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Search Results: 1 - 10 of 322764 matches for " Geraldo Roberto Quint?o;Lüdke "
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Inclusion of guava wastes in feed for broiler chickens
Lira, Rosa Cavalcante;Rabello, Carlos B?a-Viagem;Ferreira, Paulo Vanderlei;Lana, Geraldo Roberto Quinto;Lüdke, Jorge Vitor;Dutra Junior, Wilson Moreira;
Revista Brasileira de Zootecnia , 2009, DOI: 10.1590/S1516-35982009001200016
Abstract: the objective of this study was to evaluate the effect of including guava wastes in the feed on the performance and carcass yield of broiler chickens. an experiment was carried out with 300 male cobb strain chicks, in a randomized complete design with five levels of waste and five replications. a reference diet based on corn and soybean meal and four feeds with 3, 6, 9 or 12% guava waste were evaluated. the feed intake, weight gain and feed conversion were assessed weekly; the weight at slaughter and the weight and yield of eviscerated carcass, carcass without feet and head, breast, drumstick, thigh, wing, back, edible viscera and abdominal fat were assessed. the inclusion of guava waste in the feed promotes performance and carcass yield similar to that obtained with the feed based on corn and soybean meal, therefore this agro-industrial by-product can be used at levels of up to 12% in feeds for broiler chickens.
Efeito de programas de restri??o alimentar sobre o desempenho produtivo e econ?mico e a deposi??o de gordura na carca?a de frangos de corte
Lana, Geraldo Roberto Quinto;Rostagno, Horacio Santiago;Donzele, Juarez Lopes;Lana, ?ngela Maria Quinto;
Revista Brasileira de Zootecnia , 1999, DOI: 10.1590/S1516-35981999000600018
Abstract: the objective of this work was to evaluate, at 42 days of age, the productivity and economic performance, and the carcass and special cuts yield, in broiler chickens allotted to different quantitative feeding restriction programs applied in early age. a completely randomized design was used, in a 5 x 2 (feeding restriction program versus sex) factorial arrangement and five replicates with 20 birds per experimental unit. feed intake and weight gain were reduced by the feed restriction programs, but feed: gain was not affected. the carcass and special cuts yield and abdominal content were not affected by feed restriction programs. the economic results showed that feed restriction is indicated mainly when the diet price is high and broiler chicken price is low in the producer market.
Efeito da densidade e de programas de alimenta o sobre o desempenho de frangos de corte
Lana Geraldo Roberto Quinto,Silva Junior René Geraldo Cordeiro,Valerio Sandra Roseli,Lana ?ngela Maria Quinto
Revista Brasileira de Zootecnia , 2001,
Abstract: O objetivo deste experimento foi avaliar o efeito da densidade e de programas de alimenta o sobre o desempenho produtivo e o rendimento de carca a e de cortes nobres em frangos de corte aos 42 dias de idade. O delineamento experimental foi o inteiramente casualizado, num esquema fatorial 3x2 (densidades, programas de alimenta o), com quatro repeti es cada. As densidades foram: 10, 12 e 16 aves/m2. A alimenta o foi constituída de programa 1 (quatro ra es): pré-inicial, inicial, crescimento e final; e programa 2 (cinco ra es): pré-inicial I, pré-inicial II, inicial, crescimento e final. Na fase de 1 a 7 dias houve diferen a significativa (P<0,05) entre densidades para consumo de ra o, ganho de peso e convers o alimentar. Para a fase de 15 a 21 e 22 a 28 dias de idade, os melhores resultados de ganho de peso e convers o alimentar foram obtidos na densidade de 16 aves/m2. Nas fases de 8 a 14, 29 a 35 e 36 a 42 dias de idade e no período total, n o foram observadas diferen as significativas entre os programas de alimenta o e entre densidades em nenhum dos parametros avaliados. Recomenda-se para frangos de corte, machos, de 1 a 42 dias de idade, a densidade de 16 aves/m2, independentemente do programa de alimenta o.
Efeito da temperatura ambiente e da restri??o alimentar sobre o desempenho e a composi??o da carca?a de frangos de corte
Lana, Geraldo Roberto Quinto;Rostagno, Horacio Santiago;Albino, Luiz Fernando Teixeira;Lana, ?ngela Maria Quinto;
Revista Brasileira de Zootecnia , 2000, DOI: 10.1590/S1516-35982000000400024
Abstract: the objective of this experiment was to study the effects of environmental temperature and feeding restriction programs on performance, carcass and noble cuttings yields and fat, water and protein contents of the carcass, and also the liver glycogen content of broiler chickens under different environmental conditions. a completely randomized block experimental design, in a 5 x 2 (feeding program versus sex) factorial arrangement with two replicates within each environmental and 14 birds per experimental plot, was used. at 42 days of age, the temperature and sex negatively affected the intake and weight gain, but the feeding restriction program did not affect them. temperature, feeding restriction programs and sex did not affect the carcass and noble cutting yields. the feeding restriction programs and the temperature did not affect the carcass fat, water and protein contents. as for sex, the females presented the highest fat contents in the carcass. the glycogen liver contents were negatively affected by the feeding restriction programs and by the sex, however were not affected by the temperature.
Efeito da temperatura ambiente e da restri o alimentar sobre o desempenho e a composi o da carca a de frangos de corte
Lana Geraldo Roberto Quinto,Rostagno Horacio Santiago,Albino Luiz Fernando Teixeira,Lana ?ngela Maria Quinto
Revista Brasileira de Zootecnia , 2000,
Abstract: O objetivo deste experimento foi estudar os efeitos da temperatura ambiente e da restri o alimentar sobre o desempenho produtivo, o rendimento das carca as e dos cortes nobres e os teores de gordura, água e proteína das carca as e os teores de glicogênio do fígado de frangos de corte em diferentes condi es ambientais. O delineamento experimental usado foi em blocos casualizados, em esquema fatorial 5 x 2 (programa alimentar e sexo) com duas repeti es dentro de cada ambiente e 14 aves por unidade experimental. Aos 42 dias de idade, o consumo de ra o e o ganho de peso foram influenciados negativamente pela temperatura e pelo sexo, porém n o foram afetados pelo programa de restri o alimentar. Os rendimentos de carca a e de cortes nobres n o foram influenciados pela temperatura, pelos programas de restri o alimentar e pelo sexo. Os programas de restri o alimentar e a temperatura n o influenciaram os teores de gordura, água e proteína da carca a. As fêmeas apresentaram maior teor de gordura nas carca as. Já os teores de glicogênio do fígado foram negativamente influenciados pelos programas de restri o alimentares e pelo sexo, porém n o foram afetados pela temperatura.
Efeito da densidade e de programas de alimenta??o sobre o desempenho de frangos de corte
Lana, Geraldo Roberto Quinto;Silva Junior, René Geraldo Cordeiro;Valerio, Sandra Roseli;Lana, ?ngela Maria Quinto;Cordeiro, Elísia Carmem G. Bastos;
Revista Brasileira de Zootecnia , 2001, DOI: 10.1590/S1516-35982001000500019
Abstract: the objective of this work was to evaluate the effects of density and feeding programs on the productive performance and carcass and prime cuts yield in broiler chickens at 42 days of age. a completely randomized design, in a 3x2 (density x feeding programs) factorial scheme, with three replications, was used. the densities were: 10, 12 and 16 birds/m2. the feeding was composed of program 1 (four diets): pre-initial, initial, growing and finishing and program 2 (five diets): pre-initial i, pre-initial ii, initial, growing and finishing. in the phase from 1 to 7 days there was significant difference among densities for feed intake, weight gain and feed:gain ratio. for the phase from 15 to 21 and 22 to 28 days the better results of weight gain and feed:gain were obtained in the density of 16 aves/m2. no significant differences were observed for the phases from 8 to 14, 29 to 35 and 36 to 42 days and total period of age among the feeding programs and between densities for all evaluated parameters. it is recommended for males broiler chickens, from 1 to 42 days old, the density of 16 aves/m2, independent of the feeding program.
Exigências de metionina + cistina para frangos de corte fêmeas de 1 a 21 e de 22 a 42 dias de idade criados em regi?o de clima tropical
Silva Junior, René Geraldo Cordeiro;Lana, Geraldo Roberto Quinto;Rabello, Carlos B?a-Viagem;Lana, Sandra Roselí Valerio;Barboza, Walter Amaral;
Revista Brasileira de Zootecnia , 2006, DOI: 10.1590/S1516-35982006000200023
Abstract: two trials were conducted to determine the requirement of methionine + cistyne for ross female broilers from 1 to 21 and 22 to 42 days old on tropical climate region. the following parameters were evaluated: feed intake, weight gain, feed: gain ratio, absolute weights and yields of noble cuts (breast, thighs and drumsticks) and abdominal fat. the experiment was analyzed as a complete randomized design with six levels of methionine + cystineand four replicates of 12 birds per replicate, in a total of 288 birds for each experiment. the diets were formulated to meet the bird nutricional requirements, except for methionine + cystine levels. the diets were supplemented with dl-methionine at levels of 0, 0.08, 0.16, 0.24, 0.32, and 0.40% to contain 0.69, 0.77, 0.85, 0.93, 1.01, and 1.09% of methionine + cystine, for the period from 1 to 21 days and 0.61; 0.69; 0.77; 0.85; 0.93 and 1,01% of methionine + cystine, for the period from 22 to 42 days old. quadractic effect of levels of methionine + cistyne on weight gain and feed: gain ratio, from 1 to 21 days old, and linear effect on weight gain, feed: gain ratio, absolute weights of abdominal fat, carcass, breast, thighs, and drumsticks and yields of carcass and abdominal fat, from 22 to 42 days old, were observed. according to the performance data, the nutritional requirements of methionine + cystine for female ross broilers were estimated in 0.96%, for the periods from 1 to 21 and 22 to 42 days old.
Exigências de metionina + cistina para frangos de corte machos de 1 a 21 e de 22 a 42 dias de idade, em clima tropical
Silva Junior, René Geraldo Cordeiro;Lana, Geraldo Roberto Quinto;Rabello, Carlos Boa-Viagem;Barboza, Walter Amaral;Lana, Sandra Roselí Valerio;
Revista Brasileira de Zootecnia , 2005, DOI: 10.1590/S1516-35982005000700028
Abstract: two experiments were conducted to determine the nutritional requirements of total methionine + cystine for ross male broilers from 1 to 21 and 22 to 42 days old on tropical climate. the following parameters were evaluated: feed intake, weight gain, feed:gain ratio and absolute weights and yields of carcass, noble cuts (chest, thighs and drumsticks) and abdominal fat. the experiment was analyzed as a complete randomized design with six levels of methionine + cystine and four replicates of 12 animals, in a total of 288 birds for each experiment. the diets were formulated to meet the bird nutricional requirements, except for methionine + cystine levels. the diets were supplemented with dl-methionine at levels of 0, 0.08, 0.16, 0.24, 0.32, and 0.40%, resulting in experimental diets with 0.69, 0.77, 0.85, 0.93, 1.01 and 1.09% of methionine + cystine, for the period from 1 to 21 daysold and 0.61, 0.69, 0.77, 0.85, 0.93, and 1.01% of methionine + cystine, for the period from 22 to 42 days old. quadratic effects of methionine + cystine levels on weight gain and feed:gain ratio, from 1 to 21 days old, and on feed intake, weight gain, feed:gain ratio, absolute weights of carcass and chest and yields of carcass, thighs and drumsticks, from 22 to 42 days old , were observed. according to the performance data, the nutritional requirements of methionine + cystine for male ross broilers were estimated in 0.96 and 0.89% from 1 to 21 and 22 to 42 days old, respectively.
Productive performance of broiler chickens fed tomato waste
Lira, Rosa Cavalcante;Rabello, Carlos B?a-Viagem;Ludke, Maria do Carmo Mohaupt Marques;Ferreira, Paulo Vanderlei;Lana, Geraldo Roberto Quinto;Lana, Sandra Roselí Valerio;
Revista Brasileira de Zootecnia , 2010, DOI: 10.1590/S1516-35982010000500018
Abstract: aiming to evaluate the effect of tomato waste inclusion on productive performance and characteristics of carcass and main broiler chicken cuts, an experiment was carried out using 300 male cobb chicks, distributed in a complete randomized design, with five rations and five replicates. diets consisted of control ration based on corn and soybean meal and four rations with 5, 10, 15 and 20% of tomato waste. feed intake, weight gain and feed conversion and, at the end of experiment, slaughter weight, gutted carcass without feet and head, breast, drumstick, thigh, wing, back, edible guts and belly fat were evaluated every week, as well as it was the yield. tomato waste increased feed intake in the periods from 1 to 7, 8 to 14 and 29 to 36 days of age and worsened gain weight and feed conversion of broiler chickens up to 29 days of age. regarding carcass weight (g) and weight of the noble parts, breast, drumstick and thighs decreased linearly in function of the use of tomato waste in poultry on pre- initial and initial phase, that is, up to 28 days old, but yield (%) was not affected except for yield of heart and liver. use of tomato waste in ration of broiler chickens during the period from 1 to 28 days may decrease weight gain and worsen food conversion. tomato waste may be used as ration ingredient in ration of broiler chicken in the breeding period from 29 to 42 days of age up to the level of 20% without harming weight gain and feed conversion of poultry.
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 Quinto;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.
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