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Search Results: 1 - 10 of 39732 matches for " Uislei Antonio Dias; "
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Níveis de proteína bruta para leitoas dos 30 aos 60 kg mantidas em ambiente de alta temperatura (31oC)
Orlando Uislei Antonio Dias,Oliveira Rita Flávia Miranda de,Donzele Juarez Lopes,Lopes Darci Clementino
Revista Brasileira de Zootecnia , 2001,
Abstract: O experimento foi conduzido para avaliar níveis de proteína bruta (PB) para leitoas em crescimento, mantidas em ambiente de alta temperatura. A temperatura interna da sala foi mantida em 30,7 ± 0,61°C; a umidade relativa, em 66,4 ± 7,7%; e o índice de temperatura de globo e umidade (ITGU) foi calculado em 81,1 ± 1,36. Foram utilizadas 40 leitoas mesti as, com peso inicial médio de 29,7 ± 1,60 kg, em delineamento de blocos ao acaso com cinco tratamentos (16, 17, 18, 19 e 20% de PB), quatro repeti es e dois animais por unidade experimental. As ra es experimentais isoenergéticas (3400 kcal de ED/kg de ra o) foram formuladas para satisfazer as exigências dos animais, exceto em PB. Ra o e água foram fornecidas à vontade até o final do experimento, quando os animais atingiram peso médio de 60,0 ± 1,93 kg. Os tratamentos n o influenciaram o ganho de peso. Entretanto, a convers o alimentar melhorou de forma quadrática até o nível de 18,26%. Os consumos diários de proteína e lisina aumentaram linearmente em raz o do nível de PB da ra o, porém n o se observou efeito dos tratamentos sobre os consumos de ra o e de energia digestível diários. A taxa de deposi o diária de gordura (TDG) na carca a variou de forma quadrática, reduzindo até o nível de 19,48% de PB, enquanto a de proteína (TDP) aumentou de forma linear. Apesar dos efeitos quadrático e linear dos tratamentos sobre a TDG e a TDP, respectivamente, o modelo "Linear Response Plateau" (LRP) foi o que melhor se ajustou aos dados, estimando-se em 18,38 e 18,12% os níveis de PB, a partir dos quais a TDG e a TDP permaneceram em um plat . Leitoas em crescimento, mantidas em ambiente de alta temperatura, exigem 18,26% de PB na ra o para melhor desempenho e composi o de carca a.
Níveis de Proteína Bruta para Leitoas dos 30 aos 60 kg Mantidas em Ambiente de Conforto Térmico (21oC)
Orlando Uislei Antonio Dias,Oliveira Rita Flávia Miranda de,Donzele Juarez Lopes,Ferreira Aloízio Soares
Revista Brasileira de Zootecnia , 2001,
Abstract: O experimento foi conduzido para avaliar níveis de proteína bruta (PB) para leitoas em crescimento, mantidas em conforto térmico. A temperatura interna da sala manteve-se durante o período experimental em 21,3 ± 0,53°C, a umidade relativa em 70,5 ± 5,11% e o índice de Temperatura de Globo e Umidade (ITGU) calculado no período em 68,7 ± 0,93. Foram utilizadas 40 leitoas mesti as, com peso inicial médio de 29,4 ± 1,42 kg, em delineamento de blocos ao acaso com cinco tratamentos (16, 17, 18, 19 e 20% de PB), quatro repeti es e dois animais por unidade experimental. As ra es experimentais foram isoenergéticas, com 3400 kcal de ED/kg de ra o, e formuladas para satisfazerem às exigências dos animais, exceto em PB. A ra o e a água foram fornecidas à vontade até o final do experimento, quando os animais atingiram peso médio de 60,6 ± 1,76 kg. O nível de PB da ra o influenciou o ganho de peso diário (GPD), que aumentou, e a convers o alimentar (CA), que melhorou linearmente. Apesar do efeito linear dos níveis de PB sobre o GPD e CA, o modelo "Linear Response Plat " (LRP) foi o que melhor se ajustou aos dados, estimando em 18,78 e 19,15%, os níveis de PB a partir do qual o GPD e a CA, permaneceram em um plat . Os consumos diários de proteína e lisina aumentaram linearmente em raz o do nível de PB da ra o, porém n o se observou efeito dos tratamentos sobre os consumos de ra o e de energia digestível diários. Concluiu-se que leitoas em crescimento, mantidas em ambiente de conforto térmico, exigem 19,15% de PB na ra o, correspondendo a um consumo de 343 e 19,08 g/dia de proteína e lisina total, respectivamente.
Exigência de lisina para frangos de corte machos no período de 22 a 42 dias de idade, mantidos em ambiente quente (26oC)
Borges Aurélio Ferreira,Oliveira Rita Flávia Miranda de,Donzele Juarez Lopes,Orlando Uislei Antonio Dias
Revista Brasileira de Zootecnia , 2002,
Abstract:
Níveis de proteína bruta e suplementa??o de aminoácidos em dietas para leitoas mantidas em ambiente de alta temperatura dos 60 aos 100 kg
Orlando, Uislei Antonio Dias;Oliveira, Rita Flávia Miranda de;Donzele, Juarez Lopes;Ferreira, Rony Antonio;Vaz, Roberta Gomes Mar?al Vieira;
Revista Brasileira de Zootecnia , 2007, DOI: 10.1590/S1516-35982007000500012
Abstract: this experiment was conduced to determine the level of cp with amino acid supplementation in diets to gilts under high environmental temperature in finishing phase. thirty-five crossbreed gilts (landrace x large white) with an average initial weight of 60.3 kg were allotted in a randomized experimental design with five diets (17.3, 16, 14.7, 13.4, and 12.1% cp) seven replications and one animal by experimental unity. the experimental diets were supplied ad libitum until the end of the experiment when the animals reached the average weight of 100.3 kg. the average temperature inside the room was kept in 30.6oc and the relative humidity in 71%. the black globe humidity index calculated in the period was 81. not effect was observed for the reduction of cp level of the diet on the studied performance characteristics (feed intake, weight gain and feed gain ratio). the carcass characteristics (carcass length; loin eye area; backfat thickness and yield of carcass, lean meat, fat and ham) also were not influenced by the cp reduction in the diets. the cp levels and supplementation of amino acids in the dieta influenced the relative and absolute weight of intestine. smaller values were observed in animals fed diet with smaller level of cp (12.1%). the reduction of cp level in the diet from 17.3 to 12.1% did not harms the performance of gilts maintained in a high environmental temperature from 60 to 100 kg since the diets are properly supplemented with limiting essential amino acids.
Exigência de Lisina para Pintos de Corte Machos Mantidos em Ambiente com Alta Temperatura
Borges, Aurélio Ferreira;Oliveira, Rita Flávia Miranda de;Donzele, Juarez Lopes;Albino, Luiz Fernando Teixeira;Orlando, Uislei Antonio Dias;Ferreira, Rony Antonio;
Revista Brasileira de Zootecnia , 2002, DOI: 10.1590/S1516-35982002000200014
Abstract: four hundred avian farms male broiler chicks from 1 to 21 days of age, with average weight of 35 ± 0.15 g, were kept under high temperature environment, where the air temperature was maintained in 29.1oc, the relative humidity in 59.7 ± 3.16%, the black globe temperature in 28.9 ± 0.42oc and the black globe humidity index (bghi) in 77.4 ± 0.59. a completely randomized design, with five treatments (1.04; 1.10; 1.16; 1.22 and 1.28% of total dietary lysine level), eight replicates and ten animals per replicate, was used. it was evaluated the effect of total dietary lysine levels on performance, total lysine intake, carcass fat and protein deposition and absolute and relative weights of organs and abdominal fat. ration and water were ad libitum fed. the levels of crude protein, minerals and vitamins in diet met the animals requirements. it was verified a quadratic effect of total dietary lysine levels on weight gain, that increased, and on feed:gain ratio, that improved until the levels of 1.20 and 1.24%, respectively. feed intake did not change, while the total lysine intake increased with the treatments. there was no effect of lysine levels on absolute and relative weights of heart and intestine and relative liver weight. however, absolute liver weight increased quadraticaly up to 1.17% of lysine. considering the protein deposition rate, it was verified quadractic increase until the level of 1.26% of total lysine, while fat deposition rate did not change with lysine level. it was concluded that male broilers from 1 to 21 days of age kept under high temperature (29.1oc) require 1.20% of total lysine, corresponding to 1.02% of digestible lysine in the diet for best performance.
Exigência de lisina para frangos de corte machos no período de 22 a 42 dias de idade, mantidos em ambiente quente (26oC)
Borges, Aurélio Ferreira;Oliveira, Rita Flávia Miranda de;Donzele, Juarez Lopes;Orlando, Uislei Antonio Dias;Ferreira, Rony Antonio;Saraiva, Edilson Paes;
Revista Brasileira de Zootecnia , 2002, DOI: 10.1590/S1516-35982002000800015
Abstract: two hundred and forty male broilers, avian farms with average weight of 541 ± 3.61 g from 22 to 42 days of age, kept under environment of high temperature were used to determining the lysine requirement. a completely randomized design, with five treatments (0.88, 0.94, 1.00, 1.06, and 1.12% of total lysine level), six replicates and eight broilers per replicate, was used. during the experimental period, the air temperature was maintained in 25.6 ± 0.24oc, the relative humidity in 68.4 ± 6.30oc, the black globe temperature in 25.7 ± 0.25oc and the black globe humidity index (bghi) in 74 ± 0.6. feed and water were ad libitum fed to broilers. the dietary lysine levels affected the weight gain, that increased, and the feed:gain ratio, that increased and improved until the levels of 1.05 and 1.03%, respectively. feed intake was not affected by the dietary lysine levels. for the carcass composition, it was observed that the treatments quadraticly affected the protein deposition rate, that increased up to 1.05% of lysine. the absolute weight of carcass, breast without bone, legs, thigh and of abdominal fat, as well as the relative weight of breast with bone and of abdominal fat, were affected by the treatments. it was concluded that male broilers from 22 to 42 days of age kept under 25.6oc of environmental temperature require 1.05% of total lysine in the diet for maximum performance and protein deposition in the carcass.
Níveis de proteína bruta para leitoas dos 30 aos 60 kg mantidas em ambiente de alta temperatura (31oC)
Orlando, Uislei Antonio Dias;Oliveira, Rita Flávia Miranda de;Donzele, Juarez Lopes;Lopes, Darci Clementino;Silva, Francisco Carlos de Oliveira;Generoso, Rafaela Antonia Ramos;
Revista Brasileira de Zootecnia , 2001, DOI: 10.1590/S1516-35982001000600022
Abstract: this experiment was conducted to evaluate levels of crude protein (cp) for growing gilts, under high temperature environment. the internal temperature at room was maintained at 30.7 ± 0.61°c, with relative humidity of 66.4 ± 7.7%, and the calculated black globe humidity index (bghi) in period was of 81.1 ± 1.36. forty crossbred gilts, with average initial weight of 29.7 ± 1.60 kg, were allotted to an experimental design of randomized blocks with five treatments (16, 17, 18, 19 and 20% cp), four replicates and two animals per experimental unit. the experimental diets were isoenergetics (3400 kcal of de/kg) and were formulated to meet the animals requirements, except for cp. diet and water were fed ad libitum to animals, until the end of the experimental period, when the gilts reached the average weight of 60.0 ± 1.93 kg. average daily weight gain was not affected by the treatments. however the feed:gain ratio quadraticly improved up to level of 18.26% cp. the protein and lysine intakes increased linearly with dietary cp levels . however the lysine levels of diet did not influence the diet and digestible energy intakes. fat deposition rate (fdr) in carcass quadractly changed and decreased up to 19.48% of cp in diet, while the protein deposition rate (pdr) linearly increased. despite of quadract and linear effects of treatments, respectively, on fdr and pdr, the "linear response plateau" (lrp) model was the one that better fitted to the data and the levels of protein were estimated in 18.38 and 18.12% , the plato point for fdr and pdr. gilts in the growing phase, under heat stress environment, require 18.26% cp in the diet for better performance and carcass composition.
Efeito da temperatura ambiente sobre o desempenho e as características de carca?a de frangos de corte dos 22 aos 42 dias
Oliveira, Gisele Andrade de;Oliveira, Rita Flávia Miranda de;Donzele, Juarez Lopes;Cecon, Paulo Roberto;Vaz, Roberta Gomes Mar?al Vieira;Orlando, Uislei Antonio Dias;
Revista Brasileira de Zootecnia , 2006, DOI: 10.1590/S1516-35982006000500020
Abstract: this study was conducted to evaluate the effect of environmental temperature on performance and carcass characteristics of male broilers in the period from 22 to 42 days old. three hundred and thirty-six male avian farm broilers, averaging 624 g were allotted to a randomized experimental design, with four treatments (temperatures of 16, 20, 25 and 32oc). the treatment 1 consisted of 12 replicates and the others of 24 replicates, all with four birds per experimental unity. the treatments affected weight gain, feed intake and metabolizable energy intake that quadractly increased until the estimated temperatures of 24.4, 19.1 and 19.1oc, respectively. feed:gain ratio also changed in a quadratic way, increasing until the estimated temperature of 26.3oc. the treatments influenced the carcass and breast yield that changed in a linear way as the temperature increased from 16 to 32oc. thigh yield changed in a quadratic way, increasing until the estimated temperature of 19.4oc. the absolute weights of heart, kidney and gizzard and the relative weights of heart and gizzard were affected by the environmental temperatures and were higher in cold environment (16oc) and smaller in the hot environment (32oc). the relative weight of kidney linearly increased as the temperature increase from 16 to 32oc. however, no treatment effect on absolute and relative weights of proventriculus was observed. it was concluded that the best results of weight gain and absolute weights of carcass, breast and thigh are obtained when the birds are reared on environmental temperatures from 22.3 to 24.7oc. environmental temperatures bellow or above these values affect negatively weight gain and absolute weights of carcass, breast and thigh.
Níveis de lisina digestível em ra??es, em que se manteve ou n?o a rela??o aminoacídica, para frangos de corte de 1 a 21 dias de idade, mantidos em estresse por calor
Valerio, Sandra Roseli;Oliveira, Rita Flávia Miranda de;Donzele, Juarez Lopes;Albino, Luiz Fernando Teixeira;Orlando, Uislei Antonio Dias;Vaz, Roberta Gomes Mar?al Vieira;
Revista Brasileira de Zootecnia , 2003, DOI: 10.1590/S1516-35982003000200015
Abstract: two trials were conducted to evaluate the effects of digestible lysine levels in diets maintaining or not the relationship of amino acids, on performance of broilers from 1 to 21 days, kept under heat stress. a completely randomized experimental design was used in both trials. in the trial 1, the broilers were allotted in five treatments (0.92; 0.98; 1.04; 1.10 and 1.16% of lysine in conventional diets), eight replicates and ten broilers per replicate. in the trial 2, the broilers were allotted in four treatments (1.04; 1.10; 1.16 and 1.22% of lysine in diet maintaining the relationship of amino acids), eight replicates and ten broilers per replicate. in the trial 1, the digestible lysine levels influenced quadraticly the weight gain and the feed intake that increased up to 1.14 and 1.09%, respectively. although feed:gain ratio had changed by linear way, the lrp model adjusted better to the data, estimating in 1.097% the lysine level where occurred a "plateau". there was no effect of treatments on absolute weights of heart, liver and intestines, while the absolute weight of gizzard increased linearly. the absolute weight of carcass increased while the relative weights of heart and liver reduced quadraticly. in the trial 2, the treatments influenced in a crescent linear way the weight gain and the feed:gain ratio while the feed intake was not influenced. the treatments influenced linearly the absolute weight of carcass while the absolute and relative weights of the organs were not influenced. it was concluded that male broilers, in the period from 1 to 21 days of age, kept under heat stress, require at least 1.14 and 1.22% of digestible lysine in conventional diet and in diet maintaining the relationship of amino acid, respectively.
Níveis de Treonina em Ra??es para Leitoas com Alto Potencial Genético para Deposi??o de Carne Magra dos 30 aos 60 kg
Rodrigues, Nair Elizabeth Barreto;Donzele, Juarez Lopes;Oliveira, Rita Flávia Miranda de;Lopes, Darci Clementino;Ferreira, Aloízio Soares;Rodrigues Filho, Moacir;Orlando, Uislei Antonio Dias;
Revista Brasileira de Zootecnia , 2001, DOI: 10.1590/S1516-35982001000800013
Abstract: this experiment was conducted to evaluate the levels of total threonine in diets for gilts from 30 to 60 kg of live weight. forty females, with initial average weight of 29.2 ± 1.4 kg, were used in an experimental design of randomized blocks, with five treatments (0.60; 0.65; 0.70; 0.75 and 0.80% of total threonine), four replications and two animals per experimental unit. the basal diet with 18% of crude protein and 0.928% of total lysine, attended the requirements of gilts according to nrc (1988), except for threonine. the basal diet was supplemented with l-threonine resulting in experimental diets that supplied a calculated digestible threonine:digestible lysine ratio of 62, 68, 74, 80 and 86%, respectively. the experimental diets and water were supplied to gilts ad libtum. at the final of experimental period, when gilts reached the average weight of 59.98 ± 2.9 kg, were collected blood sample to determinate the level of urea in blood serum and one animal per experimental unit was slaughtered to evaluate the protein deposition rate. it was observed effect of threonine levels on weight gain of animals, that linearly increased. feed intake quadratically increased up to 0.66% of threonine in diet. the treatments influenced the feed:gain ratio that reduced until level of 0.70%. the calculated ratio of true digestible threonine:true digestible lysine at level that proposed the best values of feed:gain ratio, corresponded to 75%. it was not observed effect of treatments on level of urea in blood serum. the dietary levels of threonine also influenced the protein deposition rate, that quadractly increased of way until the level of 0.70%. it was concluded that gilts with high genetic potential, from 30 to 60 kg live weight require 0.70% of total threonine and a calculated ratio of true digestible threonine:lysine of 75%.
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