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Search Results: 1 - 10 of 34455 matches for " Juarez Lopes;Araújo "
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Dietas para leit es em aleitamento e pós-desmame
Ferreira Vanusa Patrícia de Araújo,Ferreira Aloízio Soares,Donzele Juarez Lopes,Albino Luiz Fernando Teixeira
Revista Brasileira de Zootecnia , 2001,
Abstract: Duzentos leit es mesti os (Landrace × Large White) foram distribuídos em delineamento em blocos ao acaso, com quatro tratamentos e cinco repeti es, com o objetivo de avaliar os efeitos de diferentes dietas sobre o desempenho e os pesos relativos e absolutos de fígado e pancreas de leit es durante os períodos de aleitamento e pós-desmame, arra oados dos 14 a 56 dias de idade. Os tratamentos consistiram de quatro dietas, as quais foram fornecidas aos animais dos 14 aos 42 dias de idade, quando ent o foram substituídas por uma dieta simples (ra o de creche). Com base nos resultados, pode-se concluir que dietas contendo fontes de proteína de alta qualidade, como leite em pó integral e farinha de peixe, sem fonte suplementar de alimentos energéticos, como soro de leite, quando fornecidas a leit es dos 14 aos 42 dias de idade, proporcionaram os mesmos resultados de desempenho de leit es desmamados aos 28 dias de idade e recebendo ra es simples à base de milho e farelo de soja.
Dietas para leit?es em aleitamento e pós-desmame
Ferreira, Vanusa Patrícia de Araújo;Ferreira, Aloízio Soares;Donzele, Juarez Lopes;Albino, Luiz Fernando Teixeira;Gomes, Paulo Cezar;Cecon, Paulo Roberto;Teixeira, Alexandre de Oliveira;
Revista Brasileira de Zootecnia , 2001, DOI: 10.1590/S1516-35982001000300021
Abstract: two hundred crossbred piglets (landrace ′ large white), fed in the period from 14 to 56 days of age, were assigned to a randomized block design with four treatments and five replicates, to evaluate the effects of different diets on the piglets performance, relative and absolute weights of liver and pancreas in suckling and post-weaning periods. the treatments consisted of four diets, that were supplied from 14 to 42 days of age, when were replaced by a simple diet (nursing ration). the results allowed to conclude that all diets containing sources of hight protein quality, like integral dried milk and fish meal, withouth supplementary source of energetic foods, like dried whey when supplied pigs from 14 days to 42 days of age, provide the same results for the pigs weaned to the 28 days of age and receiving simple diets with corn and soybean meal.
Exigência de treonina, com base no conceito de proteína ideal, de alevinos de tilápia-do-nilo
Bomfim, Marcos Antonio Delmondes;Lanna, Eduardo Arruda Teixeira;Donzele, Juarez Lopes;Quadros, Moisés;Ribeiro, Felipe Barbosa;Araújo, Wagner Azis Garcia de;
Revista Brasileira de Zootecnia , 2008, DOI: 10.1590/S1516-35982008001200001
Abstract: the effects of digestible threonine levels, based on ideal protein concept in diets with 1.35% of digestible lysine on nile tilapia (oreochromis niloticus) fingerlings performance. four hundred thirty two reverted nile tilapia, thailand strain, with initial weight of 1.64 ± 0.03 g, were allotted to completely randomized design, with six diets and six replications with twelve fishes each. the five diets, isoenergetic isoproteic, consisted of various threonine:digestible lysine ratio (69.0, 74.0, 79.0, 84.0, and 89.0%) and methionine + cystine:digestible lysine ratio of 70.0% and one diet with threonine:digestible lysine of 84.0% and methionine + cystine:digestible lysine of 75.0%. the fish were kept in 36 aquariums of 130 l, equipped with water supply, controlled temperature and individual aeration, and ad libitum fed six times a day for 30 days. performance, body composition, protein and fat depositions and nitrogen retention efficiency of fishes were evaluated. consumption of feed, body protein content and body protein deposition increased in a linear fashion in accordance to threonine:digestible lysine in the diet, however, was not affected by the increase of dietary methionine + cystine:digestible lysine. total or digestible threonine levels that provided the best results of performance of nile tilapia fingerlings were 1.11 and 0.99%, while the levels that promoted better body protein deposition were 1.43 and 1.28%, which correspond to threonine:total lysine ratio of 71.0 and 69.0% and threonine:digestible lysine of 90.0 and 89.0%.
Desempenho de porcas alimentadas durante a gesta??o, do primeiro ao terceiro parto, com ra??es com diferentes níveis de proteína bruta
Lima, Kedson Raul de Souza;Ferreira, Aloízio Soares;Donzele, Juarez Lopes;Manno, Maria Cristina;Araújo, Diogo;Rostagno, Horacio Santiago;Silva, Francisco Carlos Oliveira;
Revista Brasileira de Zootecnia , 2006, DOI: 10.1590/S1516-35982006000700017
Abstract: thirty crossbred sows averaging 118.18±12.2 kg of bw, backfat thickness of 13.82±1.42 mm and 220 days old were assigned to a completely randomized design in a split plot scheme with 10 replicates and parturition orders included in the plots (3 x 3 factorial arrangement) and cp ingestion levels (10.0, 13.5, and 17.0%) in the sub-plots. the effects of dietary cp ingestion levels on female performance in three complete successive reproductive cycles were evaluated during the pregnancy. sow weight gain in the pregnancy was affected only by dietary protein levels in the gestation. no significant effect of both dietary protein level and parturition order on bt gain during the pregnancy and the loss during the lactation was observed. neither treatments nor parity orders affected energy efficiency. average litter weight at birth, average litter weight at weaning, number of total piglets born (ntpb) and born alive (ba) and number of weaned pigs were affected by parity order. litter performance for daily average weight gain (dawg) of piglet did not vary among the treatments. no treatment effect on the relative weight (%) was observed. feed intake (fi) during the lactation and weaning-mating interval (wmi) were affected by the treatments, and fi was affected only by parity order. the 17% cp level resulted in better body tissue gain during the pregnancy and lower wmi and the 10% cp level the highest feed intake, and that was independent of parity order. the parity order affected ntpb and ba, litter dawg and wmi, that were greater in the third parity.
Níveis de Proteína Bruta da Ra??o para Marr?s em Gesta??o
Lima, Kedson Raul de Souza;Ferreira, Aloízio Soares;Donzele, Juarez Lopes;Oliveira, Rita Flávia Miranda de;Rostagno, Horacio Santiago;Araújo, Anilce Bretas;Manno, Maria Cristina;
Revista Brasileira de Zootecnia , 2002, DOI: 10.1590/S1516-35982002000100010
Abstract: fifty crossbreed gilts (landrace, large white and pietrain) with 136.34±16.05 and 220 days of average weight and age, respectively, were used to evaluate diets with different crude protein levels, at the gestation period. a complete randomized blocks design, with five treatments, ten replicates and one animal per experimental unit, was used. the treatments corresponded to the diets with 10.0, 11.5, 13.0, 14.5 and 16.0% of crude protein. the weight gains of the gilts at the 90 days of the gestation period and the individual and total weight of the pigs and litter linearly increased in function of the crescent crude protein level in the diets. there was quadratic effect of the crude protein levels in the diets on the gilts dry matter consumption in the subsequent lactation period. this may be a consequence response of the crude protein level in the diets fed to the gilts at the gestation period. the highest calculated dry matter consumption was at 12.96% of crude protein. no effect of the treatments on the number of weaned pigs was observed, but it increased up to the level of 13.33% of crude protein. a linear decreasing effect was observed on the relative weight of the gilts at the weaning time of the pigs also in function of the crescent crude protein levels in the diets at the gestation period. the best crude protein level in the diets at the gestation period for gilts weighting 136,34±16.05 and with 220 days of age was 13.31% crude protein, corresponding to a dry matter consumption of 240 g of protein/day or 0.67% of lysine (12.06 g/day).
Efeito de dietas simples e complexas sobre a morfo-fisiologia gastrintestinal de leit?es até 35 dias de idade
Teixeira, Alexandre de Oliveira;Lopes, Darci Clementino;Ferreira, Aloízio Soares;Donzele, Juarez Lopes;Costa, Izabel Regina S.;Oliveira, Rita Flávia Miranda de;Ferreira, Vanusa Patrícia de Araújo;Souza, André Viana C. de;
Revista Brasileira de Zootecnia , 2003, DOI: 10.1590/S1516-35982003000400019
Abstract: an experiment was conducted with objective to evaluate the effect of the simple and complex diets on the morpho-fisiologycal gastrointestinal of young pigs, on their pre nursery (7th to 21st day) and nursery phases (21st to 35nd of age). ninety six crossbreed young pigs (male and females) were allotted to a randomized block design with four treatments, six replications and four young pigs for each experimental unit. it were used diets: two simple; a with 16 and the other with 19% the protein (cp) and two complex; a to the base corn, fish meal, dried milk, corn gluten without the use of soybean meal (csfs) and the other to the base corn, fish meal, dried milk, soybean meal, without the use of corn gluten (ccfs), both with 19% the cp. the pigs were slaughtered at 14, 21, 28 and 35 days of age. there was reduction of liver absolute and relative weights and of pancreas relative weights, by using csfs diet. ph of the stomach and intestine contents was not influenced by the diet . the animals fed simple diet with 16% of cp and complex csfs showed larger crypt depth (cd) at 21 and 35 days of age, respectively, but did not show effect on the villous height (vh) and villous:crypt relation (vcr). cd it increased linearly, while vh and rvc decreased quadraticly until 27th and 30th days of age, respectively. the simple or complex diet, concerning quality and quantity of ingredients, affected the crypts depth of the small intestine and the auxiliary organs weight of the digestion, but did not affect the stomachal ph and intestine contents of pigs weaned at 21 days of age.
Redu??o do nível de proteína bruta e suplementa??o de aminoácidos em ra??es para suínos machos castrados mantidos em ambiente termoneutro dos 30 aos 60 kg
Ferreira, Rony Antonio;Oliveira, Rita Flávia Miranda de;Donzele, Juarez Lopes;Araújo, Claudio Vieira de;Silva, Francisco Carlos de Oliveira;Fontes, Dalton de Oliveira;Saraiva, Edilson Paes;
Revista Brasileira de Zootecnia , 2005, DOI: 10.1590/S1516-35982005000200024
Abstract: an study was conducted to evaluate the influence of reduction of crude protein (cp) levels and amino acid supplementation in diets on the performance of castrated swines (landracex large white) maintained in a termoneutral environment. fifty crossbreed piglets (average initial body weight of 30.2 kg) were allotted to a completely randomized experimental design with five treatments (17, 16, 15, 14 and 13% cp) and five replications and two animals per experimental unit. experimental diets and water were fed ad libitum up to the end of the experiment, when the animals reached the average weight of 60.2 kg. temperature in the room was kept at 22.0oc and the relative humidity at 82.8%, corresponding to a black globe-humidity index (bghi) of 69.2. reduction of dietary cp level affected body weight gain (wg) of the animals, those animals fed diet with 17% cp showed smaller wg than the animals fed diet with 15 and 14% cp. feed intake (fi) and feed:gain ratio were not affected by treatments. reduction of cp level increased the protein and fat deposition in the carcass and reduced the total nitrogen excretion. the level of crude protein of diet to castrated swines from 30 to 60 kg maintained in a termoneutral environment could be reduced from 17 to 13% with no effect on performance, since diets are supplemented with essential limitant amino acids.
Níveis de cromo organico na dieta de codornas japonesas mantidas em estresse por calor na fase de postura
Araújo, Marcelle Santana de;Barreto, Sergio Luiz de Toledo;Donzele, Juarez Lopes;Oliveira, Rita Flávia Miranda de;Umigi, Regina Tie;Oliveira, Will Pereira de;Balbino, Eric Márcio;Assis, Ana Paula de;Maia, Gustavo Vaz Corrêa;
Revista Brasileira de Zootecnia , 2007, DOI: 10.1590/S1516-35982007000300010
Abstract: the objective was to evaluate the effects of the addition of organic chromium in the diet of japanese quails in the initial fase of laying, under heat stress. six hundred quails averaging 63 days old and initial body weight of 158.60 g on high temperature environment (32oc) were used. diets were based on corn and soybean meal, and supplemented with five levels of chromium (0, 500, 1,000, 1,500, and 2,000 ppb), from chromium-methionine, in replacement with innert material. the experimental design was completely randomized, with 12 experimental units per treatment and ten birds in each experimental unit. the least significant level for cr inclusion in the diet was obtained using the willians test, at 5% significance level, on the following variables: egg production (total egg production, egg production by lodged bird and commercial egg production by lodged bird, egg weight), feed intake, feed conversion (by kg of egg and by dozen of egg) and egg mass. the level of 500 ppb increased the egg commercial production by lodged bird. feed intake increased at 2000 ppb cr. other variables were not influenced by the different supplemental cr levels. the results allow to conclude that 500 ppb of supplemental chromium, from chromium-methionine, was able to improve the egg commercial production of laying japanese quail under heat stress.
Redu??o da proteína bruta da ra??o e suplementa??o de aminoácidos para suínos machos castrados dos 15 aos 30 kg mantidos em ambiente de alta temperatura
Ferreira, Rony Antonio;Oliveira, Rita Flávia Miranda de;Donzele, Juarez Lopes;Araújo, Cláudio Vieira de;Silva, Francisco Carlos de Oliveira;Vaz, Roberta Gomes Mar?al Vieira;Rezende, Wilkson Oliveira;
Revista Brasileira de Zootecnia , 2006, DOI: 10.1590/S1516-35982006000400016
Abstract: a trial was conducted to evaluate the effect of reduced cp, amino acid-supplemented diets on performance of castrated males swines on high environmental temperature (32oc). a total of sixty crossbred piglets (landrace x large white) averaging initial weight of 15.2 kg was allotted to completely randomized experimental design with five treatments (18, 17, 16, 15, and 14% of cp), six replications and two animals per experimental unit. the experimental diets were fed to swine ad libitum until the end of the experiment, when the animals averaged 29.9 kg. the average temperature in the room was maintained in 32.3oc, with relative humidity of 75.9%, corresponding a black globe-humidity index (bghi) of 82.6. the reduced cp level, amino acid-supplemented-based diets did not affect the evaluated parameters (feed intake, weight gain and feed:gain ratio). no treatment effect on digestible lysine and energy intakes was observed. gradual reduction on daily nitrogen intake was observed. decreasing dietary cp levels affected only fat deposition rate. the highest values of relative and absolute weights of liver and stomach and the relative weight of kidneys were observed in the animals fed diets with the highest dietary cp level. it was concluded that the dietary cp level can be reduced from 18 to 14% for castrated piglets from 15 to 30 kg on high environmental temperature, with no effect on performance, since diets are supplemented with the essential amino acids.
New and old wars: organized violence in a global era
Liana Araújo Lopes
Contexto Internacional , 2002, DOI: 10.1590/s0102-85292002000200006
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