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Amino Acid Digestibility of Feed Ingredients in Cecectomized Adult Roosters Rev. Bras. Ciênc. Avic.
Leme,BB; Sakomura,N; Viana,GS; Soares,L; Melaré,MC; Oliveira,MJK; Mansano,CFM.
ABSTRACT A digestibility assay was conducted in order to determine the digestibility coefficients (DC) of amino acids of feed ingredients in cecectomized adult roosters. In total 48 cecectomized adult roosters were used to assess the coefficient of digestibility of 7 ingredients: corn, soybean meal, soybean concentrate, corn gluten meal, wheat bran, peanut meal, and feather meal. Each ingredient was replicated six times and a group of 6 rooster was used to measure endogenous amino acid losses. After 48 hours of fasting, the roosters were tube fed 20g of ingredients tested twice during a day. At 12 hour-intervals excreta and endogenous losses were collected and immediately freeze-dried for further chemical analysis. At the end of the assay, excreta were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cecectomized; Digestible amino acids; Poultry.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200340
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Apparent and true digestibility of protein and amino acid in feedstuffs used in Nile Tilapia feed as determined by the technique of dissection. Repositório Alice
RIBEIRO, F. B.; LANNA, E. A. T.; BOMFIM, M. A. D.; DONZELE, J. L.; QUADROS, M.; CUNHA, P. de S. L.; TAKISHITA, S. S.; VIANNA, R. A..
Tipo: Separatas Palavras-chave: Digestible amino acids.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/938920
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Apparent and true digestibility of protein and amino acid in feedstuffs used in Nile Tilapia feed as determined by the technique of dissection R. Bras. Zootec.
Ribeiro,Felipe Barbosa; Lanna,Eduardo Arruda Teixeira; Bomfim,Marcos Antonio Delmondes; Donzele,Juarez Lopes; Quadros,Moisés; Cunha,Patrícia de Souza Lima; Takishita,Sylvia Sanae; Vianna,Rafael Alves.
The objective of this study was to determine the coefficients of apparent and true digestibility of protein and amino acids of five feedstuffs (corn, wheat bran, soybean meal, corn gluten meal and fish meal) in 900 sex-reversed Nile tilapia (Oreochromis niloticus) of the Thai strain during the growth phase, with an initial weight of 315±8.45 g. A total of 750 fish were distributed according to a randomized block design (repetitions in time) into five treatments with six replicates of 25 fish each. The remaining 150 fish were fed a protein-free diet to measure endogenous protein and amino acid losses in order to determine the true digestibility of these components. Each tested diet contained a single protein source, which consisted of one of the evaluated...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Digestible amino acids; Endogenous loss; Protein-free diet; Oreochromis niloticus.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000500001
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Determination of digestible isoleucine: lysine ratio in diets for laying hens aged 42-58 weeks R. Bras. Zootec.
Mello,Heloisa Helena de Carvalho; Gomes,Paulo Cezar; Rocha,Tatiana Cristina da; Donzele,Juarez Lopes; Almeida,Rodrigo Lopes de; Troni,Allan Reis; Carvalho,Bruno Reis de; Viana,Gabriel da Silva.
Two hundred and fifty-two Hy-Line W36 laying hens were allotted in a completely randomized design with 6 treatments, 7 replicates and 6 hens per experimental unit in order to determine the ideal ratio of isoleucine (Ile) in relation to lysine (Lys) to laying hens aged 42-58 weeks. Experimental diets contained digestible Ile at different levels, resulting in different Ile:Lys ratios (0.73:1; 0.78:1; 0.83:1; 0.88:1; 0.93:1 and 0.98:1). A basal diet was formulated to provide Isoleucine in levels below recommendations. This diet was supplemented with L-isoleucine to make up the 6 diets. Each diet was made isonitrogenous by varying the dietary contents of glutamic acid and isocaloric by adjusting the contents of cornstarch. All essential amino acids were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Digestible amino acids; Egg quality; Ideal protein; White laying hens.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000500032
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Different criteria for feed formulation based on digestible amino acids for broilers Rev. Bras. Ciênc. Avic.
Araújo,LF; Junqueira,OM; Araújo,CSS; Laurentiz,AC; Assuena,V; Gomes,GA.
An experiment was carried out to evaluate different criteria in feed formulation based on digestible amino acids for broilers during the grower phase. Diets were formulated according to the recommendations for digestible methionine, methionine + cysteine, lysine, and threonine. A total number of six hundred Cobb 500 male day-old chicks were distributed in a completely randomized experimental design, with three formulation criteria supplying the recommendations established by Baker & Chung (1992), Degussa (1997), and Rostagno et al. (2000), with 4 replicates of 50 birds each. No significant differences were observed for weight gain and feed intake. However, feed conversion ratio improved when birds were fed the diets containing the profiles...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Broilers; Carcass yield; Digestible amino acids; Performance.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000400005
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Different criteria of feed formulation for broilers aged 43 to 49 days Rev. Bras. Ciênc. Avic.
Araújo,LF; Junqueira,OM; Araújo,CSS; Faria,DE; Andreotti,MO.
An experiment was carried out to evaluate different formulated feeds for broilers from 43 to 49 days of age. Six hundred male Cobb broilers were distributed in a completely at random experimental design with 3 treatments (3 different criteria of feed formulation) and 4 repetitions per treatment, with 50 birds each. Diets were formulated with different criteria of digestible amino acid inclusion (methionine, methionine+cystine, lysine and threonine), according to the profiles recommended by Baker and Chung (1992), Degussa (1997) and Rostagno (2000) Live performance and carcass yield were evaluated in birds fed the different diets from 43 to 49 days of age). The profile established by Degussa (1997) resulted in best live performance. All profiles supplied...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Broilers; Carcass yield; Digestible amino acids; Performance.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000100008
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Digestible isoleucine requirements for 22- and 42-day-old broilers Animal Sciences
Duarte, Karina Ferreira; Junqueira, Otto Mack; Filardi, Rosemeire da Silva; Laurentiz, Antonio Carlos de; Domingues, Carla Heloisa de Faria; Rodrigues, Eliana Aparecida.
Current experiment established different criteria to evaluate the requirements of digestible isoleucine for 22- and 42-day-old broilers by different regression models (quadratic, exponential and Linear Response Plateau) and, in the case of statistical significance, the comparison of means by Duncan’s test at 5% probability. A total of 1,920 Cobb 500 male broilers were used in an entirely randomized experimental design, with 6 treatments (6 digestible isoleucine levels: 0.6118; 0.6655; 0.7192; 0.7729; 0.8265 and 0.8802%) and 8 replications, with 40 broilers each. Data on performance and carcass characteristics were evaluated. Level 0.7192% of digestible isoleucine was considered standard. The digestible isoleucine level recommended for 22- and 42-day-old...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Digestible amino acids; Ideal protein; Performance; Regression analyses.
Ano: 2015 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/24473
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Digestible lysine levels for brown layers Animal Sciences
Souza, Henrique Baltazar de; Faria, Douglas Emygdio de; Caetano, Vinicius Camargo; Santos, Andréa Luciana dos; Araújo, Raquel Bighetti; Sakamoto, Márcia Izumi.
This study was carried out to evaluate the effects of different digestible dietary lysine levels on performance and egg quality characteristics, from 25 to 41 weeks of age. One hundred twenty Hy-Line Brown layers were randomly distributed in five treatments with six replications of four birds each, totaling 30 experimental units. Experimental diets were based on corn and soybean meal, were isocaloric and isonutrient, with differences only in lysine levels (0.70, 0.75, 0.80, 0.85, and 0.90%). The study evaluated feed intake, lysine intake, energy consumption, egg production, egg weight, egg mass, and feed conversion. Internal egg quality was evaluated by Haugh unit, the percentages of yolk and albumen percentage, while external quality was measured by...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Digestible amino acids; Egg quality; Performance.
Ano: 2014 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/24331
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Digestible lysine levels for laying hens and their effects on egg quality Animal Sciences
Santos, Tiago Antônio dos; Instituto Federal de Educação Ciência e Tecnologia de Minas Gerais,; Geraldo, Adriano; Instituto Federal de Educação Ciência e Tecnologia de Minas Gerais; Machado, Luiz Carlos; Instituto Federal de Educação Ciência e Tecnologia de Minas Gerais; Pelícia, Kléber; Universidade José do Rosário Vellano; Simão, Sérgio Domingos; Instituto Federal de Educação Ciência e Tecnologia de Minas Gerais; Vieira Filho, Javer Alves; Universidade Estadual Paulista.
Egg quality of semi-heavy laying hens fed on low protein diets (14.0% CP) and on different lysine levels is evaluated, while maintaining the same ratio of digestible amino acids / digestible lysine. Four hundred and twenty commercial strain Isa Brown laying hens, 28 weeks old, were divided into 42 experimental plots. A completely randomized design with six treatments and seven replicates was employed in four production cycles of 28 days each. Treatments comprised Control - 16.92% CP; 0.750% digestible lysine. Treatments 1 to 5, with CP levels 14% and digestible lysine levels 0.600, 0.675, 0.750, 0.825 and 0.900% respectively. Levels of Treatments 1 and 2 (0.546 and 0.640% digestible Met + Cys / 0.600 and 0.675% digestible lysine) provided smaller egg size....
Tipo: Info:eu-repo/semantics/article Palavras-chave: 5.04.03.00-1 ideal protein; Digestible amino acids; Isa Brown; Requirement; Diet.
Ano: 2014 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/21823
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Digestible lysine levels in diets for laying Japanese quails R. Bras. Zootec.
Ribeiro,Cleverson Luís Nascimento; Barreto,Sergio Luiz de Toledo; Reis,Renata de Souza; Muniz,Jorge Cunha Lima; Donzele,Juarez Lopes; Gomes,Paulo Cezar; Vargas Júnior,José Geraldo de; Albino,Luiz Fernando Teixeira.
The objective of this study was to estimate the digestible lysine requirement of Japanese quails in the egg-laying phase. A total of 336 female Japanese quails (Coturnix coturnix japonica) of average initial age of 207 days were distributed in a completely randomized experimental design, composed of 6 treatments (lysine levels) with 7 replicates and 8 birds per experimental unit, with duration of 84 days. Experimental diets were formulated from a basal diet, with corn and soybean meal, with 2.800 kcal ME/kg and 203.70 g/kg crude protein, showing levels of 9.50; 10.00; 10.50; 11.00; 11.50; and 12.00 g/kg digestible lysine; diets remained isoprotein and isocaloric. The following variables were studied: feed intake (FI); lysine intake (LI); egg production per...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coturnix coturnix japonica; Digestible amino acids; Egg production; Performance variables.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000700005
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Digestible Methionine + Cysteine-to-Lysine Ideal Ratio for Meat-Type Quails at Initial Phase Rev. Bras. Ciênc. Avic.
Reis,RS; Viana,GS; Barreto,SLT; Muniz,JCL; Mendonça,MO; Mencalha,R; Ribeiro,CLN; Barbosa,LMR.
ABSTRACT This trial was performed to determine the ideal ratio of digestible methionine + cysteine (Met/Lys) with digestible lysine for meat-type quails from 1 to 14 days of age. A total of six hundred thirty, one-day-old, not sexed meat type quails were randomly assigned to six groups of treatments, each one with seven replicates and fifteen quails per experimental unit. A basal diet, methionine + cysteine-deficient, was graded supplemented with DL-Methionine (0.108; 0.169; 0.230; 0.291; 0.352 and 0.413%) to obtain the treatments, represented by six digestible Met/Lys ratios (0.60; 0.65; 0.70; 0.75; 0.80 and 0.85). Data was analyzed using ANOVA and polynomial regression and broken-line models were used to estimate the digestible Met/Lys ideal ratio,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coturnix coturnix coturnix; Digestible amino acids; Sulphur amino acids.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000500051
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Digestible tryptophan requirements for broilers from 22 to 42 days old R. Bras. Zootec.
Duarte,Karina Ferreira; Junqueira,Otto Mack; Filardi,Rosemeire da Silva; Siqueira,Jefferson Costa de; Puzotti,Maíra Mangili; Garcia,Edivaldo Antônio; Molino,Andrea de Britto; Laurentiz,Antonio Carlos de.
The objective of this experiment was to establish different criteria to evaluate the requirements of digestible tryptophan for broilers from 22 to 42 d of age, using different regression models (quadratic, exponential and Linear Response Plateau) and in case of statistical significance the comparison of means by Duncan test at 5% probability was also adopted. A total of 1,920 Cobb 500 male broilers were distributed in a completely randomized experimental design, with 6 treatments (6 digestible tryptophan levels: 0.1395, 0.1610, 0.1825, 0.2040, 0.2255 and 0.2470%) and 8 replications containing 40 broilers each. Performance and carcass characteristics were evaluated. The level of 0.2255% of digestible tryptophan numerically improves feed conversion, and the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Digestible amino acids; Ideal protein; Performance; Regression analysis.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013001000006
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Digestible valine requirements for broilers from 22 and 42 days old Animal Sciences
Duarte, Karina Ferreira; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Junqueira, Otto Mack; Universidade Estadual Paulista “Júlio de Mesquita Filho” / Universidade Federal de Goiás; Domingues, Carla Heloísa de Faria; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Filardi, Rosemeire da Silva; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Borges, Liliana Longo; Universidade Estadual Paulista “Júlio de Mesquita Filho”; Praes, Maria Fernanda Ferreira Menegucci; Universidade Estadual Paulista “Júlio de Mesquita Filho”.
Current experiment established different criteria to evaluate the requirements of digestible valine for broilers from 22 and 42 days of age, by different regression models (quadratic, exponential and Linear Response Plateau) and, in the case of statistical significance, the comparison of means byDuncantest at 5% probability. A total of 1,920 Cobb 500 male broilers were used and distributed in an entirely randomized experimental design, with 6 treatments (6 digestible valine levels: 0.7192, 0.7729, 0.8265, 0.8802, 0.9339 and 0.9876%) and 8 replications, with 40 broilers each. Data on performance and carcass characteristics were evaluated. The level of 0.8265% digestible valine was considered standard. The inclusion of 0.816, 0.848 and 0.903% of digestible...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Digestible amino acids; Ideal protein; Performance; Regression analyses.
Ano: 2014 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/22761
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Lysine nutritional requirements of broilers reared in clean and dirty environments during the pre-starter and starter phases R. Bras. Zootec.
Toledo,Rodrigo Santana; Rostagno,Horacio Santiago; Albino,Luiz Fernando Teixeira; Dionizio,Marli Arena; Carvalho,Débora Cristine de Oliveira; Nogueira,Eduardo Terra.
A total of 3,760 Ross male broiler chicks were used in two trials, one in the pre-starter (1-11 days) phase and the other in the starter (12-22 days) phase. Birds were distributed in a completely randomized experimental design with a factorial arrangement of 5 digestible lysine levels × 2 environments (clean and dirty environment), with eight replicates per treatment. The following dietary digestible lysine levels used were: 1.06, 1.12, 1.18, 1.24 and 1.30% in the pre-starter phase, and 1.00, 1.06, 1.12, 1.18 and 1.24% in the starter phase. Minimal relation of digestible lysine:digestible methionine + cystine, threonine, tryptophan and arginine (72, 67, 19 and 108%, respectively) were maintained, as well as 2.088 and 2.002% of glycine+serine in the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Digestible amino acids; Nutritional requirements; Performance.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001000021
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Optimal Standardized Ileal Digestible Arginine to Lysine Ratio for Japanese Quails in the Egg-Laying Phase Rev. Bras. Ciênc. Avic.
Tuesta,GMR; Viana,GS; Barreto,SLT; Muniz,JCL; Reis,RS; Mencalha,R; Hannas,MI.
ABSTRACT This study was conducted to determine the optimal standardized ileal digestible arginine to lysine (SID Arg:Lys) ratio for Japanese quails in the egg-laying phase. A total of two hundred forty-five 35-week-old Japanese quails (181 ± 1.30 g initial body weight) were randomly assigned to five treatment groups with seven replicates of seven quails. Graded levels of L-Arginine were added to a basal diet in order to produce five SID Arg:Lys ratios (101, 106, 111, 116 and 121%). Collected data were analyzed as one-way ANOVA and optimal ratio was estimated using polynomial regression model (linear and quadratic) based on performance traits. Statistical differences were considered for p<0.05. Graded SID Arg:Lys ratios did not affect performance traits...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coturnix coturnix japonica; Digestible amino acids; Ideal protein.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200351
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Pearl millet utilization in ccommercial laying hen diets formulated on a total or digestible amino acid basis Rev. Bras. Ciênc. Avic.
Filardi,RS; Junqueira,OM; Casartelli,EM; Laurentiz,AC; Duarte,KF; Assuena,V.
An experiment was carried out to evaluate the effect of replacing corn with pearl millet in commercial layer diets, formulated according to the minimal requirements for total and digestible amino acids. Two hundred and forty Lohmann LSL laying hens with 25 weeks of age were distributed in a completely randomized experimental design according to a 2 x 5 factorial arrangement with 3 replicates of 8 birds. Feed was formulated on two amino acid basis (total or digestible) according to Rostagno et al. (2000) and there were five pearl millet inclusion levels (0%, 25%, 50%, 75%, and 100%). Performance and egg quality were evaluated during five periods of 21 days.At the end of each period, feed intake, egg production, egg weight and feed conversion were evaluated....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Digestible amino acids; Egg quality; Laying hens; Pearl millet; Performance; Total amino acids.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000200006
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Performance and nitrogen balance of laying hens fed increasing levels of digestible lysine and arginine R. Bras. Zootec.
Carvalho,Fabyola Barros de; Stringhini,José Henrique; Matos,Maíra Silva; Jardim Filho,Roberto Moraes; Café,Marcos Barcellos; Leandro,Nadja Susana Mogyca; Andrade,Maria Auxiliadora.
The objective of this experiment was to evaluate the effect of two digestible lysine levels and four digestible arginine levels on laying hens from 24 to 48 weeks of age. Three hundred and twenty Lohmann LSL laying hens were allotted in a completely randomized design in a 2 × 4 factorial arrangement, with two levels of digestible lysine (700 and 900 mg/kg of diet) and four digestible arginine levels (700, 800, 900 and 1000 mg/kg of diet). Results indicated requirement of 884 and 830 mg of digestible arginine/kg of diet, considering an average feed intake of 95 g/hen/day and an average hen weight of 1.5 kg, aiming at lesser feed intake and better nutritional balance of nitrogen, respectively. High digestible lysine levels in the diet require higher...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antagonism; Digestibility; Digestible amino acids; Egg; Production.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012001000007
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Requirements of digestible methionine + cystine for broiler chickens at 1 to 42 days of age R. Bras. Zootec.
Goulart,C.C.; Costa,F.G.P.; Silva,J.H.V.; Souza,J.G.; Rodrigues,V.P.; Oliveira,C.F.S..
The objective of this work was to estimate requirements of digestible methionine + cystine for broiler chickens from 1 to 42 days of age. It was carried out four experiments for each one of the following phases: pre-initial, initial, growing and final. The birds were distributed in a completely randomized experimental design, with six treatments and six replicates. Treatments consisted of a basal feed for each phase, deficient in digestible methionine + cystine and supplemented with DL-methionine to supply six levels of digestible methionine + cystine, resulting in different digestible methionine + cystine:digestible lysine ratios. In the pre-initial phase, levels of digestible methionine + cystine did not influence feed intake and feed conversion....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Digestible amino acids; Ideal protein; Sulfur amino acid.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000400013
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