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Search Results: 1 - 10 of 41324 matches for " Fernando Guilherme Perazzo;Rodrigues "
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Nutritional potassium requirement for laying Japanese quails
Costa, Fernando Guilherme Perazzo;Rodrigues, Ladyanne Raia;Goulart, Cláudia de Castro;Oliveira, Cleber Franklin Santos de;Rodrigues, Valéria Pereira;Silva, José Humberto Vilar da;
Revista Brasileira de Zootecnia , 2011, DOI: 10.1590/S1516-35982011001200020
Abstract: the objective of this study was to evaluate the potassium requirement for laying japanese quails. two hundred and forty quails were distributed in a randomized block design, with five treatments and six replicates, with eight birds each. the treatments consisted of a basal diet deficient in potassium (k) (2.50 g/kg), supplemented with potassium carbonate, to replace the inert, to reach levels of 2.50, 3.50, 4.50, 5.50 and 6.50 (g/kg) of k in the diet. there was a quadratic effect of k levels on feed intake, egg production, egg mass and feed conversion per egg mass and per egg dozen, estimating the requirements of 4.26, 4.41, 4.38, 4.43 and 4.48 (g/kg) of k diet, respectively. there was no significant effect on the levels of k in the diet on egg weight, albumen weight, percentage of yolk or shell and yolk color. however, yolk and shell weights reduced and the albumen percentage increased linearly with increasing levels of k in the diet. despite the reduction of shell weight, the increased levels of k did not influence the specific gravity and shell thickness. the use of 4.41 g/kg of potassium is recommended in the diet for laying japanese quails.
Níveis de sódio na ra??o de frangas de 7 a 12 semanas de idade
Ribeiro, Marcelo Luís Gomes;Silva, José Humberto Vilar da;Araújo, José Anchieta de;Rodrigues, Paulo Borges;Costa, Fernando Guilherme Perazzo;Jord?o Filho, José;
Ciência e Agrotecnologia , 2008, DOI: 10.1590/S1413-70542008000400041
Abstract: the experiments were carried out to determine sodium requirements for light (ls) and egg-brown (ebs) pullets from 7 to 12 weeks of age. it was used a completely randomized design according to a 6x2 factorial (sodium levels: 0.04; 0.10; 0.16; 0.21; 0.27 and 0.32% x 2 strains), with five replicates of six pullets per experimental unit. feed intake, water intake, daily weight gain, feed: gain ratio, rectal temperature, and comb size were evaluated, as well as feces dry matter and humidity. in the two experiments, there was no interaction (p>0.05) between sodium levels (sl) and strains on the studied variables. feed intake was not affected by ls, but it was greater in ebs than in ls birds (p <0.05). ls had significant effects on daily weight gain and feed: gain ratio according to the quadratic model, and comb size was greater in ls compared to ebs birds. the increase in dietary sodium levels increased water intake and feces humidity, whereas feces dry matter decreased. rectal temperature was not affected by the treatments. for sl and ebs, it is recommended 0.22% na or a daily intake of 123 and 140 mg of sodium, respectively, from 7 to 12 weeks of age.
Scientific progress in the production of monogastric in the first decade of the twenty-first century
Costa, Fernando Guilherme Perazzo;Silva, José Humberto Vilar da;Lima, Raffaella Castro de;Oliveira, Cleber Franklin Santos de;Rodrigues, Valéria Pereira;Pinheiro, Sarah Gomes;
Revista Brasileira de Zootecnia , 2010, DOI: 10.1590/S1516-35982010001300032
Abstract: significant progress in the area of animal production is due to the development of researches on genetics, environment, health, management and nutrition. the search for better management conditions that benefit animal welfare resulted in changes to the installation. the genetic improvement more productive animals has encouraged the number of searches to reduce the incidence of diseases, mainly of metabolic origin. the incorporation in products with higher bioavailability as industrial amino acid and organic minerals, the inclusion of products modifiers enteric of microflora as probiotic, prebiotic, symbiotic, nucleotides and exogenous enzymes, has benefited the use of nutrients are not well absorbed and often unavailable in the diet. biotechnology latest as nutrition in egg and molecular biology has been used for the benefit of the increase animal productivity.
Exigência de lisina para poedeiras semipesadas durante o pico de postura
Filho, José Jord?o;Silva, José Humberto Vilar da;Silva, Edson Lindolfo da;Ribeiro, Marcelo Luís Gomes;Costa, Fernando Guilherme Perazzo;Rodrigues, Paulo Borges;
Revista Brasileira de Zootecnia , 2006, DOI: 10.1590/S1516-35982006000600021
Abstract: an experiment was carried out as a completely randomized design, with seven treatments, and six replicates of six birds to determine the lysine nutritional requeriments for 252 semi-heavy laying hens. the diets were formulated to be isonitrogenous (17.1%cp) and isoenergy (2,800 kcal/kg-me) and to meet all bird nutrient requeriments, with the exception of lysine, that was supplemented with l-lysine ? hcl (78.4% of lysine) and resulted in the following levels: 0.79, 0.83, 0.87, 0.91, 0.95, 0.99, and 1.03% of total lysine. the performance variables were evaluated from 30 to 46 weeks of age, that correspond to the peak of egg production in commercial hens. quadract effect of treatments on egg production, egg weight and egg dozen:feed ratio was observed. the total lysine requeriments were of 0.92, 0.91, and 0.90, that was correspondent to the estimate of 0.84, 0.83, and 0.82% of digestible lysine, respectively. it is recommended levels of 0.92 or 0.84% or intake of 996 or 910 mg of total and digestible lysine/bird/day, during the peak of egg production.
Nutritional requirements of digestible methionine + cystine for Japanese quails in production phase
Costa, Fernando Guilherme Perazzo;Rodrigues, Valéria Pereira;Goulart, Cláudia de Castro;Vargas Junior, José Geraldo;Silva, José Humberto Vilar da;Souza, Janete Gouveia de;
Revista Brasileira de Zootecnia , 2009, DOI: 10.1590/S1516-35982009001200014
Abstract: this experiment was carried with japanese quails in the egg production phase with the objective of determining the requirements of digestible methionine + cystine (m+c) for higher production and egg quality. a total of 240 japanese quails were distributed in a randomized complete block design. the basal diet was supplemented with different dl-methionine levels, corresponding to digestible methionine + cystine levels of 0.55, 0.61, 0.67, 0.73 and 0.79%. the characteristics analyzed were feed intake (g/quail/day), egg production (%), egg weight (g), egg mass (g/quail/day), feed conversion (dozen eggs/egg mass and kg feed/dozen eggs), egg shell (% and g), albumen (% and g), yolk (% and g) and specific gravity (g/cm3). the digestible m+c level for japanese quails was 0.696% in the diet, corresponding to a daily intake of 186.7 mg/quail.
Exigências de lisina digestível para codornas japonesas na fase de postura
Costa, Fernando Guilherme Perazzo;Rodrigues, Valéria Pereira;Goulart, Cláudia de Castro;Lima Neto, Raul da Cunha;Souza, Janete Gouveia de;Silva, José Humberto Vilar da;
Revista Brasileira de Zootecnia , 2008, DOI: 10.1590/S1516-35982008001200009
Abstract: the objective was to estimate the nutritional requirements of digestible lysine for japanese laying quails. two hundred and forty japanese quails were allotted to a completely randomized block designs, with five diets, with six replications of eight birds each. diets consisted of a basal ration deficient in lysine and supplemented with five levels 0.88, 0.96, 1.04, 1.12 or 1.20%) of digestible lysine. feed consumption, egg production, egg weight and egg mass, feed conversion by egg mass (fcem) and by dozen egg were evaluated. it was also evaluated, albumen weight, yolk weight and shell weight, percentages of albumen, yolk and shell and egg specific gravity. dietary digestible lysine level linearly influenced feed intake, while egg production was affected in a quadratic faction by digestible lysine levels. the other characteristics were not affected by dietary digestible lysine levels. dietary digestible lysine requirement for japanese laying quails was estimated in 1.03%, which correspond to a daily intake of 292 mg of digestible lysine.
Redu??o dos níveis de proteína e suplementa??o aminoacídica em ra??es para codornas européias (Coturnix coturnix coturnix)
Silva, Edson Lindolfo da;Silva, José Humberto Vilar da;Jord?o Filho, José;Ribeiro, Marcelo Luís Gomes;Costa, Fernando Guilherme Perazzo;Rodrigues, Paulo Borges;
Revista Brasileira de Zootecnia , 2006, DOI: 10.1590/S1516-35982006000300027
Abstract: the effects of feeding nine nutrition plans (np) on the performance of 576 quails, allotted to a completely randomized design with nine treatments of four replicates of 16 birds, were evaluated in this trial. the following np were analyzed from 1 to 21 days of age: np1 = 28% of crude protein (cp), 1.5% lysine (l) and 1.1% methionine + cystine (mc) from 1 to 21 days and 24%cp, 1.3%l and 0.9% mc from 22 to 42 days (control); np2 = 25.2% cp, 1.23% l and 0.83% mc from 1 to 21 days and of 21.6% cp, 1.0% l and 0.74% mc from 22 to 42 days; np3 = 22.4% cp, 0.71% mc from 1 to 21 days and 1.2% l and 19.2% cp, 0.64% mc and 0.95% l from 22 to 42 days; np4 = np2+l; np5 = np3+l; np6 = np2+mc; np7 = np3+mc; np8 = np2+l+mc; and np9 = np3+l+mc. the diet supplementation from np4 to np9 with l, mc or l+mc aimed to provide values of l and mc similar to np1. diets (2,900 kcal me/kg ) and water were fed ad libitum in both phases. from 1 to 21 days, decreasing dietary crude protein levels from 28 to 22.4% also reduced intake, body weight, weight gain, but did not affect feed conversion. the dietary supplementation with mc increased bird performance. the recommended level of l (1.5%) in a deficient diet in cp (19.2%) and mc (0.71%) decreased quail growth from 1 to 21 days of age. however, meeting the mc requirements decreased dietary cp levels from 28 to 22.4% and from 24 to 19.2%, respectively, for quails from 1 to 21 and 22 to 42 days of age, independent of the lysine supplementation.
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.
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
Revista Brasileira de Zootecnia , 2001,
Abstract: Foram realizados dois experimentos para determinar a exigência nutricional de lisina total para frangos de corte Ross de ambos os sexos, nos períodos de 1 a 21 e 22 a 40 dias de idade, respectivamente. Foram avaliados o ganho de peso, consumo de ra o, convers o alimentar e avalia o de carca a. Para cada experimento, o delineamento utilizado foi o inteiramente casualizado, em esquema fatorial 2x6, constituídos de dois sexos e seis níveis dietéticos de lisina, com seis repeti es e um total de 1440 aves. As dietas basais com 1,03% de lisina total, 22,00% PB e 3000 kcal EM/kg, no primeiro experimento, e 0,92% de lisina total, 20,00% PB e 3150 kcal EM/kg no segundo experimento, foram suplementadas com seis níveis de lisina pura (0; 0,06; 0,12; 0,18; 0,24 e 0,30%). Considerando-se os dados de ganho de peso e convers o alimentar, as exigências nutricionais estimadas para o experimento de 1 a 21 dias foram 1,303 e 1,249% de lisina total e 1,183 e 1,129% de lisina digestível, para os machos e fêmeas, respectivamente. Para o experimento de 22 a 40 dias, levando em considera o os parametros analisados de desempenho e avalia o de carca a, pode-se estimar uma exigência de 1,164 e 1,143% de lisina total e 1,044 e 1,023% de lisina digestível para machos e fêmeas Ross, respectivamente.
Níveis dietéticos de proteína bruta para frangos de corte de 1 a 21 e 22 a 42 dias de idade
Costa Fernando Guilherme Perazzo,Rostagno Horacio Santiago,Albino Luiz Fernando Teixeira,Gomes Paulo Cezar
Revista Brasileira de Zootecnia , 2001,
Abstract: Foram realizados dois experimentos para determinar o nível ideal de proteína bruta para frangos de corte Ross de ambos os sexos, nas fases inicial (1 a 21) e crescimento (22 a 42 dias de idade). Foram avaliados: o ganho de peso (GP), consumo de ra o (CR), convers o alimentar (CA) e características de carca a. Para cada fase, o delineamento experimental foi em blocos inteiramente casualisados. Na fase inicial, utilizou-se um fatorial 2x6, constituído de dois sexos e seis níveis de proteína bruta (20,00; 20,50; 21,00; 21,50; 22,00 e 22,50%), seis repeti es e um total de 1440 aves. Na fase de crescimento, utilizou-se um fatorial 2x5, constituído de dois sexos e cinco níveis de proteína bruta (17,50; 18,00; 18,50; 19,00 e 19,50%), seis repeti es e um total de 1200 aves. Os níveis de lisina total utilizados foram 1,27% e 1,16%, respectivamente para as fases inicial e de crescimento. Foram mantidas as rela es lisina: metionina+cistina, treonina, triptofano e arginina, levando em considera o o perfil da proteína ideal. Com base nos resultados de desempenho, a exigência de proteína bruta estimada para machos, na fase de 1 a 21 dias foi de 22,42% PB, enquanto que para fêmeas, observou-se efeito linear para GP e CA. Na fase de crescimento, os machos responderam linearmente aos níveis de proteína para CR, CA, rendimento de peito e gordura abdominal, tendo estes resultados melhorados à medida que se aumentava o nível de proteína bruta da ra o. Para as fêmeas, verificou-se efeito quadrático do nível dietético de proteína para GP e efeito linear para CA e gordura abdominal. Os níveis de proteína bruta estimados foram: na fase inicial 22,4 e 22,5% e na fase de crescimento 19,5 e 18,5% de PB, respectivamente, para machos e fêmeas.
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