira;Rostagno, Horacio Santiago;Rodrigueiro, Ramalho José Barbosa;Toledo, Rodrigo Santana;
Revista Brasileira de Zootecnia , 2001, DOI: 10.1590/S1516-35982001000700013
Abstract: with the objective of determine the bioavailability of two lysine sources (lysine hcl and lysine sulfate), by a growth trial, 840 one day old male broiler chicks were placed in 56 boxes. two basal diets were formulated to supply the birds nutritional requirements, one for the starting and the other for the growing period, respectively, deficient only in lysine, which were supplemented 0,08, 0,16 and 0,24% lysine of both lysine sources. weight gain, feed intake, feed conversion, carcass yield, legs quarter yield, breast yield, breast meat yield and abdominal fat content were evaluated. multiple linear regression and the slope ratio technique was used to estimate equations. the bioavailabity of lysine sulfate was obtained as a percentage of lysine hcl considered as 100% available. the equations that best estimated the bioavailability of the lysine sulfate (x2) related to lysine hcl (x1) were: y = 544,72 + 439,62 x1 + 475,84 x2, r2 = 0,90, for weight gain (1 to 21 days of age); y = 1824,63 + 1469,18 x1 + 1381,33 x2, r2 = 0,85, for weight gain from 01 to 42 days of age;11 y = 1,9623 - 0,9043x1 ?1,0235 x2, r2 = 0,83, for feed conversion (1 to 21 days of age); y = 0,3766 + 0,5320 x1 + 0,4986 x2, r2 = 0,88, for breast yield (42 days of age) and y = 0,2565 + 0,4685x1 + 0,4300 x2, r2 = 0,92 for breast meat yield with 42 days of age. the average bioavailability of lysine sulfate was 100,19%, showing that there was no difference (p > 0.05), in the bioavailability of the two lysine sources studied.
Efeito da Rela??o Arginina: Lisina sobre o Desempenho e Qualidade de Carca?a de Frangos de Corte de 3 a 6 Semanas de Idade, em Condi??es de Alta Temperatura
Costa, Fernando Guilherme Perazzo;Rostagno, Horacio Santiago;Toledo, Rodrigo Santana;Albino, Luiz Fernando Teixeira;
Revista Brasileira de Zootecnia , 2001, DOI: 10.1590/S1516-35982001000800010
Abstract: an experiment was run using 720 male ross chicks, grown from 22 to 42 days of age under high environmental temperature condition (26.2 to 30.5oc), to evaluate the effect of the digestible arginine:lysine (arg:lys) ratio on performance and carcass quality of broiler chickens. a complete randomized design with six treatments (95.0, 102.5, 110.0, 117.5, 125.0 and 132.5% arg:lys ratio), six replicates and 20 birds per experimental unit was used. there was no significant effect on broiler performance, however arg:lys ratio linearly improved leg quarter yield and linearly decreased abdominal fat.
Valores energéticos e efeitos da inclus o da farinha integral da vagem de algaroba (Prosopis juliflora (Sw.) D.C.) em ra es de poedeiras comerciais
Silva José Humberto Vilar da,Silva Edson Lindolfo da,Jord?o Filho José,Toledo Rodrigo Santana
Revista Brasileira de Zootecnia , 2002,
Abstract: Um ensaio de metabolismo foi realizado para determinar os valores de EMV e EMVn da farinha integral de vagem de algaroba (FVA) com galos cecectomizados, utilizando o método Sibbald. Um experimento de desempenho foi realizado para avaliar os efeitos da inclus o da FVA em níveis de 0; 5; 10; 15; 20; 25; e 30% em ra es peletizada e farelada para poedeiras comerciais. No experimento 1, foram obtidos valores de EMV e EMVn de 2819 e 2806 kcal, respectivamente, enquanto a FVA apresentou cinco vezes mais celulose e quatro vezes mais lignina em compara o com o milho. No experimento 2, verificou-se que a peletiza o aumentou o peso vivo, peso dos ovos e da clara e a porcentagem de clara e reduziu a porcentagem de gema. O nível de 30% da FVA reduziu o peso e a massa de ovos e piorou a convers o alimentar, em compara o ao tratamento controle. Houve efeito quadrático do nível da FVA (como efeito principal) sobre o consumo de ra o, a produ o de ovos, massa de ovos, convers o alimentar por massa e porcentagens de casca, clara e gema. O consumo da FVA cresceu linearmente nas ra es peletizada e farelada em resposta ao seu aumento na ra o. A inclus o da FVA até 13,6%, em substitui o ao milho, em ra es isoprotéicas e isoenergéticas n o afetou adversamente o desempenho de poedeiras comerciais.
Efeito da Rela o Arginina: Lisina sobre o Desempenho e Qualidade de Carca a de Frangos de Corte de 3 a 6 Semanas de Idade, em Condi es de Alta Temperatura
Costa Fernando Guilherme Perazzo,Rostagno Horacio Santiago,Toledo Rodrigo Santana,Albino Luiz Fernando Teixeira
Revista Brasileira de Zootecnia , 2001,
Abstract: Foi realizado um experimento com 720 frangos de corte machos Ross, mantidos em alta temperatura ambiente (26,2 a 30,5oC), na fase de crescimento (22 a 42 dias de idade), com o objetivo de estudar o efeito da rela o arginina:lisina digestível (Arg:Lis) sobre o desempenho e a qualidade de carca a de frangos de corte. Foi utilizado um delineamento inteiramente casualizado com seis tratamentos (95,0; 102,5; 110,0; 117,5; 125,0; e 132,5% da rela o Arg:Lis na ra o), seis repeti es por tratamento e 20 aves por unidade experimental. N o houve efeito significativo dos tratamentos no desempenho de frangos de corte, entretanto, à medida que aumentou a rela o Arg:Lis, houve efeito linear crescente para o rendimento de perna e decrescente para a gordura abdominal.
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;Barboza, Walter Amaral;Toledo, Rodrigo Santana;
Revista Brasileira de Zootecnia , 2003, DOI: 10.1590/S1516-35982003000100022
Abstract: two assays were carried out to evaluate the broilers performance, nutrients digestibility and the energy values of diets formulated with corn from different varieties (experiment 1) and regions (experiment 2), supplemented with an enzymatic complex. in each assay, were used 480 male broilers hubbard, 14 days old, grown from 14 to 27 days to evaluate performance. the broiler chickens fed an experimental diets in 6x2 factorial design (varieties x region), in four replicates of 10 broilers in each experimental unit. each corn were mixed in a basal diet in a fixed amount of 63.24%, constituting the experimental diets. the crude protein and energy values changed according to corn composition. chromic oxide (0.5%) was used as indicator. during the 23rd to 27th days, the excretas were collected and, in the 28th day, all broilers of each replicate were slaughtered and the digesta present in the last 30 cm of the terminal ileum, anterior to ileo-cecal junction, was collected. the samples of the excreta and ileal digesta were analyzed for dry matter, nitrogen, gross energy and starch, and the digestibility coefficients and energy values, were calculated using the indigestibility factor of chromic oxide. it was concluded that origen (varieties or regions) effected broiler performance; the nutrient digestibility and energy values of diets formulated with the corn type showed difference as a function of the chemical composition. the ileal digestibility of crude protein, starch and energy was improved in the diets supplemented with enzymes.
Níveis dietéticos de lisina para frangos de corte de 1 a 21 e 22 a 40 dias de idade
Costa, Fernando Guilherme Perazzo;Rostagno, Horacio Santiago;Albino, Luiz Fernando Teixeira;Gomes, Paulo Cezar;Toledo, Rodrigo Santana;
Revista Brasileira de Zootecnia , 2001, DOI: 10.1590/S1516-35982001000600016
Abstract: two experiments were carried out to determine the nutritional requirement of total lysine for ross broiler chickens from one to 21 and 22 to 40 days of age, of both sexes. the parameters evaluated were weight gain, feed intake, feed conversion and carcass evaluation. in each experiment, a completely randomized experimental design, in a 2 x 6 (two sexes and six dietary lysine levels) factorial arrangement with six replicates, using a total of 1440 birds, was used. the basal diets with 1.03% total lysine, 22.0% cp and 3000 kcal me/kg in the first experiment and 0.92% total lysine, 20.0% cp and 3150 kcal me/kg in the second experiment, suplemented with six levels pure lysine (0.0; 0.06; 0.12; 0.18; 0.24 and 0.30%), were used. considering weigth gain and feed conversion, the dietary requirement estimates for the experiment from 1 to 21 days were 1.303 and 1.249% total lysine and 1.183 and 1.129% digestible lysine for males and females, respectively. for the experiment from 22 to 40 days, the performance and evaluation carcass values were 1.164 and 1.143% total lysine and 1.044 and 1.023% digestible lysine for males and females, respectively.
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;Nunes, Ricardo Vianna;Toledo, Rodrigo Santana;
Revista Brasileira de Zootecnia , 2002, DOI: 10.1590/S1516-35982002000700020
Abstract: energy values (aparent metabolizable energy - ame and true metabolizable energy - tme) of soybean meal samples (1, 2, 3, 4, and texturized) and processed full fat soybean samples (jet sploder, toasted and micronized) were determined by using the traditional method of excreta collection with growing chickens and the forced feeding method, by using adult cockerels. in the first assay, the experimental diets were fed to four replicates with ten birds in each experimental unit and the basal diet fed to six replicates. in the second assay, each one of feedstuffs was fed to six cockerels, which were fed 15 g at 8:00 a.m. and 15 g at 4:00 p.m., after 24 hours fast. simultaneously six cockerels were fasted to determine the metabolic and endogenous losses. after the energy values determination, prediction equations were obtained to predict the amen with chicks and tmen with cockerels of soybean and soybean byproducts, based on the feedstuffs chemical composition. the energy values of soybean meals (1, 2, 3, 4, and texturized), full fat soybean jet sploder, toasted and micronized were 2337 and 2733; 2376 and 2818; 2469 and 2766; 2437 and 2881; 2833 and 2810; 3224 and 3775; 3400 and 4001; 4104 and 4441 kcal/kg of dry matter, respectively. the equations adjusted with two to four variables showed good predicton of energy values, with r2 higher than 92 %. prediction equations adjusted with crude fiber (cf) and ether extract (ee) variables can be used to predict the energy values of soybean and soybean byproducts being: amen = 2822.2 - 90.13fb + 49.96ee (r2 = 0,93) and emvn = 2857.3 - 38.29fb + 61.02ee (r2 = .98).
Aminoácidos digestíveis verdadeiros da soja e subprodutos, determinados com galos cecectomizados
Rodrigues, Paulo Borges;Rostagno, Horacio Santiago;Albino, Luiz Fernando Teixeira;Gomes, Paulo Cezar;Santana, Rodrigo Toledo;Nunes, Ricardo Vianna;
Revista Brasileira de Zootecnia , 2002, DOI: 10.1590/S1516-35982002000400021
Abstract: the digestibility coefficients and the true digestible amino acids content of soybean and soybean by-products were determined using cecectomized adult cockerels. each one of the 8 feedstuffs evaluated was fed to six cockerels, consuming 15 g at 8:00 a.m. and 15 g at 16:00h p.m., after 24 hours fasting. simultaneously, six cockerels were fasted to determine metabolic and endogenous losses. after determination of the digestibility coefficients and calculation of the digestible amino acids, prediction equations were simulated to predict the soybean and soybean byproducts total and digestible composition in lysine (lys), methionine (met), methionine plus cystine (met + cys), threonine (thr) and arginine (arg), as a function of the chemical composition (crude protein - cp, crude fiber - cf, ether extract - ee and ash). the average amino acids digestibility coefficient (essential and non essential) of soybean meal samples (1, 2, 3, 4 and texturized), full fat soybean jet sploder, toasted and micronized were 92,78 and 90,76; 92,66 and 89,70; 93,75 and 91,26; 93,32 and 90,12; 91,55 and 89,08; 94,80 and 92,34; 94,61 and 91,47; 93,20 and 90,47%, respetively. the prediction equations were adjusted with higher r2 values higher than 91%, and crude protein showed high positive correlation. the equations lys = -0.32161 + 0.06731pb (r2 = 0.99); met = 0.02263 + 0.01323pb (r2 = 0.96); met+cys = 0.078949 + 0.02563pb (r2 = 0.94); thr = 0.20930 + 0.03533pb (r2 = 0.95); arg = -0.39589 + 0.08022pb (r2 = 0.98) e lys = -0.29472 + 0.06319pb (r2 = 0.98); met = 0.02884 + 0.01228pb (r2 = 0.93); met+cys = 0.08974 + 0.02220pb (r2 = 0.91); thr = 0.15813 + 0.03235pb (r2 = 0.95) e arg = -0.32129 + 0.07681pb (r2 = 0.96), can be used to predict the total and digestible amino acids content of soybean and byproducts, respectively.
Valores Energéticos do Milheto, do Milho e Subprodutos do Milho, Determinados com Frangos de Corte e Galos Adultos
Rodrigues, Paulo Borges;Rostagno, Horacio Santiago;Albino, Luiz Fernando Teixeira;Gomes, Paulo Cezar;Barboza, Walter Amaral;Santana, Rodrigo Toledo;
Revista Brasileira de Zootecnia , 2001, DOI: 10.1590/S1516-35982001000700015
Abstract: two metabolism assays were carried out in order to evaluate the aparent metabolizable energy (ame) and true metabolizable energy (tme) values of 11 feedstuffs (corn and corn byproducts and of the millet samples) by using the traditional method of excreta collection with growing chickens and the forced feeding method, by using adult cockerels (sibbald method). in the first assay, 540 male hubbard chickens fed the experimental diets in four replicates with ten birds in each experimental unit and the basal diet fed to six replicates. in the second assay, each one of 11 feedstuffs was fed to six cockerels, 15 g were fed at 8:00 a.m. and 15 g were fed at 4:00 p.m., after fastening by 24 hours. simultaneously six cockerels were fasted in order to determine the metabolic and endogenous nitrogen losses. after determination of amen and tmen values, prediction equations were simulated to predict the energetic values of the corn and corn byproducts, based on chemical composition. the amen and tmen of feed evaluated ranged from 1937 to 4108 and from 2246 to 4248 kcal/kg of dry matter, respectively. the results shown that millet should be one alternative feed to corn, with lower energetic value. the prediction equations adjusted with the variables neutral detergent fiber (ndf) or crude fiber (cf) and ash should be used to predict the energetic values of corn and corn byproducts, being amen = 4281.6 ? 39.97 ? 72.90ash (r2 = 0.96) or eman = 4354.8 ? 112.05cf ? 151.74ash (r2 = 0.95) and emvn = 4485.1 ? 34.20ndf ? 83.83ash (r2 = 0.94) or 4250.22 ? 136.60cf ? 120.48ash (r2 = 0.91).
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